接口激素反应使离子电池的高性能石墨阳极成为可能
Jianhao Lin1, Xiaobo Ding1, Xinyue Zeng2
1School of Environment and Energy, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510006, P.R. China.
Angewandte Chemie (International ed. in English)
|January 20, 2026
概括
一种新的界面激素反应增强了离子电池 (PIB) 的石墨阳极. 这种修改提高了稳定性和动力学,使大规模储能能实现高性能.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 离子电池 (PIB) 对于大规模储能至关重要.
- 石墨阳极面临着固体电解质接口 (SEI) 稳定性和K+-溶剂协同插曲的挑战,限制循环稳定性和反应动力学.
研究的目的:
- 开发一个稳定高效的石墨阳极用于PIBs.
- 为了克服SEI不稳定性和K+-溶剂共同插曲的局限性.
主要方法:
- 在石墨和Spiro-O8激素之间采用机械化学诱导的激素反应.
- 在石墨上构建了一个统一的有机层,促进KFSI盐的分解,形成一个富含无机的外层.
主要成果:
- 修改后的石墨阳极显示了增强的K+运输动力学,并抑制了K+与溶剂的协同插曲.
- 斯皮罗-O8的内膜可以在循环过程中适应体积变化.
- 在100mAg-1下达到241.0mAhg-1的可逆容量,在1Ag-1下达到147.2mAhg-1的可逆容量.
- 在600个周期中表现出稳定的循环,容量保持率为89.4%.
结论:
- 接口基反应为稳定PIB中的石墨阳极提供了一种新策略.
- 这种方法显著提高了高性能PIB的循环稳定性和速率能力.
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