	US 12,206,116 B2
	Carbon support for fuel cell catalyst and method of manufacturing the same
Ji Hoon Yang, Gyeonggi-do (KR); Jin Seong Choi, Gyeonggi-do (KR); Kook Il Han, Gyeonggi-do (KR); Geon Hee Cho, Uijeongbu-si (KR); Jin Woo Lee, Daejeon (KR); and Ah Ryeon Lee, Daejeon (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed on Mar. 30, 2021, as Appl. No. 17/217,987.
Claims priority of application No. 10-2020-0171545 (KR), filed on Dec. 9, 2020.
Prior Publication US 2022/0181644 A1, Jun. 9, 2022
Int. Cl. H01M 4/92 (2006.01); H01M 4/90 (2006.01)

CPC H01M 4/926 (2013.01) [H01M 4/9083 (2013.01)]

10 Claims

1. A method of manufacturing of a carbon support for a fuel cell catalyst, comprising:

pretreating a conductive carbon support with an acid solution;

preparing an admixture comprising 1) the pretreated conductive carbon support and 2) an organic material containing nitrogen (N); and

heat-treating the admixture,

wherein the heat-treating is performed at a temperature ranging from 750° C. to 850° C.,

wherein, in the pretreating, the pretreatment is performed at a temperature ranging from 130° C. to 150° C. for one to two hours,

wherein an interior of the carbon support is doped with nitrogen (N), and the N is present in a form of pyridinic N, pyrrolic N and graphitic N,

wherein amount of the pyridinic N or the pyrrolic N is greater than the graphitic N,

and

wherein a content ratio of the pyridinic N/the pyrrolic N ranges from 0.50 to 1.30.