溶解结构调节诱导 LiF/Li3 N-丰富的 CEI 和 SEI 接口用于高级 Li/CFx电池
Ping Li1, Zhe Cheng1, Jialu Liu1
1The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|August 23, 2023
概括
C5F5N通过改进电极/电解质接口来提高电池的性能. 这种添加剂提高了容量,速率能力和存储稳定性,为电池开发提供了新的策略.
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
背景情况:
- 电极/电解质接口极大地影响电池中的电化学反应动力学.
- 严重的极化和电压歇斯底里是电池初级电池性能的主要挑战.
研究的目的:
- 研究C5F5N作为用于调电极/电解质接口的电解质添加剂.
- 为了提高Li/CFx初级电池的电化学性能和稳定性.
主要方法:
- 使用C5F5N作为Li/CFx主电池中的电解质添加剂.
- 评估电化学性能,包括排放特定容量,高速率能力,能量/功率密度和存储性能.
- 分析了电极/电解质接口,以了解性能改进.
主要成果:
- 使用C5F5N添加剂的Li/CFx电池实现了981.4 mAh g−1 (0.1 C) 放电能力和598 mAh g−1 (15 C) 高速能力.
- 证明了卓越的能量/功率密度 (1068.7 Wh kg-1 / 24362.5 W kg-1) 和卓越的存储性能 (717.2 mAh g-1在55 °C下2个月后).
- C5F5N诱导了稳定的Li3N/LiF丰富的同质接口,改善了Li+流量,动力学和速率能力.
结论:
- C5F5N是一种有前途的电解质添加剂,可显著提高Li/CFx主电池的性能.
- 通过添加剂进行电极/电解质接口工程是提高电池初级电池性能的有效策略.
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