Unveiling the enhanced electrocatalytic activity at electrochemically synthesized Pt-WOx hybrid nanostructure interfaces

Lee Seul Oh; Ju Ye Kim; Hyun Woo Kim; Jeonghyun Han; Eunho Lim; Won Bae Kim; Jong Hyeok Park; Hyung Ju Kim

doi:10.1039/d1cc04535k

Unveiling the enhanced electrocatalytic activity at electrochemically synthesized Pt-WO_x hybrid nanostructure interfaces

Chem Commun (Camb). 2021 Oct 26;57(85):11165-11168. doi: 10.1039/d1cc04535k.

Authors

Lee Seul Oh^{1

2}, Ju Ye Kim¹, Hyun Woo Kim³, Jeonghyun Han^{1

4}, Eunho Lim¹, Won Bae Kim⁴, Jong Hyeok Park², Hyung Ju Kim^{1

5}

Affiliations

¹ Chemical & Process Technology Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea. hjkim@krict.re.kr.
² Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea.
³ Chemical Data-Driven Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea.
⁴ Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, South Korea.
⁵ Advanced Materials and Chemical Engineering, University of Science and Technology (UST), 113 Gwahangno, Yuseong-gu, Daejeon 34113, South Korea.

PMID: 34570149
DOI: 10.1039/d1cc04535k

Abstract

Here we report a simple synthesis strategy for Pt-WO_x hybrid nanostructures using a metal-dissolution-based electrodeposition technique. The hybrid nanostructures demonstrate an excellent catalytic hydrogen evolution reaction performance with an approximately 17 times higher Pt mass activity and a 7.4 times higher turnover frequency than those of commercial Pt catalysts. The enhanced electrocatalytic performance is related to the creation of Pt-WO_x interfacial sites.