电化学
多硫化物
材料科学
极化(电化学)
化学工程
储能
异质结
氧化还原
硫黄
纳米技术
阴极
化学
光电子学
电极
冶金
工程类
量子力学
电解质
物理
物理化学
功率(物理)
作者
Xinqi Zhao,Xiaohong Sun,Ruisong Guo,Song Wang,Fuyun Li,Tingting Li,Shuhui Wang,Cheng Gong
标识
DOI:10.1002/celc.202100138
摘要
Abstract Lithium‐sulfur batteries (LSBs) are considered to be promising candidates for next‐generation energy storage devices because of high theoretical capacity of 1675 mAh g −1 . However, LSBs have failed to be put into practical applications mainly due to their shuttle effect. SnO 2 and SnS 2 stand out among many metal oxides and sulfides, and are frequently applied to LSBs research given their characteristics of easy preparation and good chemical stability. In particular, SnO 2 has a strong chemical adsorption effect on polysulfides through the S−Sn−O chemical bonds; SnS 2 can effectively reduce the electrochemical polarization and improve the redox efficiency of polysulfides. This Minireview summarizes and evaluates the latest research progress of SnO 2 , SnS 2 , and SnO 2 /SnS 2 heterostructures applied in LSBs including the cathode, separator, and interlayer. The three materials show excellent electrochemical performance and can serve as viable candidates for polysulfide immobilizers to deal with the shuttle effect in LSBs.
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