Preparation method of zinc-based electrode material, zinc-based electrode and zinc-nickel secondary battery

Through the coordination reaction of foaming agent and bismuth ammonium citrate and zinc nitrate, a zinc-based electrode material with a graded porous structure was prepared, which solved the problem of cumbersome preparation and insufficient performance of zinc negative electrode materials of zinc-nickel secondary batteries, and achieved high specific capacity, long cycle life and high rate performance, which was suitable for the industrialization of zinc-nickel secondary batteries.

CN120453362APending Publication Date: 2025-08-08CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
1 Cites 0 Cited by

Patent Information

Application Number
CN202510577501.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-06
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

The existing zinc-nickel secondary battery zinc anode materials have cumbersome preparation process and harsh preparation conditions. The prepared materials cannot meet the comprehensive electrochemical properties of high specific capacity, long cycle life and high magnification at the same time, which hinders its development.

Method used

The foaming agent and ammonium bismuth citrate and zinc nitrate coordinate reaction in solution are used to generate uniformly dispersed bismuth and zinc oxide to form a conductive carbon layer. By controlling the thickness and bismuth content of the carbon coating layer, a zinc-based electrode material with a graded porous structure is prepared.

Benefits of technology

It improves the specific surface area and electron transfer rate of the electrode material, suppresses electrode deformation and dendritic growth, enhances charge transfer efficiency and cyclic stability, simplifies the preparation process, reduces equipment requirements and costs, and is suitable for industrialization.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a preparation method of a zinc-based electrode material, and the preparation method comprises the following steps: stirring and dissolving a foaming agent, zinc nitrate and ammonium bismuth citrate in a deionized water solvent at room temperature, dropwise adding nitric acid to obtain a uniform solution, and drying the solution at the temperature of 80-120 DEG C to obtain a precursor; and reacting the precursor in a protective gas at the temperature of 450-600 DEG C to obtain the electrode material. The zinc-based electrode material prepared by the method has the electrochemical properties of high specific capacity, long cycle life and high magnification, the preparation process is simple and not tedious, the equipment requirement is low, the reaction condition is easy to control, the preparation period is short, and the method is suitable for industrialization.
Need to check novelty before this filing date? Find Prior Art