Preparation method of bipolar covalent organic framework material and application thereof in lithium ion battery

By preparing bipolar covalent organic framework materials and combining specific groups and fluxes, the problems of low voltage plateau and insufficient specific capacity of COFs cathode materials have been solved, realizing high voltage and high specific capacity of high-performance lithium-ion batteries. Moreover, the solvent-free method is green and environmentally friendly, making it suitable for industrialization.

CN122404702APending Publication Date: 2026-07-17NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Filing Date
2026-04-16
Publication Date
2026-07-17

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Abstract

本发明属于电极材料技术领域，具体涉及一种双极型共价有机框架电极材料制备方法及其在锂离子电池中的应用，采用固相助熔合成的方法制备了同时具有p型和n型两种活性位点，并富含羰基C=O和三苯胺C‑N基团的双极型共价有机框架材料，将其作为锂离子电池正极材料的氧化还原电位平台最低为2.46 V，最高达3.94 V。
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