A self-supporting zinc negative electrode preparation
CN116031359BActive Publication Date: 2026-10-16BEIJING INST OF TECH
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Patent Information
- Application Number
- CN202211727994.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-29
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2042-12-29
AI Technical Summary
Technical Problem
但是水系锌电池也尤其固有的问题，在循环过程中稳定性较差，在金属锌负极附近会产生枝晶生长，造成负极极化增大、容量衰减，刺穿隔膜引起短路；析氢副反应的发生，导致库伦效率较低，电池失效，另外直接使用金属锌往往会造成过多的无效锌，导致电池能量密度偏低，降低锌电池的市场竞争力
Benefits of technology
[0020] 1. The above-mentioned solution of the present invention uses commercial carbon film as a substrate and increases the adsorption active sites of zinc ions by nitrogen doping, thereby achieving uniform zinc deposition and inhibiting dendrite growth.
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Abstract
The application relates to the field of aqueous zinc ion batteries, in particular to a preparation method of an N-doped conductive carbon film self-supporting zinc negative electrode and application thereof. The preparation method is as follows: a commercial conductive carbon film is calcined at low temperature in an ammonia gas environment to realize N doping; and uniform zinc ion deposition is induced. The self-supporting zinc negative electrode can quantitatively control zinc content, reduce the N / P ratio of a full battery, and improve the energy density. Meanwhile, the conductive substrate can make zinc ion deposition more uniform, inhibit zinc dendrite growth, improve the cycle stability of the zinc ion battery, and has a very broad application prospect in the field of aqueous zinc ion batteries.
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