Nitroxide radical cathode material with multiple electron reactions

• 作者: Huanhuan Dong Shuo Zhao Xuesen Hou Liubin Wang Haixia Li Fujun Li
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（7）
• 页码范围: 110-114
• 页数: 5页
• 语种: 英文

摘要

Organic materials with redox-active centers are regarded as promising candidates for rechargeable batteries in recent years for their light weight, low cost, environmental friendliness and structural diversity [1-4].Organic materials, such as conducting polymers (polyacetylene, polypyrrole, polyaniline, etc.) [5], conjugated carbonyl compounds (quinone compounds, imides, etc.)[6-9] and nitroxide radical (N-O.) [10,11] compounds have been attempted as cathode materials in lithium-ion batteries (LIBs).Due to the good chemical stability, high operation voltage, high rate capability and small structure changes, the N-O.materials have attracted tremendous attention since 2002 [12-15].The N-O.generally undergoes two-electron redox reactions, which can be oxidized to oxoammonium (p-type reaction) and reduced to aminoxy (n-type reaction).However, the n-type reaction is irreversible for most of N-O.compounds and realizing the reversibility of the n-type reaction of TEMPO will promote the energy density.