高导电性和稳定的复合聚合物电解质与化纳米管用于全固态金属电池
Qian He1, Xiongxiong Liu2, Guang Xiao1
1National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
Small (Weinheim an der Bergstrasse, Germany)
|July 15, 2024
概括
这项研究介绍了一种全固态金属电池的新型复合物固体电解质. 该材料增强了离子导电性和电池性能,为更安全的下一代能源存储铺平了道路.
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
- 纳米技术纳米技术
背景情况:
- 全固态金属电池 (ASSLMBs) 是下一代能源存储的前景.
- 在室温下固体电解质的低离子导电率阻碍了ASSLMB的发展.
研究的目的:
- 开发一种具有增强离子导电性的多功能复合固体电解质 (CSE).
- 提高ASSLMB的性能和安全.
主要方法:
- 将化纳米管 (BNNT) 纳入聚乙烯化-六烯 (PVDF-HFP) 中,以创建一个CSE.
- 在ASSLMB中CSE的离子导电性,Li+转移数和电化学性能的表征.
- 评估复合电解质的导热性和阻燃性.
主要成果:
- 在室温下,PVDF-HFP/BNNT复合物实现了8.0 × 10^-4 S cm^-1的离子导电性.
- 在Li//Li对称电池 (3400小时) 和ASSLMB中表现出强大的循环性能 (在850个循环后保持93.2%的容量).
- 复合固体电解质的增强导热性和阻燃性.
结论:
- 开发的PVDF-HFP/BNNT复合体固体电解质显著提高了ASSLMB中的离子导电性和电化学性能.
- BNNTs促进Li+运输,并提高固体电解质的整体稳定性和安全性.
- 这项工作提出了推进高性能和安全固态电池的可行战略.
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