高能量密度离子电池的气态SO2添加剂
Xuequan Zhu1,2, Yueli Lin1, Qizheng Zheng1
1National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China.
Angewandte Chemie (International ed. in English)
|January 17, 2026
概括
二氧化硫 (SO2) 气体是一种废物,作为双重功能电解质添加剂. 这项创新显著提高了电池循环稳定性和高能储能应用的温度耐受性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
背景情况:
- 电解质添加剂工程对于提高高能量密度电池的性能至关重要.
- 传统的添加剂往往受到高成本,不稳定性和界面被动化的有效性有限的影响.
研究的目的:
- 为先进的电池开发一个可持续且具有成本效益的电解质添加剂战略.
- 为了提高电池性能和稳定性,利用工业废气.
主要方法:
- 使用二氧化硫 (SO2) 作为双重功能气态电解质添加剂.
- 在电池电极上研究SO2的电化学反应以在现场中形成相间反应.
- 在各种条件下测试使用SO2添加剂的囊细胞的性能.
主要成果:
- SO2促进了含硫界面的形成,抑制了电解质的分解.
- 4.4 V 类AG或NCM613袋式电池实现了超过800个循环,容量保留了88.2%.
- 该策略在4.3V级Si/C discrete NCM811袋式电池中表现出广泛的适用性,并提高了温度耐受性 (-30°C至45°C).
结论:
- 二氧化硫是一种高效的双重功能添加剂,可增强电池循环稳定性和温度耐受性.
- 这种方法通过将工业废物价值化为高性能电池组件,提供了一个可持续的途径.
- 该战略减少了电解质变色,延长了保质期,降低了成本,使环境目标与储能创新保持一致.
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