应变诱导的结晶和相分离用于制造一个坚硬而硬的滑环固体聚合物电解质
Kei Hashimoto1,2,3, Toru Shiwaku1, Hiroyuki Aoki4,5
1Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
Science advances
|November 24, 2023
概括
这项研究介绍了用于可穿戴设备的坚固的滑动环固体聚合物电解质 (SR-SPE). 它在不损害离子导电性的情况下达到高刚性和性,使用应变诱导结晶和相分离.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电化学工程 电化学工程
背景情况:
- 机械坚固的聚合物电解质对于可穿戴设备等先进应用至关重要.
- 高的模量 (刚度) 和断裂能量 (性) 是电解质可靠性的关键,防止短路和抵抗裂传播.
- 一个重大挑战是高刚性聚合物电解质的脆性.
研究的目的:
- 设计一种新的坚固的滑环固体聚合物电解质 (SR-SPE),可以克服刚性-性权衡.
- 研究应变诱导结晶 (SIC) 和相分离对机械性质和离子导电性的联合影响.
- 展示一种开发机械上优越的聚合物电解质的新策略.
主要方法:
- 使用应变诱导结晶 (SIC) 和相分离,制造一个滑环固体聚合物电解质 (SR-SPE).
- 机械性质的表征,包括Young的模量和破裂能量.
- 对离子导电性的评估,以确保性能不会受到损害.
主要成果:
- 开发的SR-SPE具有很高的性,由于SIC,其破裂能量为80至100MJ/m3.
- 阶段分离有助于增强刚性,Young的模量在10到70MPa之间.
- 结合的机制使SR-SPE变得坚硬而硬,而不会对离子导电性产生负面影响.
结论:
- 新型SR-SPE成功地平衡了刚性和性,解决了当前聚合物电解质的关键限制.
- 结合应变诱导结晶和相分离的战略为开发先进的聚合物电解质提供了一个有前途的途径.
- 这种方法有可能在坚固的聚合物凝材料和储能装置中得到更广泛的应用.
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