用于离子电池的高度稳定的ZnS阳极通过结构和电解质工程实现
Lei Zhao1, Jian Yin2,3, Jinxin Lin1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), 100 Waihuan Xi Road, Panyu District, Guangzhou 510006, China.
ACS nano
|January 18, 2024
概括
用剂合的碳外稳定离子电池的硫化阳极,防止结构崩并改善高性能能量存储的循环稳定性.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 硫化 (ZnS) 为离子电池阳极提供高容量.
- 颗粒ZnS遭受粉碎,导致电池故障.
- 开发稳定的ZnS阳极对于实际的离子电池应用至关重要.
研究的目的:
- 为高性能离子电池设计一个稳定的硫化阳极.
- 为了克服ZnS阳极的结构不稳定性和容量衰减问题.
- 为了提高转换阳极的循环稳定性和速率能力.
主要方法:
- 合成的硫化被封装在化碳外中 (ZnS@NC).
- 研究了化碳外所提供的结构稳定性.
- 在以太基电解质中分析了强大的固体电解质介相 (SEI) 的形成.
主要成果:
- 该ZnS@NC阳极的可逆特异容量为584mAhg-1.1.
- 观察到优秀的速率能力,在70 A g-1.1时有327 mAh g-1.
- 实现高度稳定的循环性能超过10,000个循环.
结论:
- 化碳外有效地稳定了ZnS活性质量结构.
- 强大的无机丰富的SEI层增强了循环稳定性.
- ZnS@NC为离子电池开发稳定,高性能转换阳极提供了一个可行的战略.
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