一种弹性导电介层,用于高性能LATP基金属电池
Zhisong Geng1, Yingqi Sun1, Qing Zhang1
1MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|June 10, 2024
概括
一种新的化化化化化丁 (F-HNBR) 介层增强了金属电池. 这种灵活的缓冲层提高了循环寿命,并在室温下实现了高性能运行.
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
- 聚合物科学 聚合物科学
背景情况:
- 金属电池面临的挑战是接口阻抗和体积变化.
- 固态电解质如Li{1+x) Al{x) Ti{2-x) {PO4) 3 (LATP) 需要有效的缓冲层.
- 现有的中间层往往缺乏必要的弹性和稳定性.
研究的目的:
- 开发一种弹性体导电介层,以解决LATP电池的局限性.
- 为了提高接口稳定性和适应金属电池的体积变化.
- 为了提高基于LATP的电池的整体性能和循环寿命.
主要方法:
- 制造一种化化化化化丁烯 (F-HNBR) 基质.
- 利用化,蒸汽相化和塑化进行层间合成.
- 将F-HNBR中间层集成到基于LATP的对称和全细胞中.
主要成果:
- F-HNBR中间层表现出高弹性 (423%),耐疲劳性 (10,000 个循环) 和离子导电性 (6.3 × 10^-4 S cm^-1).
- 基于LATP的对称电池实现了1600小时的0.1 mA cm^-2稳定循环和0.5 mAh cm^-2的深循环.
- 完整的电池表现出500个周期,容量保留98.3%,并且在室温下支持高质量加载阴极 (11.1 mg cm^-2).
结论:
- F-HNBR中间层有效地减轻了LATP金属电池中的接口问题.
- 这种灵活,坚固的中间层显著提高了电池周期寿命和稳定性.
- 开发的中间层使先进的金属电池能够在室温下高性能运行.
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