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金属氧化物用于锂硫电池硫正极材料改性的研究进展

本站小编 Free考研考试/2021-12-27

中文关键词:锂硫电池 金属氧化物 正极复合材料 电化学 储能机制 英文关键词:lithium-sulfur battery, metal oxide, cathode composite, electrochemistry, energy storage mechanism 基金项目:陕西省自然科学资助项目(2019JQ-730),中国博士后面上资助项目(2018M633544,2019M653706),陕西省博士后科研资助项目(2018BSHEDZZ120),西安理工大学博士启动基金(101-451117007),国家国际科技合作专项项目(2015DFR50350),国家自然科学基金(51702256)和陕西省科技厅创新人才推进计划-科技创新团队项目(2019TD-019)。
作者单位E-mail
惠鹏西安理工大学731575590@qq.com
杨蓉西安理工大学
邓七九西安理工大学
燕映霖西安理工大学
许云华榆林学院
摘要点击次数:1424 全文下载次数:0 中文摘要: 锂硫电池因其具有能量密度高、原料丰富和价格低廉等优势而被认为是下一代的重要储能器件。但是,锂硫电池的发展仍面临诸多问题,包括多硫化物的穿梭效应、单质硫的导电性差、充电过程中硫体积膨胀导致的库仑效率差,容量快速衰减以及锂负极的腐蚀等。近年来,金属氧化物由于具有可吸附多硫化物、提高多硫化物之间的相互转化能力、形成3D形态纳米级结构及对主体材料与多硫化物之间的结合能发挥着关键作用等优点在锂硫电池正极材料的改性方面广泛应用。本文综述了多类的金属氧化物(过渡金属氧化物、二元及多元金属氧化物、其它金属氧化物)在锂硫电池正极复合材料改性中的研究进展,并对金属氧化物在锂硫电池中的应用前景进行了展望。 英文摘要: Lithium-sulfur batteries are considered to be the next generation of energy storage devicesdue to their high energy density, abundant raw materials and low price. However, the development of lithium-sulfur batteries still faces many problems, including the shuttle effect of polysulfide, the poor conductivity of elemental sulfur, the poor coulombic efficiency caused by sulfur volume expansion during charging, the rapid decay of capacity and the corrosion of lithium anode. In recent years, metal oxides have been widely used in the modification of positive electrodes of lithium-sulfur batteries because of their ability to adsorb polysulfides, improving the mutual conversion ability between polysulfides, forming nanoscale structure with a 3D morphology, and playing a key role in the combination of host material and polysulfides. In this paper, the research progress in various metal oxides (transition metal oxides, binary and multi-metal oxides, other metal oxides) for the modification of lithium-sulfur battery cathode composites is reviewed. The application prospects of metal oxides in lithium-sulfur batteries is prospected. 查看全文查看/发表评论下载PDF阅读器 相关附件:版权转让声明书 -->
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