一种介孔氟掺杂碳材料的制备方法和应用
By preparing mesoporous fluorine-doped carbon materials, the problem of sulfation of the negative electrode in lead-acid batteries was solved, hydrogen evolution reaction was suppressed, battery life was extended, and battery performance was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2022-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
In lead-acid batteries, severe sulfation occurs on the negative electrode surface during high-rate partial charging, leading to a sharp decrease in cycle capacity. Existing carbon material doping cannot effectively suppress hydrogen evolution reaction, thus affecting battery life.
Fluorine-doped carbon materials are prepared by copolymerization of carbon source, hexamethylenetetramine and fluorine-containing monomers. The electronegativity of fluorine atoms is used to suppress hydrogen evolution reaction, and nonionic surfactants are used to regulate pore size and form Lewis acid sites to extend battery life.
It significantly suppresses hydrogen evolution reaction, improves the cycle stability and charge-discharge reversibility of lead-carbon batteries, extends battery life, reduces hydrogen evolution rate, and improves coulombic efficiency.
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