一种有分支的气结合交联无无水性结合剂,用于高度稳定的离子电池
Jiangxiong Deng1, Qiulin Li1, Yang Xiang1
1School of Materials and Energy, Southwest University, Chongqing 400715, PR China; Chongqing Key Lab for Battery Materials and Technologies, Southwest University, Chongqing 400715, PR China.
Journal of colloid and interface science
|August 19, 2025
概括
一种新的无,水性粘合剂,碳氧化奇托共聚合物 (CMA),提高了离子电池的性能和可回收性. 这种环保的粘合剂提高了电极的稳定性和电极和阳极的容量保留.
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
- 可持续化学 可持续化学
背景情况:
- 聚乙烯化物 (PVDF) 是离子电池 (LIB) 的标准粘合剂,但具有环境和性能限制.
- PVDF结合剂带来了诸多挑战,包括使用有毒溶剂,粘合性差,灵活性低,不能回收利用等.
研究的目的:
- 为LIBs开发一种新的,环保的,无的粘合剂.
- 在LIBs中解决传统PVDF结合剂的局限性.
- 为了提高电极结构完整性,电化学稳定性和电池可回收性.
主要方法:
- 一种共聚合物粘合剂的合成:烯胺 (AM) 和伊塔康酸 (IA) 接种的碳酸化奇托 (CS) (CMA).
- 描述CMA的三维联交联网的特征.
- 在LIBs中测试CMA作为铁酸盐 (LFP) 阴极和 (Si) 阳极的粘合剂.
- 评估粘合剂性能,包括容量保留和循环稳定性.
- 评估CMA的pH响应可回收性,用于电极材料分离.
主要成果:
- 在LFP阴极中,CMA粘合剂表现出卓越的性能,在0.5C的400个循环后达到96.55%的容量保留.
- 与PVDF相比,CMA粘合剂在Si阳极中表现优越,在0.2C的100个循环后,容量保持率为85.2%.
- 粘合剂的独特结构改善了机械性能,减少了应力度,并提高了循环稳定性.
- CMA具有pH响应的可回收性,可促进高效的电极组件分离.
结论:
- 开发的CMA绑定器为LIBs提供了一个可持续和高性能的PVDF替代方案.
- 通过提高电极完整性,CMA提高了电池的寿命和稳定性.
- 粘合剂的可回收性促进了电池行业的可持续制造实践.
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