聚酰亚胺
阴极
材料科学
电池(电)
酰亚胺
锂(药物)
电化学
钾
试剂
化学工程
电极
高分子化学
纳米技术
有机化学
化学
冶金
物理化学
图层(电子)
内分泌学
功率(物理)
工程类
物理
医学
量子力学
作者
Roman R. Kapaev,Alexey G. Scherbakov,Alexander F. Shestakov,Keith J. Stevenson,Pavel A. Troshin
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2021-03-03
卷期号:4 (5): 4465-4472
被引量:21
标识
DOI:10.1021/acsaem.1c00092
摘要
Organic compounds have recently gained significant attention as materials for the next generation of sustainable energy storage devices. Polyimides are one of the most attractive types of organic battery cathode materials, especially if they are produced from easily accessible, inexpensive reagents. However, these polymers are still at the early stage of development for rechargeable metal-ion batteries. Particularly, the scope of amine building blocks that were used for the polyimide synthesis remains scarce. In this study, we propose m-phenylenediamine as a building block for polyimide-based cathode materials. We report the electrochemical properties of polyimides obtained from 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) and m- or p-phenylenediamines for lithium-, sodium-, and potassium-ion batteries; and show that the m-polyimide has several advantages over the p-isomer. It has larger capacities and superior high-rate capabilities, owing to a higher specific surface area and smaller particle size. In sodium- and potassium-based batteries, the redox potentials of the m-isomer are higher because of the spatial arrangement of adjacent imide units, which makes chelation of metal cations more energetically favorable. These results provide an impetus for designing new polyimide-based battery materials with higher energy density and fast charge–discharge kinetics.
科研通智能强力驱动
Strongly Powered by AbleSci AI