US 12,015,160 B2
Nanowire catalyst for fuel cell and method of manufacturing same
Dong Yoon Shin, Yongin-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Dec. 10, 2021, as Appl. No. 17/547,609.
Claims priority of application No. 10-2021-0081234 (KR), filed on Jun. 23, 2021.
Prior Publication US 2022/0416257 A1, Dec. 29, 2022
Int. Cl. H01M 4/88 (2006.01); H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 4/92 (2006.01)
CPC H01M 4/8885 (2013.01) [H01M 4/8605 (2013.01); H01M 4/8882 (2013.01); H01M 4/9041 (2013.01); H01M 4/92 (2013.01); H01M 4/926 (2013.01)] 15 Claims
 
1. A method of manufacturing a nanowire catalyst for a fuel cell, the method comprising:
preparing a first mixture by mixing a first polymer precursor and a first metal precursor in a first solvent;
preparing a second mixture by adding a second polymer precursor to the first mixture;
electrospinning the second mixture; and
heat-treating a resultant product resulting from the electrospinning;
wherein the heat-treating of the resultant product resulting from the electrospinning comprises:
subjecting the resultant product resulting from the electrospinning to a primary heat treatment for pyrolysis of the second polymer precursor; and
subjecting a resultant product resulting from the pyrolysis to a secondary heat treatment for carbonization in a reducing atmosphere;
wherein the primary heat treatment is performed at a temperature of 550° C. to 650° C. in an air atmosphere; and
wherein the secondary heat treatment is performed at a temperature of 200° C. to 300° C. in the reducing atmosphere comprising hydrogen.