具有高离子导电性的结晶胺共价有机框架
Yiming Hu1, Nathan Dunlap2, Shun Wan3
1Department of Chemistry , University of Colorado , Boulder , Colorado 80309 , United States.
Journal of the American Chemical Society
|April 16, 2019
概括
研究人员为固态电解质开发了新的含有伊米达酸盐的离子共价有机框架 (ICOF). 这些ICOF具有高离子导电性和低激活能量,为先进的固态电池铺平了道路.
科学领域:
- 材料科学
- 电化学
- 聚合物化学
背景情况:
- 离子共价有机框架 (ICOF) 正成为固态电解质的先进材料.
- 开发高效的固态电解质对于下一代储能设备至关重要.
研究的目的:
- 报告第一系列含有晶体的imidazolate的ICOF作为单离子导电的固体电解质材料.
- 调查影响这些ICOF中的离子导电性的结构属性关系.
主要方法:
- 含有晶体的伊米达酸的合成.
- ICOF结构和多孔框架的特征.
- 测量离子传导和激活能量.
主要成果:
- 达到高离子导电性 (高达7.2 × 10−3 S cm−1) 和低激活能量 (0.10 eV).
- 证实了弱离子 - 胺酸结合和明确的多孔结构增强了离子传输.
- 通过削弱离子对相互作用, 提取电子的替代剂显著提高了离子导电性.
结论:
- 含有伊米达酸盐的ICOF是一种新型的高效单离子导电固体电解质.
- 这些ICOF为开发全固态电解装置的材料提供了一个有前途的自下而上的方法.
- 定制替代电子属性是优化ICOF中的离子导电性的有效策略.
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