摘要
Lithium sulfur batteries(LSBs)are recognized as promising devices for developing next-generation energy storage systems.In addition,they are attractive rechargeable battery systems for replacing lithium-ion batteries(LIBs)for commercial use owing to their higher theoretical energy density and lower cost compared to those of LIBs.However,LSBs are still beset with some persistent issues that prevent them from being used industrially,such as the unavoidable dissolution of lithium polysulfide intermediates during electrochemical reactions and large volume expansion(up to 80%)upon the formation of Li_(2)S,resulting in serious battery life and safety limitations.In the process of solving these problems,it is necessary to maintain a high sulfur content in the cathode materials to ensure that the LSBs have high energy densities and excellent cycle performance.In this review,the novel preparation methods and cathode materials used for preparing LSBs in recent years are reviewed considering the sulfur content and cycle performance.In addition,the problems and difficulties in practically applying cathode materials are described,and the development trend is discussed.
基金
the National Natural Science Foundation of China(52103093)
the Young Elite Scientists Sponsorship Program by China Association for Science and Technology(2021QNRC001)
the Jiangxi Provincial Natural Science Foundation(20212BAB214048)
Science and Technology Support Project of Shangrao(2020L009,2021J006)
Science and Technological Project of Education Department of Jiangxi(GJJ211704)for funding their contributions to this paper。
