Unraveling the crystallinity on battery performances of chlorine-rich argyrodite electrolytes
发布时间：2022-02-08
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- 论文类型：
- 期刊论文
- 发表刊物：
- Journal of Power Sources
- 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：
- 520
- DOI码：
- 10.1016/j.jpowsour.2021.230890
- 发表时间：
- 2022-01-21
- 影响因子：
- 9.127
- 摘要：
- Chlorine-rich argyrodite Li5.5PS4.5Cl1.5 presents great potential for the application of solid-state batteries (SSBs) due to the high ionic conductivity and relatively low cost. However, the effect of crystallinity for Li5.5PS4.5Cl1.5 on the electrochemical performances of related solid-state batteries is unclear. Herein, the electrochemical performances of LiNi0.8Mn0.1Co0.1O2/SE/Li-In SSBs with crystalline and glass-ceramic Li5.5PS4.5Cl1.5 (c- and gc-LPSC) electrolytes are carefully investigated. Electrochemical tests show that SSBs using c-LPSC electrolytes deliver higher capacities and better rate performances than that of gc-LPSC electrolytes at different operating temperatures due to the higher Li-ion conductivity of the former. Moreover, the optimized solid-state battery delivers an initial discharge capacity of 120.2 mAhg(-1) at 5C and maintains 64% of the capacity after 3500 cycles under room temperature. At an elevated temperature (60 degrees C), a much higher discharge capacity of 145.5 mAh g(-1) is achieved and 80.8% of the capacity is sustained after 500 cycles. This work unravels the influence of the crystallinity of argyrodite electrolytes on the intrinsic properties, providing a guiding significance for the construction of high-performance solid-state batteries.