US 12,482,817 B1
Zinc powder anode material, preparation method therefore, and zinc-ion battery
Jingwei Wang, Guangdong (CN); Shukui Li, Guangdong (CN); and Junye Cheng, Guangdong (CN)
Assigned to Shenzhen North University Moscow University, Shenzhen (CN)
Filed by Shenzhen North University Moscow University, Guangdong (CN)
Filed on Mar. 14, 2025, as Appl. No. 19/080,773.
Claims priority of application No. 202410911708.6 (CN), filed on Jul. 9, 2024.
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/054 (2010.01)
CPC H01M 4/366 (2013.01) [H01M 4/38 (2013.01); H01M 4/624 (2013.01); H01M 10/054 (2013.01); H01M 2004/021 (2013.01)] 6 Claims
 
1. A preparation method for a zinc powder anode material, comprising the following steps:
providing zinc powder and a conductive material, wherein the conductive material is poly (3,4-ethylenedioxythiophene), and an average particle size of the zinc powder is 0.1-25 μm;
dispersing the zinc powder and the conductive material in a solvent to obtain a mixed solution; performing ball milling of the mixed solution;
transferring a ball-milled mixed solution to a sealed container, heating the ball-milled mixed solution to a target temperature, stopping heating, introducing carbon dioxide into the sealed container, stopping introducing carbon dioxide when a pressure in the sealed container reaches a target pressure, and leaving the ball-milled mixed solution to stand for a preset time, wherein carbon dioxide reaches a supercritical state at the target pressure and the target temperature; and
sequentially performing depressurizing, cooling, coating, and drying to obtain the zinc powder anode material, wherein the zinc powder anode material comprises zinc powder and a coating layer coated on a surface of the zinc powder, and the coating layer is made of a conductive material.