US 12,330,143 B2
Support-nanoparticle composite, catalyst containing same, and fabrication method therefor
Wonkyun Lee, Daejeon (KR); Sang Hoon Kim, Daejeon (KR); Gyo Hyun Hwang, Daejeon (KR); Jun Yeon Cho, Daejeon (KR); Kwanghyun Kim, Daejeon (KR); and Ran Choi, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 16/631,097
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Sep. 11, 2018, PCT No. PCT/KR2018/010615
§ 371(c)(1), (2) Date Jan. 14, 2020,
PCT Pub. No. WO2019/054722, PCT Pub. Date Mar. 21, 2019.
Claims priority of application No. 10-2017-0116264 (KR), filed on Sep. 12, 2017; and application No. 10-2018-0079687 (KR), filed on Jul. 10, 2018.
Prior Publication US 2020/0164352 A1, May 28, 2020
Int. Cl. B01J 31/06 (2006.01); B01J 21/18 (2006.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); B82Y 30/00 (2011.01); C25B 11/057 (2021.01); C25B 11/073 (2021.01); H01M 4/66 (2006.01); B82Y 40/00 (2011.01)
CPC B01J 31/06 (2013.01) [B01J 21/18 (2013.01); B01J 37/0221 (2013.01); B01J 37/08 (2013.01); B82Y 30/00 (2013.01); C25B 11/057 (2021.01); C25B 11/073 (2021.01); H01M 4/663 (2013.01); B82Y 40/00 (2013.01); H01M 4/667 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A carrier-nanoparticle complex in an electrochemical cell or in a fuel cell, comprising:
a carbon carrier comprising carbon black;
a polymer layer provided on a surface of the carbon carrier, the polymer layer comprising polymer having a pyridine group at a side chain thereof; and
metal nanoparticles provided on the polymer layer,
wherein the polymer having the pyridine group at the side chain thereof comprises poly (4-vinyl pyridine) (P4VP),
wherein 50% to 100% of a surface of the carbon carrier is provided with the polymer layer,
wherein the metal nanoparticles comprise platinum,
wherein the metal nanoparticles have an average particle diameter of 2 nm to 20 nm,
wherein a content of the metal nanoparticles is 20 wt % to 70 wt % based on a total weight of the carrier-nanoparticle complex,
wherein BET value of the carbon carrier is 70m2/g to 250m2/g,
wherein a platinum particle supporting ratio on the carrier-nanoparticle complex is 75.3% to 84.3%, and
wherein the particle supporting ratio (%) is according to Equation 1:
Particle supporting ratio (%)=Actual supported amount×100/Target supported amount  [Equation 1]
wherein the actual supported amount is a content of Pt measured by an ICP analysis, and the target supported amount is a value calculated through the weight of a precursor used as compared to the total weight of the carrier-nanoparticle complex.