• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Recent Advances in Electrolytes for Lithium–Sulfur Batteries
【24h】

Recent Advances in Electrolytes for Lithium–Sulfur Batteries

机译：锂硫电池电解液的最新进展

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The rapidly increasing demand for electrical and hybrid vehicles and stationary energy storage requires the development of “beyond Li-ion batteries” with high energy densities that exceed those of state-of-the-art Li-ion batteries. Li–S batteries, which have very high theoretical capacities and energy densities, are believed to be one of the most promising candidates. The sulfur-based electrochemical reaction requires novel electrolytes to replace the classical carbonate-based electrolyte systems inherited from Li-ion batteries because carbonates are incompatible with the intermediate polysulfides in Li–S batteries. In addition, the theoretical specific capacities and projected energy densities of Li–S batteries are difficult to achieve experimentally, mainly because of the electronically insulating nature of sulfur and lithium sulfide cathodes, and the shuttle effect; this is a serious issue associated with the dissolution and diffusion of soluble polysulfides in most potential electrolytes and causes rapid capacity fading. It is therefore highly desirable to explore, modify, and/or optimize electrolytes for Li–S batteries to address these issues and improve their capacities, cycling stabilities, rate performances, and energy densities. An overview of recent developments in electrolytes for Li–S batteries is provided with a focus on the chemistry of polysulfides in different electrolyte media, including polysulfide solubility and its relevance to battery performance.
机译：对电动和混合动力汽车以及固定式能量存储的迅速增长的需求，要求开发具有高能量密度的“超越锂离子电池”，该能量密度超过了最新的锂离子电池。具有很高的理论容量和能量密度的Li-S电池被认为是最有前途的候选人之一。基于硫的电化学反应需要新型的电解质来代替锂离子电池继承的经典的基于碳酸盐的电解质系统，因为碳酸盐与锂锂电池中的中间多硫化物不相容。另外，锂-硫电池的理论比容量和预计的能量密度很难通过实验获得，这主要是由于硫和硫化锂阴极的电子绝缘特性以及穿梭效应。这是与大多数潜在电解质中可溶性多硫化物的溶解和扩散有关的一个严重问题，并导致容量快速衰减。因此，迫切需要探索，修改和/或优化Li-S电池的电解质，以解决这些问题并提高其容量，循环稳定性，倍率性能和能量密度。概述了用于Li-S电池的电解质的最新进展，重点介绍了在不同电解质介质中多硫化物的化学性质，包括多硫化物的溶解度及其与电池性能的关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号