高压长周期全固态电池与高元素化物电解质杂的高压长周期电池
Yu Ye1,2,3, Jiazhong Geng4, Daxian Zuo1
1Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
ACS nano
|July 6, 2024
概括
本研究介绍了全固态电池 (ASSB) 的新型化物固态电解质 (SSE). Li2.6在0.8Ta0.2Cl6表现出高离子导电性和稳定性,使得ASSB具有先进的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 固态化学 固态化学
背景情况:
- 全固态电池 (ASSB) 提供了更高的安全性和能量密度,但需要改进的固态电解质 (SSE).
- 关键的挑战包括在SSE中实现高离子导电性,电化学稳定性和良好的界面特性.
研究的目的:
- 使用高价值元素的兴奋剂策略开发新型化物SSEs.
- 研究这些SSE在ASSB中的离子导电性,电化学稳定性和性能.
主要方法:
- 化物SSEs通过用高价值元素进行兴奋的合成.
- 离子导电性,激活能量和氧化稳定性的表征.
- 使用LiCoO2阴极制造和测试ASSB.
主要成果:
- Li2.6In0.8Ta0.2Cl6在30°C时达到4.47mS cm-1的超离子导电性,低激活能量为0.321 eV.
- 电解质表现出极好的氧化稳定性,高达5.13V (vs Li+/Li).
- 使用LiCoO2阴极的ASSB显示超过1400个周期,在4.6V和135mAhg-1的4C下保持70%的容量.
结论:
- 使用高价值元素的化物SSE是增强离子导电性和稳定性的可行策略.
- 已开发的SSE对高压,高能量密度的ASSB充满希望.
- 这项研究为设计先进的SSE为更安全,更有效的储能系统铺平了道路.
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