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Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes 认领 引用 被引量：1
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作者 Xuan Yang Jiuji Guo +2 位作者 Zhaowu Zhu Hui Zhang Tao Qi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第4期830-837,共8页
Titanium suboxide is an excellent electrode material for many oxidization reactions.In this article,the electrodes of pure Ti_4O_7,doped Ti_4O_7and the mixed-crystal of Ti_4O_7and Ti_5O_9were prepared to evaluate thei... Titanium suboxide is an excellent electrode material for many oxidization reactions.In this article,the electrodes of pure Ti_4O_7,doped Ti_4O_7and the mixed-crystal of Ti_4O_7and Ti_5O_9were prepared to evaluate their activities and doping effects in the electro-degradation of phenol.It was revealed by the HPLC analysis results that the degradation intermediates and routes were significantly affected by the doping element.On the pure Ti_4O_7anode,a series of classic intermediates were obtained from benzoquinone and hydroquinone to various carboxylic acids.These intermediates were degraded gradually to the final organic intermediate of oxalate in all experiments.At last,oxalate was oxidized to CO_2and H_2O.Distinctively,the Y-doped Ti_4O_7 anode directly broke phenol toα-ketoglutaric acid without the intermediates of benzoquinone and hydroquinone.The strong oxidization ability of the Y-doped Ti_4O_7 anode might be responsible for the highest COD removal ratio.In contrast,the Ga-doped Ti_4O_7 anode showed the worst degradation activity in this article.Three intermediates of benzoquinone,hydroquinone and maleic acid were found during the degradation.Benefiting from the weak ability,oxalate was efficiently accumulated with a very high yield of 74.6%.The results demonstrated promising applications from electrochemical preparation to wastewater degradation by adjusting the doping reagent of Ti_4O_7 electrodes. 展开更多
关键词 Titanium suboxide Electro-oxidation Doping effect Phenol Oxalate
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Sol-gel synthesis of nanometer silicon/silicon suboxide/carbon anode material 认领 引用
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作者 QIN Tong WANG Zheng LI Zhengzheng 《Baosteel Technical Research》 CAS 2024年第2期12-18,共7页
A stacked Si/SiOx/C composite anode material with carbon-coated structure was prepared by sol-gel method combined with carbothermal reduction using organic silicon.The results of X-ray diffractometry, scanning elec... A stacked Si/SiOx/C composite anode material with carbon-coated structure was prepared by sol-gel method combined with carbothermal reduction using organic silicon.The results of X-ray diffractometry, scanning electron microscopy, and elemental analysis show that the Si/SiOx/C material is a secondary particle with a porous micronanostructure, and the presence of nanometer silicon does not affect the carbothermal reduction and carbon coating.Electrochemical test results indicate that the specific capacity and first coulombic efficiency of SiOx/C composite with nanometer silicon can be increased to 1 946.05 mAh/g and 76.49%,respectively.The reversible specific capacity of Si/SiOx/C material blended with graphite is 749.69 mAh/g after 100 cycles at a current density of 0.1 C,and the capacity retention rate is up to 89.03%.Therefore, the composite has excellent electrochemical cycle stability. 展开更多
关键词 sol-gel method nanometer silicon silicon suboxide anode material
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Systematic understanding of titanium suboxides and their energy applications 认领 引用
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作者 Hongji Yu Xuzhou Sun +4 位作者 Zhuoran Lv Yuge Cao Wujie Dong Yuqiang Fang Fuqiang Huang 《Science Bulletin》 SCIE EI CAS CSCD 2025年第18期3042-3057,共16页
Titanium suboxides,denoted as TinOm(O<m<2),represent a typical class of non-stoichiometric compounds characterized by a wide range of structures and physicochemical properties dependent on their variable t... Titanium suboxides,denoted as TinOm(O<m<2),represent a typical class of non-stoichiometric compounds characterized by a wide range of structures and physicochemical properties dependent on their variable titanium-to-oxygen ratios.This review systematically summarizes the crystallographic features,electronic structures,physical properties,and energy-related applications of TinOm.As oxygen atoms are progressively removed from TiO2,the emergence of Ti-Ti metallic bonds transforms the compound from a semiconductor to a metallic conductor.The diverse configurations of Ti 3d orbital electrons impart unique physical properties to TinOm,including superconductivity,charge density waves,and ferromagnetism.This article provides an in-depth analysis of how various synthesis methods influence the crystal structures of the obtained TinOm.Due to their distinct energy band structures and physical characteristics,titanium suboxides demonstrate outstanding performance in applications such as electrochemical energy storage,thermoelectric conversion,electronic devices,catalysis,and microwave absorption.This review not only comprehensively presents the fundamental structures and properties of titanium suboxides,but also offers valuable insights to guide future research in this field. 展开更多
关键词 Titanium suboxides Crystal structure Electronic structure Physical property Energy applications
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A Scalable and Effective Strategy for Boosting the Initial Coulombic Efficiency of Silicon Suboxide Anode 认领 引用 被引量：2
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作者 Zhao Yang Yaozong Yang +4 位作者 Zhaolin Li Jie Wang Ying Luo Jingying Xie Hailei Zhao 《Energy Material Advances》 EI CAS CSCD 2024年第1期374-383,共10页
Silicon suboxide(SiOx)is one of the most attractive candidates for anode materials for high-energy-density lithium-ion batteries due to its high specific capacity and its relatively lower volume expansion than that... Silicon suboxide(SiOx)is one of the most attractive candidates for anode materials for high-energy-density lithium-ion batteries due to its high specific capacity and its relatively lower volume expansion than that of Si.However,its low initial Coulombic efficiency(ICE)seriously affects its practical applications.In this work,we demonstrate a scalable and effective strategy to enable a high ICE of the SiOx electrode through a MnO-assisted disproportionation reaction.The obtained Mn2SiO4-Si-SiOx@C(MSS@C)material shows a reduced lithium irreversible consumption in the first cycle.The Mn2SiO4 phase can store lithium through a conversion reaction with a smaller volume change(33%)than SiOx,which helps to maintain the structural stability of MSS@C during cycling.Meanwhile,the metallic Mn nanoparticles generated from Mn2SiO4 during the lithiation process facilitate electron conduction,thus improving the electrode reaction kinetics.Owing to the synergetic effects,the MSS@C material exhibits a higher ICE(79.51%)compared to 60.91%of pure SiOx,and a superior cyclic performance(832 mAh g−1 at 0.5 A g−1 after 350 cycles with a capacity retention of 90.4%).This work offers a new approach to increase the ICE while improving the electrode reaction kinetics and cycling stability of SiOx-based materials. 展开更多
关键词 coulombic efficiency ice seriously effective strategy lithium ion batteries silicon suboxide sio x anode materials anode material initial coulombic efficiency scalable strategy
Image lithography in telluride suboxide thin film through controlling “virtual” bandgap 认领 引用 被引量：2
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作者 Tao Wei Jingsong Wei +1 位作者 Kui Zhang Long Zhang 《Photonics Research》 SCIE EI CAS 2017年第1期22-26,共5页
In this work, TeO0.7thin films were prepared by the reactive magnetron-controlling sputtering method. Complex gray-scale patterns were successfully fabricated on TeO0.7thin films through the laser direct writing... In this work, TeO0.7thin films were prepared by the reactive magnetron-controlling sputtering method. Complex gray-scale patterns were successfully fabricated on TeO0.7thin films through the laser direct writing method.The structural origin of TeO0.7thin film was investigated for gray-scale pattern formation. It is found that multiple gray-scale levels are dependent on the "virtual" bandgap energy of TeO0.7thin films. The bandgap energy changes lead to refractive index and reflectivity difference. Thus, gray-scale tones can be formed. By accurately controlling laser energy, various "virtual" bandgaps can be generated in TeO0.7thin films, and colorful gray-scale levels can be formed. Experimental results indicate that TeO0.7thin film can be used as microano image writing material. 展开更多
关键词 Te Image lithography in telluride suboxide thin film through controlling bandgap virtual
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Bridging chemical relithiation and alloying reaction to engineer a Li-Al-F interface for enhanced lithium storage kinetics 认领 引用
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作者 Haihang Huang Yaoxiang Shan +5 位作者 Bingkun Zang Longqing Zhang Quanqiang Yuan Xucai Yin Zhangfa Tong Yang Ren 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第10期541-549,共9页
This study innovatively proposes a“chemical prelithiation/alloying-induced interfacial reconstruction”synergistic strategy that fundamentally improves the performance of Si-based anodes.Through a precisely controlle... This study innovatively proposes a“chemical prelithiation/alloying-induced interfacial reconstruction”synergistic strategy that fundamentally improves the performance of Si-based anodes.Through a precisely controlled process leveraging orbital energetics and Lewis acid catalysis,we successfully engineer a Li-Al-F phase on the interface of SiO(denoted as Pre-SiO-Al)anodes via sequential chemical prelithiation and AlF3-driven interfacial alloying reactions.This novel approach breaks through the ion transport limitations of traditional LiF-dominated solid electrolyte interphase(SEI)layers,while concurrently addressing the critical challenges of low initial Coulombic efficiency(ICE)and severe volume expansion.Mechanism studies reveal that the Li-Al-F offers an ultralow Li+diffusion barrier(0.1 eV),significantly enhancing interfacial ion transport kinetics.Meanwhile,the high mechanical strength and dynamic stress dissipation capability of LiAl-F effectively suppress SEI fracture caused by volume expansion,enabling coordinated deformation compatibility between the electrode and the interfacial layer.The Pre-SiO-Al anode maintains a high capacity of 682.6 m A h g-1after 2000 cycles at 1.0 A g-1with near 100% capacity retention.When paired with LiFePO4cathode,the Pre-SiO-Al||LFP full cell achieves impressive rate capability and cycling stability(93.8% capacity retention after 150 cycles at 0.5 C),demonstrating strong commercialization potential. 展开更多
关键词 Lithium-ion batteries Silicon suboxide Chemical prelithiaton AlF3 SEI film
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Porous cathode enables continuous flow anodic oxidation for water purification:Performance and mechanisms 认领 引用
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作者 Runsheng Xu Haotian Wu +3 位作者 Daoyuan Zu Kui Yang Xiangtong Kong Jinxing Ma 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第8期655-660,共6页
Flow anodic oxidation system has demonstrated to be a promising and environmental benign water treatment technology because of its advantages of high contaminant removal efficiency and low energy consumption.However,t... Flow anodic oxidation system has demonstrated to be a promising and environmental benign water treatment technology because of its advantages of high contaminant removal efficiency and low energy consumption.However,traditional setup needs an external unit for flow anode material separation and recovery,which inevitably increases the capital cost and hinders its continuous operation.Herein,a specific porous cathode is introduced to achieve continuous water purification with high contaminant removal in a flow anodic oxidation system.The efuent concentration of carbamazepine(CBZ),a common and model contaminant widely detected in natural water environment,was reduced by 99%.The linear sweep voltammetry(LSV)and quenching tests demonstrated that HO·was the dominant reactive species.While the removal of contaminants was inhibited in practical surface water,largely related to the quenching by dissolved organic matter and bicarbonate,the flow anodic oxidation process was competent in alleviating the ecotoxicity following oxidation.Our study constructs a modular device for cost-effective continuous water purification and provides insight into the mechanisms of flow andic oxidation. 展开更多
关键词 Water purification Flow anodic oxidation Porous cathode Magneli phase titanium suboxide Carbamazepine
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Sandwich-like structure C/SiOx@graphene anode material with high electrochemical performance for lithium ion batteries 认领 引用 被引量：5
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作者 Zhaolin Li Yaozong Yang +2 位作者 Jie Wang Zhao Yang Hailei Zhao 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2022年第11期1947-1953,共7页
Silicon suboxide(SiOx,0<x<2)is recognized as one of the next-generation anode materials for high-energy-density lithium ion batteries(LIBs)due to its high theoretical specific capacity and abundant resource.H... Silicon suboxide(SiOx,0<x<2)is recognized as one of the next-generation anode materials for high-energy-density lithium ion batteries(LIBs)due to its high theoretical specific capacity and abundant resource.However,the severe mechanical instability arising from large volume variation upon charge/discharge cycles frustrates its electrochemical performance.Here we propose a well-designed sandwich-like structure with sandwiched SiOx nanoparticles between graphene sheets and amorphous carbon-coating layer so as to improve the structural stability of SiOx anode materials during cycling.Graphene sheets and carbon layer together construct a three-dimensional conductive network around SiOx particles,which not only improves the electrode reactions kinetics,but also homogenizes local current density and thus volume variation on SiOx surface.Moreover,Si-O-C bonds between SiOx and graphene endow the strong particle adhesion on graphene sheets,which prevents SiOx peeling from graphene sheets.Owing to the synergetic effects of the structural advantages,the C/SiOx@graphene material exhib-its an excellent cyclic performance such as 890 mAh/g at 0.1 C rate and 73.7%capacity retention after 100 cycles.In addition,it also delivers superior rate capability with a capacity recovery of 886 mAh/g(93.7%recovery rate)after 35 cycles of ascending steps at current range of 0.1-5 C and finally back to 0.1 C.This study provides a novel strategy to improve the structural stability of high-capacity anode materials for lithium/sodium ion batteries. 展开更多
关键词 sandwich-like structure silicon suboxide electrochemical performance anode lithium-ion battery
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Mg-doped,carbon-coated,and prelithiated SiOx as anode materials with improved initial Coulombic efficiency for lithium-ion batteries 认领 引用 被引量：1
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作者 Bin Liu Jie Liu +1 位作者 Cheng Zhong Wenbin Hu 《Carbon Energy》 SCIE EI CAS CSCD 2024年第3期204-214,共11页
Silicon suboxide(SiOx,x≈1)is promising in serving as an anode material for lithium-ion batteries with high capacity,but it has a low initial Coulombic efficiency(ICE)due to the irreversible formation of lithium si... Silicon suboxide(SiOx,x≈1)is promising in serving as an anode material for lithium-ion batteries with high capacity,but it has a low initial Coulombic efficiency(ICE)due to the irreversible formation of lithium silicates during the first cycle.In this work,we modify SiOx by solid-phase Mg doping reaction using low-cost Mg powder as a reducing agent.We show that Mg reduces SiO2 in SiOx to Si and forms MgSiO3 or Mg2SiO4.The MgSiO3 or Mg2SiO4 are mainly distributed on the surface of SiOx,which suppresses the irreversible lithium-ion loss and enhances the ICE of SiOx.However,the formation of MgSiO3 or Mg2SiO4 also sacrifices the capacity of SiOx.Therefore,by controlling the reaction process between Mg and SiOx,we can tune the phase composition,proportion,and morphology of the Mg-doped SiOx and manipulate the performance.We obtain samples with a capacity of 1226 mAh g–1 and an ICE of 84.12%,which show significant improvement over carbon-coated SiOx without Mg doping.By the synergistical modification of both Mg doping and prelithiation,the capacity of SiOx is further increased to 1477 mAh g–1 with a minimal compromise in the ICE(83.77%). 展开更多
关键词 initial Coulombic efficiency lithium-ion batteries magnesium doping prelithiation silicon suboxide
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A review on the critical challenges and progress of SiOx-based anodes for lithium-ion batteries 认领 引用 被引量：9
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作者 Nana Yao Yu Zhang +4 位作者 Xianhui Rao Zhao Yang Kun Zheng KonradŚwierczek Hailei Zhao 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2022年第4期876-895,共20页
With the advantages of abundant resources,high specific capacity,and relatively stable cycling performance,silicon suboxides(SiOx ,x<2)have been recently suggested as promising anodes for next-generation lithium... With the advantages of abundant resources,high specific capacity,and relatively stable cycling performance,silicon suboxides(SiOx ,x<2)have been recently suggested as promising anodes for next-generation lithium-ion batteries(LIBs).SiOx exhibits superior storage capability because of the presence of silicon and smaller volume change upon charge/discharge than Si owing to the buffering effect of the initial lithiation products of inert lithium oxide and lithium silicates,enabling a stable cycle life of electrodes.However,significant improvements such as overcoming issues related to volume changes in cycling and initial irreversible capacity loss and enhancing the ionic and electronic charge transport in poorly conducting SiOx electrodes,are still needed to achieve the satisfactory performance required for commercial applications.This review summarizes recent progress on the cycling performance and initial coulombic efficiency of SiOx .Advances in the design of particle morphology and composite composition,prelithiation and prereduction methods,and usage of electrolyte additives and optimized electrode binders are discussed.Perspectives on the promising research directions that might lead to further improvement of the electrochemical properties of SiOx -based anodes are noted.This paper can serve as a basis for the research and development of high-energy-density LIBs. 展开更多
关键词 silicon suboxides preparation structural optimization anode lithium-ion batteries
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Tradeoffbetween Narrowing Optical Band Gap and Enhancing Electrical Conductivity of the Metal Nanoparticles-Modified Titanium Oxide Films 认领 引用
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作者 Aung Chan Thar Thaung Hlaing Win +1 位作者 Nyein Wint Lwin Than Zaw Oo 《Journal of Physical Science and Application》 2015年第3期220-225,共6页
The n-type semiconducting titanium oxide thin films are well-known as electron transporting interlayer in photovoltaic cells.The favorable characteristics of interlayers in photovoltaics are high optical transmittance... The n-type semiconducting titanium oxide thin films are well-known as electron transporting interlayer in photovoltaic cells.The favorable characteristics of interlayers in photovoltaics are high optical transmittance(T%),wide band gap energy(Eg)and high electrical conductivity(σ).Modifying titanium oxide films with metal nanoparticles would increase electrical conductivity but reduce optical band gap energy.We developed the sol-gel derived titanium suboxide(TiOx)films modified with silver(Ag)or gold(Au)or copper(Cu)nanoparticles(NPs).This study explores a tradeoff between narrowing optical band gap and enhancing electrical conductivity of nanostructured TiOx films by controlling the Au-or Ag-or Cu-NPs loading concentrations(mol%)in titania.The Au-and Cu-NPs loading concentration of 4 mol%should meet a tradeoff which yields the higher T%,wider Eg and higher compared to those of pure TiOx films.In addition,since the pure Cu is not thermodynamically stable in ambience as compared to Au and Ag,the stability of as-obtained colloidal CuNPs is also examined.A careful examination of the time evolution of surface plasmon resonance(SPR)bands of CuNPs indicates that their stability is only up to 4 h. 展开更多
关键词 Titanium suboxide metal nanoparticles electrical conductivity band gap energy.
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High-precision glass-on-glass printing via laser-induced forward transfer of solid state SiOx:fabrication technique and optical applications 认领 引用
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作者 Nastaran Bakhtiari Jürgen Ihlemann 《Light: Advanced Manufacturing》 CSCD 2026年第1期83-96,共14页
Additive manufacturing of glass with submicron resolution remains challenging due to the intrinsic hardness,brittleness,and weak light absorption of most glasses.Here,we demonstrate the laser-induced forward transfer(... Additive manufacturing of glass with submicron resolution remains challenging due to the intrinsic hardness,brittleness,and weak light absorption of most glasses.Here,we demonstrate the laser-induced forward transfer(LIFT)of substoichiometric solid-state silicon oxide(SiOx,x<2)films for precise glass-on-glass printing.Using single-pulse 248 nm UV excimer laser irradiation and a custom-designed compression system,we achieve submicron donor−receiver gaps,enabling clean and crack-free transfer onto transparent substrates such as fused silica and borosilicate glass(BK7).In particular,the direct printing of SiOxonto fused silica substrates presents considerable challenges due to their high surface hardness and sensitivity to thermal stress.These factors often lead to poor adhesion and fragmentation of the transferred layers in conventional LIFT setups.We overcome these issues by implementing near-zero gap conditions and optimizing the laser fluence relative to the film thickness,enabling stable,residue-free transfer of SiOxonto fused silica.Systematic analysis reveals a strong dependence of transfer quality on both layer thickness and laser fluence,identifying a critical minimum thickness(~200 nm)and a narrow optimum fluence window.Furthermore,we use this approach to fabricate high-quality binary phase masks(BPMs)directly on glass,which exhibit well-definedπphase shifts and efficient diffraction under HeNe laser illumination.Post-deposition thermal oxidation transforms the transferred SiOxinto fully transparent SiO2,making the structures suitable for UV optical applications.The resulting components demonstrate excellent mechanical robustness and resistance to standard cleaning procedures.This work establishes a solid-state pathway for fabricating functional glass-based micro-optical elements via LIFT. 展开更多
关键词 Additive manufacturing Glass printing Silicon suboxide LIFT process Binary phase masks
Invalidation manner and mechanism of new type NbO electrolytic capacitor anode 认领 引用
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作者 LI Jian YI Dan-qing WEN Jun-jie LIU Hui-qun ZHONG Hui 《Journal of Central South University of Technology》 2005年第Z1期18-22,共5页
Niobium suboxide powder was pressed and sintered in vacuum into NbO electrolytic capacitor sintered anode..High voltage and constant current formation experiment was performed on NbO electrolytic capacitor anode,durin... Niobium suboxide powder was pressed and sintered in vacuum into NbO electrolytic capacitor sintered anode..High voltage and constant current formation experiment was performed on NbO electrolytic capacitor anode,during which electrolyte was 0.01 % Ha PO4 solution, temperature was 90 C and current was 50 mA per gram sample. Through the relationship between anode voltage and time and scanning electron microscopy(SEM) images of invalidated anode and normal forming anode, invalidation manner and mechanism of NbO electrolytic capacitor anode were discussed. The results show that, the main invalidation manner of NbO electrolytic capacitor anode is not short circuit but open circuit, which is different to that of traditional Ta electrolytic capacitor anode. The reason of invalidation is that anode oxide film whose thickness increases gradually penetrates the "connection neck" among anode powder particles, which leads to the open circuit invalidation of anode. Compared with Ta electrolytic capacitor,NbO electrolytic capacitor has better security. 展开更多
关键词 niobium suboxide NbO invalidation manner invalidation mechanism electrolytic capacitor anode
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Rational structure design to realize high-performance SiOx@C anode material for lithium ion batteries 认领 引用 被引量：11
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作者 Zhaolin Li Hailei Zhao +4 位作者 Jie Wang Tianhou Zhang Boyang Fu Zijia Zhang Xin Tao 《Nano Research》 SCIE EI CSCD 2020年第2期527-532,共6页
Silicon suboxide(SiOx)is considered to be one of the most promising materials for next-generation anode due to its high energy density.For its preparation,the wet-chemistry method is a cost-effective and readily scala... Silicon suboxide(SiOx)is considered to be one of the most promising materials for next-generation anode due to its high energy density.For its preparation,the wet-chemistry method is a cost-effective and readily scalable route,while the so-derived SiOx usually shows lower capacity compared with that prepared by high temperature-vacuum evaporation route.Herein,we present an elaborate particle structure design to realize the wet-chemistry preparation of a high-performance SiOx/C nanocomposite.Dandelion-like highly porous SiOx particle coated with conformal carbon layer is designed and prepared.The highly-porous SiOx skeleton provides plenty specific surface for intimate contact with carbon layer to allow a deep reduction of SiOx to a low O/Si ratio at relatively low temperature(700℃),enabling a high specific capacity.The abundant mesoscale voids effectively accommodate the volume variation of SiOx skeleton,ensuring the high structural stability of SiOx@C during lithiation/delithiation process.Meanwhile,the three-dimensional(3D)conformal carbon layer provides a fast electron/ion transportation,allowing an enhanced electrodereaction kinetics.Owing to the optimized O/Si ratio and well-engineered structure,the prepared SiOx@C electrode delivers an ultra-high capacity(1,115.8 mAh·g^-1 at 0.1 A·g^-1 after 200 cycles)and ultra-long lifespan(635 mAh·g^-1 at 2 A·g^-l after 1,000 cycles).To the best of our knowledge,the achieved combination of ultra-high specific capacity and ultra-long cycling life is unprecedented. 展开更多
关键词 mesoporous structure silicon suboxide electrochemical properties anode lithium ion batteries
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Efficient fluidization intensification process to fabricate in-situ dispersed(SiO+G)/CNTs composites for high-performance lithium-ion battery anode applications 认领 引用 被引量：2
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作者 Hebang Shi He Zhang +4 位作者 Chaoquan Hu Shaofu Li Maoqiao Xiang Pengpeng Lv Qingshan Zhu 《Particuology》 SCIE EI CAS CSCD 2021年第3期84-90,共7页
An efficient fluidization process intensification method was proposed to prepare carbon nanotube(CNT)-enhanced high-performance SiO anodes for lithium-ion batteries.The introduction of graphite particles decreased bon... An efficient fluidization process intensification method was proposed to prepare carbon nanotube(CNT)-enhanced high-performance SiO anodes for lithium-ion batteries.The introduction of graphite particles decreased bonding among SiO particles,inhibiting agglomerate growth and enhancing fluidization.The(SiO+G)/CNTs composites were synthesized by fluidized bed chemical vapor deposition with the CNTs grown in-situ,which ensured uniform dispersion and superior anchoring of the CNTs.The in-situ-grown CNTs and stacked graphite ensured excellent structural stability and conductivity.The synthesized(SiO+G)/CNTs delivered a stable reversible capacity of 466 mAh g−1 after 125 cycles and a capacity of∼200 mAh g−1 at 2 A g−1.The charging results indicated that the 3D network structure comprising CNTs and graphite not only effectively buffered the electrode expansion but also greatly improved mechanical flexibility. 展开更多
关键词 Process intensification Fluidized bed chemical vapor deposition Carbon nanotubes Silicon suboxide anode
Ti4O7coating creates a highly stable Zn anode for aqueous zinc-ion batteries 认领 引用 被引量：4
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作者 Mengjuan Chen Yimeng Cui +7 位作者 Wenfeng Liu Zhenpu Shi Hongyu Dong Hongyun Yue Zhaoxia Cao Zhansheng Lu Shuting Yang Yanhong Yi 《Inorganic Chemistry Frontiers》 SCIE EI 2024年第15期4748-4756,共9页
Aqueous zinc-ion batteries(AZIBs)are one of the most promising energy storage devices owing to their high capacity,low cost,high safety,and environmental friendliness.However,the corrosion of the zinc metal and dendri... Aqueous zinc-ion batteries(AZIBs)are one of the most promising energy storage devices owing to their high capacity,low cost,high safety,and environmental friendliness.However,the corrosion of the zinc metal and dendrite growth hinder the commercialization of AZIBs.To solve these problems,a hydrophilic titanium suboxide(Ti4O7)-coating method was proposed for the formation of a protective layer on the zinc foil surface through a scraping technique. 展开更多
关键词 zinc foil surface coating dendrite growth scraping technique hydrophilic titanium suboxide coating energy storage devices formation protective layer zinc metal
Sub-stoichiometric functionally graded titania fibres for water-splitting applications 认领 引用 被引量：1
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作者 Vaia Adamaki A.Sergejevs +3 位作者 C.Clarke F.Clemens F.Marken C.R.Bowen 《Journal of Semiconductors》 EI CAS CSCD 2015年第6期11-16,共6页
The photo-electro-chemical （PEC） splitting of water requires semiconductor materials with a minimum energy gap of 1.23 eV along with conduction and valence bands overlapping the oxidation of H20 and reduction of H＋... The photo-electro-chemical （PEC） splitting of water requires semiconductor materials with a minimum energy gap of 1.23 eV along with conduction and valence bands overlapping the oxidation of H20 and reduction of H＋ respectively. This work overcomes the limitations of stoichiometric titania by manufacturing fine scale fibres that exhibit a compositional gradient of oxygen vacancies across the fibre length. In such a fibre configuration the fibre end that is chemically reduced to a relatively small extent performs as the photoanode and the oxygen vacan- cies enhance the absorption of light. The fibre end that is reduced the most consists of Magn61i phases and exhibits metallic electrical conductivity that enhances the electron-hole separation. The structure and composition of the functionally graded fibres, which were manufactured through extrusion, pressureless sintering and carbo-thermal reduction, are studied using XRD and electron microscopy. Electrochemical impedance spectroscopy measure- ments were performed in a three-electrode electrochemical system and showed that the oxygen vacancies in the functionally graded fibres affect the fiat band potential and have increased carrier density. The efficiency of the system was evaluated with PEC measurements that shows higher efficiency for the functionally graded fibres com- pared to homogeneous TiO2 or Magn61i phase fibres. The functionally graded and fine scale fibres have the potential to be used as an array of active fibres for water splitting applications. 展开更多
关键词 titania suboxides water splitting photocurrent
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