US 12,482,831 B2
Nitrogen-doped graphitized carbon material and preparation method
Rongyue Wang, Foshan (CN); Xuanxuan Bi, Jining (CN); and Zhongwei Chen, Dalian (CN)
Assigned to GRINM (Guangdong) Institute for Advanced Materials and Technology, Foshan (CN)
Filed by GRINM (Guangdong) Institute for Advanced Materials and Technology, Foshan (CN)
Filed on Jan. 13, 2025, as Appl. No. 19/017,805.
Application 19/017,805 is a continuation of application No. PCT/CN2024/140160, filed on Dec. 18, 2024.
Claims priority of application No. 202311819945.1 (CN), filed on Dec. 27, 2023.
Prior Publication US 2025/0233166 A1, Jul. 17, 2025
Int. Cl. H01M 4/90 (2006.01)
CPC H01M 4/9083 (2013.01) 10 Claims
OG exemplary drawing
 
1. A preparation method of a nitrogen-doped graphitized carbon material, comprising the following steps:
adding graphitized carbon, pyrrole, concentrated hydrochloric acid and a non-noble metal ion compound into water sequentially in that order and mixing uniformly to obtain a mixture, and finally adding an ammonium persulfate solution into the mixture to obtain a mixing solution to thereby prepare polypyrrole-coated graphitized carbon, and performing high-temperature annealing treatment and washing on the polypyrrole-coated graphitized carbon to prepare the nitrogen-doped graphitized carbon material;
wherein the non-noble metal ion compound is one or more than two of chloride, acetate, nitrate and oxide containing non-noble metal ions; and
wherein the non-noble metal ions comprise one selected from the group consisting of cobalt ions, iron ions, nickel ions, manganese ions, zinc ions, and molybdenum ions.