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In situ decoration of nanosized metal oxide on highly conductive MXene nanosheets as efficient catalyst for Li-O2 battery 认领 引用 被引量：6
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作者 Xingyu Li Caiying Wen +1 位作者 Huifeng Li Genban Sun 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第8期272-280,I0010,共9页
Combining nanomaterials with complementary properties in a well-designed structure is an effective tactic to exploit multifunctional, high-performance materials for the energy conversion and storage. Nonprecious metal... Combining nanomaterials with complementary properties in a well-designed structure is an effective tactic to exploit multifunctional, high-performance materials for the energy conversion and storage. Nonprecious metal catalysts, such as cobalt oxide, with superior activity and excellent stability to other catalysts are widely desired. Nevertheless, the performance of CoO nanoparticles as an electrode material were significantly limit for its inferior conductivity, dissolution, and high cohesion. Herein, we grow ultrafine cobalt monoxide to decorate the interlayer and surface of the Ti3C2 Txnanosheets via a hydrothermal method companied by calcination. The layered MXenes act as the underlying conductive substrate,which not only increase the electron transfer rate at the interface but also greatly improve the electrochemical properties of the nanosized Co O particles by restricting the aggregation of CoO. The resulting CoO/Ti3C2 Txnanomaterial is applied as oxygen electrode for lithium-oxygen battery and achieves more than 160 cycles and first cycle capacity of 16,220 mAh g-1 at 100 mA g-1. This work paves a promising avenue for constructing a bi-functional catalyst by coupling the active component of a transition metal oxide(TMO) with the MXene materials in lithium-oxygen battery. 展开更多
关键词 MXene Nanosized CoO Li-O2 batteries Cathode catalyst
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MoO2 nanoparticles/carbon textiles cathode for high performance flexible Li-O2 battery 认领 引用 被引量：3
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作者 Jia Liu Dan Li +4 位作者 Ying Wang Siqi Zhang Ziye Kang Haiming Xie Liqun Sun 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第8期66-71,I0003,共6页
Conventional Li-O2 battery is hardly considered as a next-generation flexible electronics thus far,since it is inflexible,bulk,and limited by the absence of the adjustable cell configuration.Here,we report a binder-fr... Conventional Li-O2 battery is hardly considered as a next-generation flexible electronics thus far,since it is inflexible,bulk,and limited by the absence of the adjustable cell configuration.Here,we report a binder-free and flexible electrode of x wt%MoO2 NPs/CTs(x=6,16,and 28).A cell with 16 wt% MoO2 NPs/CTs displays a good cyclability over 240 cycles with a low overpotential of 0.33 V on the 1st cycle at a constant current density of 0.2 mA cm-2,a considerable rate performance,a superior reversibility associated with the desired formation and degradation of Li2O2,and a high electrochemical stability even under stringent bending and twisting conditions.Our work represents a promising progress in the material development and architecture design of O2 electrode for flexible Li-O2 batteries. 展开更多
关键词 MoO2 nanoparticles Flexible electrode Li-O2 battery High electrochemical stability
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Recent advances in electrocatalysts for non-aqueous Li-O2 batteries 认领 引用 被引量：5
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作者 Wei Chen Ya-Feng Gong Jie-Hua Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2017年第4期709-718,共10页
As one of the next-generation energy-storage devices,Li-O_2 battery has become the main research direction for the academic researchers due to its characteristics of environmental friendship,relatively simple structur... As one of the next-generation energy-storage devices,Li-O_2 battery has become the main research direction for the academic researchers due to its characteristics of environmental friendship,relatively simple structures,high energy density of 3500Wh/kg and low cost.However,Li-O_2 battery cannot be commercialized on a large scale because of the challenging issues including high-efficient electrocatalysts,membranes,Li-based anode and so on.In this review,we focused on the recent development of electrocatalyst materials as cathodes for the non-aqueous Li-O_2 batteries which are relatively simpler than other Li-O_2 batteries＇ structures.Electrocatalysts were summarized including noble metals,nanocarbon materials,transition metals and their hybrids.We points out that the challenges of preparation high-efficient catalysts not only require high catalytic activity and conductivity,but also have novel nanoarchitectures with large interface and porous volume for LiO_x storage.Furthermore,the further investigation of reaction mechanism and advanced in situ analysis technologies are welcome in the coming work. 展开更多
关键词 Electric vehicle Li-O2 battery High capacity Catalysts Electrocatalysis
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基于分子模拟的Li-O2电池阴极反应路径分析 认领 引用
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作者 孙红 刘甲强 +1 位作者 李洁 任海超 《沈阳建筑大学学报（自然科学版）》 CAS CSCD 北大核心 2020年第3期543-551,共9页
目的研究Li-O2电池阴极放电反应的具体路径,解决锂空气电池ORR反应路径不明确的问题.方法运用分子动力学原理,建立Li-O2电池阴极催化剂Pt(111)表面及氧分子模型;根据密度泛函理论和第一性原理,针对最有效的氧吸附模型进行反应路径分析.... 目的研究Li-O2电池阴极放电反应的具体路径,解决锂空气电池ORR反应路径不明确的问题.方法运用分子动力学原理,建立Li-O2电池阴极催化剂Pt(111)表面及氧分子模型;根据密度泛函理论和第一性原理,针对最有效的氧吸附模型进行反应路径分析.结果吸附模型1是氧分子吸附在Pt(111)表面吸附的主要形式;Li离子和O2在阴极催化剂Pt(111)表面遵循2e反应路径.结论阴极催化剂Pt(111)表面初始生成Li2O2,溶解氧供应充足时会继续生成Li2O2团簇,溶解氧供应不足容易生成不可逆的Li2O产物;研究结果对分析Li-O2电池反应机理和改善Li-O2电池的性能具有重要价值. 展开更多
关键词 Li-O2电池 反应路径 还原反应 分子模拟
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Understanding oxygen reactions in aprotic Li-O2 batteries 认领 引用
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作者 马顺超 张业龙 +2 位作者 崔清华 赵婧 彭章泉 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第1期58-67,共10页
Although significant progress has been made in many aspects of the emerging aprotic Li-O2 battery system, an indepth understanding of the oxygen reactions is still underway. The oxygen reactions occurring in the posit... Although significant progress has been made in many aspects of the emerging aprotic Li-O2 battery system, an indepth understanding of the oxygen reactions is still underway. The oxygen reactions occurring in the positive electrode distinguish Li-O2 batteries from the conventional Li-ion cells and play a crucial role in the Li-O2 cell＇s performance （capacity, rate capability, and cycle life）. Recent advances in fundamental studies of oxygen reactions in aprotic Li-O2 batteries are reviewed, including the reaction route, kinetics, morphological evolution of Li2O2, and charge transport within Li2O2. Prospects are also provided for future fundamental investigations of Li-O2 chemistry. 展开更多
关键词 Li-O2 batteries oxygen reduction reactions oxygen evolution reactions kinetics
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Micro–meso-macroporous FeCo-N-C derived from hierarchical bimetallic FeCo-ZIFs as cathode catalysts for enhanced Li-O2 batteries performance 认领 引用 被引量：5
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作者 Fufang Chao Baoxing Wang +6 位作者 Jiaojiao Ren Yingwei Lu Wenrui Zhang Xizhang Wang Lin Cheng Yongbing Lou Jinxi Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第8期212-219,I0008,共8页
Developing bifunctional catalysts that increase both the OER and ORR kinetics and transport reactants with high efficiency is desirable. Herein, micro–meso-macroporous FeCo-N-C-X(denoted as "MFeCo-N-C-X", X... Developing bifunctional catalysts that increase both the OER and ORR kinetics and transport reactants with high efficiency is desirable. Herein, micro–meso-macroporous FeCo-N-C-X(denoted as "MFeCo-N-C-X", X represents Fe/Co molar ratio in bimetallic zeolite imidazole frameworks FeCo-ZIFs) catalysts derived from hierarchical M-FeCo-ZIFs-X was prepared. The micropores in M-FeCo-N-C-X have strong capability in O2 capture as well as dictate the nucleation and early-stage deposition of Li2O2,the mesopores provided a channel for the electrolyte wetting, and the macroporous structure promoted more available active sites when used as cathode for Li-O2 batteries. More importantly, M-Fe CoN-C-0.2 based cathode showed a high initial capacity(18,750 mAh g-1@0.1 A g-1), good rate capability(7900 m Ah g-1@0.5 A g-1), and cycle stability up to 192 cycles. Interestingly, the FeCo-N-C-0.2 without macropores suffered relatively poorer stability with only 75 cycles, although its discharge capacity was still as high as 17,200 mA h g-1(@0.1 A g-1). The excellent performance attributed to the synergistic contribution of homogeneous Fe, Co nanoparticles and N co-doping carbon frameworks with special micro–meso-macroporous structure. The results showed that hierarchical FeCo-N-C architectures are promising cathode catalysts for Li-O2 batteries. 展开更多
关键词 Micro–meso-macroporous FeCo-N-C Li-O2 battery Cathode catalyst Oxygen evolutioneduction reaction
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Remarkable improvement of cyclic stability in Li-O2 batteries using ruthenocene as a redox mediator 认领 引用 被引量：5
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作者 Cuicui Zhu Yiping Wang +9 位作者 Ling Shuai Yizhao Tang Ming Qiu Jian Xie Jia Liu Wen Wen Hengquan Chen Suifei Nan Mei Dou Qinggang He 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第7期1997-2002,共6页
Nonaqueous Li-O2 batteries attract attention for their theoretical specific energy density.However,due to the difficulty of decomposition of Li2 O2,Li-O2 batteries have high charge overpotential and poor cycling life.... Nonaqueous Li-O2 batteries attract attention for their theoretical specific energy density.However,due to the difficulty of decomposition of Li2 O2,Li-O2 batteries have high charge overpotential and poor cycling life.So all kinds of catalysts have been studied on the cathode.Compared to heterogeneous solid catalysts,soluble catalysts achieve faster and more effective transport of electrons by reversible redox pairs.Here,we first report ruthenocene(Ruc) as a mobile redox mediator in a Li-O2 battery.0.01 mol/L Ruc in the electrolyte effectively reduces the charging voltage by 610 mV.Additionally,Ruc greatly increases the cycling life by four-fold(up to 83 cycles) with a simple ketjen black(KB) cathode.The results of SEM,XPS and XRD confirm that less discharge product residue accumulated after recharge.To verify the reaction mechanisms of the mediato r,free energy profiles of the possible reaction pathways based on DFT are provided. 展开更多
关键词 Li-O2 battery Redox mediator Ruthenocene Li2O2 Cycling life
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Au/Nafion复合膜的制备及其在Li-O2电池中的应用 认领 引用
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作者 程相阳 《山东化工》 CAS 2019年第15期32-33,共2页
通过真空蒸镀法将金与Nafion膜进行复合得到Au/Nafion复合膜,使用阻抗和恒电流极化分析得到其与锂负极有良好的兼容性和较小的界面电阻,应用在Li-O2电池中,电池放电电压平台高,不会出现"突然死亡"现象,说明它隔绝了负极与电... 通过真空蒸镀法将金与Nafion膜进行复合得到Au/Nafion复合膜,使用阻抗和恒电流极化分析得到其与锂负极有良好的兼容性和较小的界面电阻,应用在Li-O2电池中,电池放电电压平台高,不会出现"突然死亡"现象,说明它隔绝了负极与电解液的接触,起到锂负极保护的作用。 展开更多
关键词 Li-O2电池 Au/Nafion复合膜 真空蒸镀
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Ordered two-dimensional porous Co3O4 nanosheets as electrocatalysts for rechargeable Li-O2 batteries 认领 引用 被引量：4
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作者 Yu Zhang Mingzhen Hu +6 位作者 Mengwei Yuan Genban Sun Yufeng Li Kebin Zhou Chen Chen Caiyun Nan Yadong Li 《Nano Research》 SCIE EI CSCD 2019年第2期299-302,共4页
Lithium-oxygen batteries have attracted considerable interest in the past a few years, because they have higher theoretical specific energy than Li-ion batteries. However, the available en ergy den sities of the Li-O2... Lithium-oxygen batteries have attracted considerable interest in the past a few years, because they have higher theoretical specific energy than Li-ion batteries. However, the available en ergy den sities of the Li-O2 batteries are much less than expected. It is particularly urgent to find catalyst with high activity. Herein, a series of Co3O4 with differe nt morphologies (ordered two-dimensio nal porous nano sheets, flowerlike and cuboidlike) were successfully prepared through facile hydrothermal and calcinatio n methods. Ordered two-dime nsional Co3O4 nano sheets show the best cycling stability. Detailed experimental results reveal that the superiority of the unique two-dimensional uniform porous structures is vital for Li-O2 batteries cathode catalysts. Due to the ordered structures with high surface areas and active sites, the catalysts indicate a high specific discharge capacity of about 10,417 mAh/g at a current density of 200 mA/g, and steadily cycle for more than 50 times with a limited capacity of 1,000 mAh/g. 展开更多
关键词 Li-O2 battery ordered two-dimensional porous CO3O4
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12-冠-4对非质子Li-O2电池氧电极的影响(英文) 认领 引用 被引量：2
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作者 王晓晨 王英明 +5 位作者 刘威 白若鹏 刘艳芳 肖丽 陆君涛 庄林 《物理化学学报》 SCIE CAS CSCD 北大核心 2016年第1期343-348,共6页
Li-O2电池放电产物Li2O2由于在有机溶剂中溶解度较差,会堵塞气体通道,这是Li-O2电池面临的一个主要挑战。在本工作中,我们选择12-冠-4做为添加剂捕获Li^+,来研究其对氧电极放电产物溶解性的影响,并采用了多种电化学表征方法... Li-O2电池放电产物Li2O2由于在有机溶剂中溶解度较差,会堵塞气体通道,这是Li-O2电池面临的一个主要挑战。在本工作中,我们选择12-冠-4做为添加剂捕获Li^+,来研究其对氧电极放电产物溶解性的影响,并采用了多种电化学表征方法,包括循环伏安法和旋转圆盘电极等。结果显示,仅仅添加5%的12-冠-4就能明显提高氧还原产物O2^-的稳定性,并减少固体Li2O2的生成。结合软硬酸碱和第一性原理计算对上述实验结果进行了解释。 展开更多
关键词 Li-O2电池 氧电极 冠醚 软硬酸碱理论
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Uniformly dispersed FeOx atomic clusters by pulsed arc plasma deposition: An efficient electrocatalyst for improving the performance of Li-O2 battery 认领 引用 被引量：3
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作者 Xiangyi Luo Jun Lu +8 位作者 Evan Sohm Lu Ma Tianpin Wu Jianguo Wen Dantong Qiu YunKai Xu Yang Ren Dean J. Miller Khalil Amine 《Nano Research》 SCIE EI CSCD 2016年第7期1913-1920,共8页
The present study explored a new method to improve the catalytic activity of non-precious metals, especially in electrochemical reactions. Highly ionized Fe plasma produced by arc discharge was uniformly deposited on ... The present study explored a new method to improve the catalytic activity of non-precious metals, especially in electrochemical reactions. Highly ionized Fe plasma produced by arc discharge was uniformly deposited on a porous carbon substrate and formed atomic clusters on the carbon surface. The as-prepared FeO~/C material was tested as a cathode material in a rechargeable Li-02 battery under different current rates. The results showed significant improvement in battery performance in terms of both cycle life and reaction rate. Furthermore, X-ray diffraction （XRD） and scanning electron microscopy （SEM） results showed that the as-prepared cathode material stabilized the cathode and reduced side reactions and that the current rate was a critical factor in the nucleation of the discharge products. 展开更多
关键词 Li-O2 battery FeOx atomic cluster electrocatalyst pulsed arc plasmadeposition （APD）
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CeO2@NiCo2O4 nanowire arrays on carbon textiles as high performance cathode for Li-O2 batteries 认领 引用 被引量：3
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作者 Zhen-Dong Yang Zhi-Wen Chang +2 位作者 Ji-Jing Xu Xiao-Yang Yang Xin-Bo Zhang 《Science China Chemistry》 SCIE EI CAS CSCD 2017年第12期1540-1545,共6页
The successful development of Li-O_2 battery technology depends on developing a stable and efficient cathode. As an important step toward this goal, for the first time, we report the development of CeO_2 nanoparticles... The successful development of Li-O_2 battery technology depends on developing a stable and efficient cathode. As an important step toward this goal, for the first time, we report the development of CeO_2 nanoparticles modified NiCo_2O_4 nanowire arrays(NWAs) grown on the carbon textiles as a new carbon-free and binder-free cathode system. In this study, the Li-O_2 battery with the CeO_2@NiCo_2O_4 NWAs has exhibited much reduced overpotentials, a high discharge capacity, an improved cycling stability,outperforming the Li-O_2 battery with NiCo_2O_4 NWAs. These improvements can be attributed to both the tailored morphology of discharge product and improved oxygen reduction reaction(ORR) and oxygen evolution reaction(OER) activity after CeO_2 NPs deposition. To a considerable extent, this idea of cathode construction including structure design and composition optimization can provide guidance for further researches in developing more powerful cathode for Li-O_2 battery. 展开更多
关键词 Li-O2 battery efficient cathode design CeO2 nanoparticles NiCo2O4 nanowire arrays improved electrochemical performances
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全固态Li-O_2(air)电池研究进展 认领 引用 被引量：2
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作者 卢佳垚 厉英 孔亚州 《化工新型材料》 CAS CSCD 北大核心 2017年第9期43-45,共3页
锂空气电池[Li-O_2(air)]具有极高的能量密度,引起了越来越多的关注。全固态Li-O_2(air)电池使用不易燃的无机固体锂离子导体材料作为电池电解质,大大提高了电池的安全性能。研发具有高离子电导率、高稳定性的固体电解质对全固态Li-O_2(... 锂空气电池[Li-O_2(air)]具有极高的能量密度,引起了越来越多的关注。全固态Li-O_2(air)电池使用不易燃的无机固体锂离子导体材料作为电池电解质,大大提高了电池的安全性能。研发具有高离子电导率、高稳定性的固体电解质对全固态Li-O_2(air)电池的发展起到极大的推动作用。此外,研发高性能正极催化剂、采取合理的技术手段提高电极/固体电解质界面性能也是全固态Li-O_2(air)电池面临的挑战。分别从正极、负极、固体电解质以及电极/电解质界面等方面对全固态Li-O_2(air)电池进行综述。 展开更多
关键词 Li-O2(air)电池 固体电解质 正极 界面性能
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The origin of potential rise during charging of Li-O2 batteries 认领 引用 被引量：1
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作者 Limin Guo Jiawei Wang +3 位作者 Shunchao Ma Yantao Zhang Erkang Wang Zhangquan Peng 《Science China Chemistry》 SCIE EI CAS CSCD 2017年第12期1527-1532,共6页
When aprotic Li-O2 batteries recharge, the solid Li2O2 in the positive electrode is oxidized, which often exhibits a continuous or step increase in the charging potential as a function of the charging capacity, and it... When aprotic Li-O2 batteries recharge, the solid Li2O2 in the positive electrode is oxidized, which often exhibits a continuous or step increase in the charging potential as a function of the charging capacity, and its origin remains incompletely understood. Here, we report a model study of electro-oxidation of a Li2O2 film on an Au electrode using voltammetry coupled with in situ Raman spectroscopy. It was found that the charging reaction initializes at the positive electrodelLizO2 interface, instead of the previously presumed Li2O2 surface, and consists of two temporally and spatially separated Li2O2 oxidation processes, accounting for the potential rise during charging of Li-O2 batteries. Moreover, the electrode surface-initialized oxidation can disintegrate the Li2O2 film resulting in a loss of Li2O2 into electrolyte solution, which drastically decreases the charging efficiency and highlights the importance of using soluble electro-catalyst for the complete charging of Li-02 batteries. 展开更多
关键词 aprotic Li-O2 battery reactive site oxygen evolution reaction surface enhanced Raman spectroscopy oxygen electrochemistry
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Li-O_2 batteries 认领 引用
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作者 Yingying Lu 《Green Energy & Environment》 SCIE EI CAS 2016年第1期3-3,共1页
Science 2015,350,530-533Rechargeable lithium-air（Li-O2）batteries have received considerable attentions due to their much higher theoretical energy densities than today’s lithium-ion batteries.However,they still suf... Science 2015,350,530-533Rechargeable lithium-air（Li-O2）batteries have received considerable attentions due to their much higher theoretical energy densities than today’s lithium-ion batteries.However,they still suffer from at least four limitations:（1）much lower capacity than theoretical capacity,stemming from the small pore sizes and volumes of the current porous electrode;（2）side reactions,including electrode materials,electrolyte,intermediate and final discharge products;（3）large 展开更多
关键词 Li-O2 batteries
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Li-O_2(Air)电池研究进展 认领 引用
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作者 黎红 杨林億 《船电技术》 2018年第7期21-27,共7页
随着社会的发展,人们越来越需要绿色节能的储能电源。高比能量的Li-O2(Air)电池逐渐受到人们的关注。本文从Li-O2(Air)电池体系和电池阴极两方面入手,对近年来在电解液、炭载体、催化剂方面取得的突破性进展进行介绍,并对研究方面存在... 随着社会的发展,人们越来越需要绿色节能的储能电源。高比能量的Li-O2(Air)电池逐渐受到人们的关注。本文从Li-O2(Air)电池体系和电池阴极两方面入手,对近年来在电解液、炭载体、催化剂方面取得的突破性进展进行介绍,并对研究方面存在的科学问题进行了介绍,指出了该电池发展过程中需要解决的关键科学问题。 展开更多
关键词 Li-O2(Air)电池 高比能 电池体系 电解液 炭载体 催化剂
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A High Power Carbon/LiMxOyHybrid Cathode for Non-Aqueous Li-O2Battery 认领 引用
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作者 Ming Song Jing Peng Xiang Yu 《Advances in Materials Physics and Chemistry》 CAS 2017年第10期364-374,共11页
Among all the issues that restrict the application of Li-air battery, poor power performances of O2 cathode comes first. In this paper, we establish carbon (Super P)/LiMxOy (LiMn2O4/LiFePO4/LiNi1/3Co1/3Mn1/3O2) hybrid... Among all the issues that restrict the application of Li-air battery, poor power performances of O2 cathode comes first. In this paper, we establish carbon (Super P)/LiMxOy (LiMn2O4/LiFePO4/LiNi1/3Co1/3Mn1/3O2) hybrid cathode to promote the power output of conventional carbon cathode through continuous Li+-insertion reaction of LiMxOy and Li+ transportation in bulk LiMxOy during the discharging process. Weight and volume specific power performances of the hybrid cathode are much higher than those of traditional Super P carbon cathode. The mechanism of improving power performance of O2 cathode has also been discussed through electrochemical impedance spectroscopy and cyclic voltammetry method in this paper. 展开更多
关键词 Power Performance Li-O2 Battery Hybrid Cathode
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Enhanced performance of solid-state Li–O_2 battery using a novel integrated architecture of gel polymer electrolyte and nanoarray cathode 认领 引用 被引量：7
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作者 Liang Xiao Er-Wei Li +3 位作者 Jing-Yu Yi Wen Meng Bo-Hua Deng Jin-Ping Liu 《Rare Metals》 SCIE EI CAS CSCD 2018年第6期527-535,共9页
The present work proposes a novel strategy to fabricate an integrated architecture of gel polymer electrolyte （GPE）-nanoarray cathode for lithium-O2 batteries （LOBs）. As a proof-of-concept experiment, the photo-in... The present work proposes a novel strategy to fabricate an integrated architecture of gel polymer electrolyte （GPE）-nanoarray cathode for lithium-O2 batteries （LOBs）. As a proof-of-concept experiment, the photo-initiated in situ polymerization of GPE was carried out via incorporating the precursor solution in advance into a self- standing binder-free oxygen electrode of Co3O4 nanosheets array grown on carbon cloth （Co3O4@CC）, forming an integrated GPE-Co3O4@CC architecture. The performance of the solid-state LOBs using the GPE-Co3O4@CC assembly is greatly enhanced compared to the counterparts with a traditional cell structure, in which GPE was sandwiched by a lithium metal and a cathode. The enhanced performance is ascribed to the combination of the in situ polymerization of GPE and the versatile structure of nanoarray electrode, which results in abundant interfacial contacts between GPE and electrode. This work presents an alternative way to develop high-performance solid-state LOBs by combining the advantages of both gel polymer electrolytes and nanoarray electrodes. 展开更多
关键词 Solid-state Li-O2 battery Gel polymer electrolyte Co3O4 nanosheet Nanoarray electrode Electrolyte-cathode interface
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A high-performance rechargeable Li–O_2 battery with quasi-solid-state electrolyte 认领 引用 被引量：1
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作者 Jia-Yue Peng Jie Huang +5 位作者 Wen-Jun Li Yi Wang Xiqian Yu Yongsheng Hu Liquan Chen Hong Li 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第7期556-560,共5页
A novel transparent and soft quasi-solid-state electrolyte （QSSE） was proposed and fabricated, which consists of ionic liquid （PYR14TFSI） and nano-fumed silica. The QSSE demonstrates high ionic conductivity of 4.6... A novel transparent and soft quasi-solid-state electrolyte （QSSE） was proposed and fabricated, which consists of ionic liquid （PYR14TFSI） and nano-fumed silica. The QSSE demonstrates high ionic conductivity of 4.6× 10-4 S/cm at room temperature and wide electrochemical stability window of over 5 V. The Li-O2 battery using such quasi-solidstate electrolyte exhibits a low charge-discharge overpotential at the first cycle and excellent long-term cyclability over 500 cycles. 展开更多
关键词 quasi-solid-state electrolyte Li-O2 battery
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Iridic oxide nanoparticles grown in situ on BCN nanotubes as highly efficient dual electrocatalyst for rechargeable lithium-O2 batteries 认领 引用 被引量：1
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作者 Xufang Li Yajun Zhao +5 位作者 Jing Zhang Chaoxiong Li Shan Wu Qiufan Shi Dawei Zhang Qingchun Yang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第10期291-298,共8页
Oxygen cathode catalysts can significantly address the issues faced by Li-O2 battery.In this research,a composite of IrO2 nanoparticles grown in situ on BCN nanotubes(IrO2@BCNNTs)has been synthesized by facile hydroth... Oxygen cathode catalysts can significantly address the issues faced by Li-O2 battery.In this research,a composite of IrO2 nanoparticles grown in situ on BCN nanotubes(IrO2@BCNNTs)has been synthesized by facile hydrothermal method,which is initially fabricated as cathode catalyst for Li-O2 battery.The results indicate that IrO2@BCNNTs nanocomposite has a better effect on improving the actual discharge capacity,voltage gap and cyclability of Li-O2 battery.In addition,it is also demonstrated that the Ir O2@BCNNTs composite exhibits bifunctional characteristics for both the oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)through rotating disk electrode(RDE)measurements.The excellent performances of the synthesized catalyst may be attributed to the unique interconnected tubular structure and strong synergistic effect,which can provide more charged sites and defect sites and then facilitate reversible Li2 O2 formation and decomposition.Therefore,it is promising for applying the rational design of the bifunctional catalyst to Li-O2 battery. 展开更多
关键词 BCN nanotubes IrO2@BCNNTs composite Rechargeable Li-O2 batteries
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