Chlorine-rich lithium argyrodite enabling solid-state batteries with capabilities of high voltage, high rate, low-temperature and ultralong cyclability
发布时间：2022-02-08
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- 论文类型：
- 期刊论文
- 发表刊物：
- Chemical Engineering Journal
- 收录刊物：
- SCI
- 所属单位：
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology
- 学科门类：
- 工学
- 文献类型：
- J
- 卷号：
- 430
- DOI码：
- 10.1016/j.cej.2021.132896
- 发表时间：
- 2022-02-08
- 影响因子：
- 13.273
- 摘要：
- Solid-state batteries (SSBs) employing sulfide electrolytes (SEs) are considered with poor rate capability and short cycling span life, especially towards the pristine nickel-rich cathode. The high cost, low conductivity, and compatibility are regarded as the major obstacles. In this work, chlorine-rich Li5.5PS4.5Cl1.5 electrolyte with high conductivity (9.03 mS/cm) is synthesized via an easy scale-up route. The role of carbon in the cathode mixture is unraveled at room temperature (RT) and low temperature. SSBs using designed cathode without carbon deliver capacity retention of 82.4% after 10000 cycles under 10 C at room temperature and 97.0% after 200 cycles under 0.2 C at -20 ℃. This research shows the potential of utilizing SEs to manufacture SSBs with high rates and long cyclability under different temperatures.