Zinc electrode surface modification method based on 1H-tetrazole and application of zinc electrode surface modification method in aqueous zinc battery
By chemically etching the zinc electrode with 1H-tetrazole solution to form a porous ordered array structure, the problem of surface roughness of the zinc negative electrode is solved, and the efficiency, long life and safety performance of the zinc battery are improved.
CN121938831APending Publication Date: 2026-04-28TIANFU JIANGXI LAB
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Patent Information
- Application Number
- CN202610124680.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-04-28
AI Technical Summary
Technical Problem
The roughness and inhomogeneity of the zinc anode surface lead to uncontrollable growth of zinc dendrites, affecting the cycle life and safety performance of the battery. Existing modification strategies are difficult to achieve efficient and controllable surface morphology regulation.
Method used
The zinc electrode was chemically etched using 1H-tetrazole solution. This selective etching process formed a porous, ordered array structure, which controlled the zinc surface morphology and provided a uniform deposition substrate.
Benefits of technology
It significantly inhibits zinc dendrite growth, increases battery cycle life by 40 times, increases effective surface area, provides more deposition sites, improves ion transport, and enhances battery performance.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a zinc electrode surface modification method based on 1H-tetrazole and application of the zinc electrode surface modification method in an aqueous zinc battery. The modification method comprises the step of immersing the zinc electrode into a 1H-tetrazole aqueous solution (NIM) for chemical corrosion treatment. The corrosion process utilizes the mild acidity and coordination ability of-NH-groups in 1H-tetrazole molecules to realize preferential etching of a convex region on the zinc surface, so that the surface roughness is effectively reduced, and a uniform deposition substrate is formed. When the modified zinc negative electrode is applied to an aqueous zinc battery, the growth of zinc dendrites can be remarkably inhibited, side reactions are reduced, stable circulation of more than 4000 hours is realized under the conditions of 0.5 mA / cm < 2 > and 0.5 mAh / cm < 2 >, and the cycle life is prolonged by more than 40 times compared with that of an untreated zinc negative electrode. The method disclosed by the invention is simple and convenient in process, mild in condition and environment-friendly, and provides an effective solution for the negative electrode design of the high-performance and long-service-life aqueous zinc battery.
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