可加工和可回收的共价有机框架凝电解质
Zhiwen Fan1, Juntao Tang1, Wei Zhang2
1College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|April 25, 2025
概括
研究人员通过操纵层间相互作用来开发可加工的共价有机框架 (COF) 凝电解质. 这一突破使COF材料的解决方案加工和回收用于可持续的储能应用.
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
- 聚合物化学 聚合物化学
背景情况:
- 由于它们的有序结构,共价有机框架 (COF) 显示出对能量存储的希望.
- 不溶性和不化的可加工性阻碍了COF的实际应用.
- 开发可加工的COF凝电解质并使其回收成为一个重大挑战.
研究的目的:
- 开发一种方法来处理基于COF的凝电解质.
- 为了使COF凝电解质的溶液重建和循环利用.
- 克服COF中不可溶性和不可化的加工能力的局限性.
主要方法:
- 操纵COF内部的层间相互作用,使用式灵感原理.
- 将氧原子引入COF框架,以提高酸性介质中的溶液可加工性.
- 在三酸 (TFA) 水溶液中将COF粉末分散为合物纳米片.
- 调节TFA,COF和水之间的竞争性相互作用,以控制COF状态 (凝结与分散).
主要成果:
- 在强酸介质中实现了COF粉末的良好的溶液加工性.
- 成功地在凝化和合分散状态之间重新配置了COF材料.
- 证明重新配置的COF凝电解质在电池中保持机械性能并表现出长周期寿命 (>800小时).
- 实现了COF粉末的溶液加工,并使COF从重复使用的凝中回收.
结论:
- 这项研究提出了一种新的方法,通过溶液重建来处理基于COF的凝电解质.
- 开发的方法克服了COF固有的不溶性和不化的可加工性.
- 这些发现为能源存储应用中COF的制备和可持续回收提供了新的策略.
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