矿抑制和死激活的双重功能添加剂用于金属电池
Erlei Zhang1, Huijie Tian1, Meng Li1
1School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P. R. China. fanlsh@hit.edu.cn.
概括
本研究引入了2--5-二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二 它增强了电极保护和利用率,显著提高了电池性能和寿命.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 金属电池 (LMB) 对于下一代能源存储至关重要.
- 开发稳定和高性能LMB需要有效的电解质添加剂.
- 保护负电极和提高利用率是关键的挑战.
研究的目的:
- 调查2--5-二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二
- 评估2-F-5-IPy对固体电解质介相 (SEI) 形成和金属循环的影响.
- 通过添加2-F-5-IPy来评估LMB的性能提升.
主要方法:
- 作为一种电解质添加剂,利用了2--5-二 (2-F-5-IPy).
- 在Li‖LiFePO4细胞上进行了电化学性能测试.
- 在对称细胞上进行了长期循环稳定性测试.
主要成果:
- 2-F-5-IPy通过形成稳定的SEI有效地保护了负电极.
- 添加剂将死转化为活,提高了的利用率.
- 在300个循环后,Li‖LiFePO4细胞的容量保留率从36.5%提高到89.4%.
- 对称的细胞在800多个小时内表现出稳定的运行.
结论:
- 2-F-5-IPy是一种高效的电解质添加剂,可提高金属电池的性能.
- 稳定的SEI形成和增强的利用有助于卓越的循环稳定性和容量保留.
- 这种添加剂为推进金属电池的实际应用提供了一个有前途的战略.
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