Structurally-supported PtCuCo nanoframes as efficient bifunctional catalysts for oxygen reduction and methanol oxidation reactions

Yangyang Ren; Zehao Zang; Chenhao Lv; Beibei Li; Lanlan Li; Xiaojing Yang; Zunming Lu; Xiaofei Yu; Xinghua Zhang

doi:10.1016/j.jcis.2023.03.026

Structurally-supported PtCuCo nanoframes as efficient bifunctional catalysts for oxygen reduction and methanol oxidation reactions

J Colloid Interface Sci. 2023 Jun 15:640:801-808. doi: 10.1016/j.jcis.2023.03.026. Epub 2023 Mar 7.

Authors

Yangyang Ren¹, Zehao Zang¹, Chenhao Lv¹, Beibei Li¹, Lanlan Li¹, Xiaojing Yang¹, Zunming Lu¹, Xiaofei Yu², Xinghua Zhang³

Affiliations

¹ School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China.
² School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China. Electronic address: yuxiaofei@hebut.edu.cn.
³ School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China. Electronic address: zhangxinghua@hebut.edu.cn.

PMID: 36905889
DOI: 10.1016/j.jcis.2023.03.026

Abstract

Developing highly durable and active catalysts with the morphology of structurally robust nanoframes toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) in acidic environment is crucial but still a great challenge to completely achieve in a single material. Herein, PtCuCo nanoframes (PtCuCo NFs) with internal support structures as enhanced bifunctional electrocatalysts were prepared by a facile one-pot approach. PtCuCo NFs exhibited remarkable activity and durability for ORR and MOR owing to the ternary compositions and the structure-fortifying frame structures. Impressively, the specific/mass activity of PtCuCo NFs were 12.8/7.5 times as large as that of commercial Pt/C for ORR in perchloric acid solution. For MOR in sulfuric acid solution, the mass/specific activity of PtCuCo NFs was 1.66 A mg_Pt^-1/4.24 mA cm^-2, which was 5.4/9.4 times as large as that of Pt/C. This work may provide a promising nanoframe material to develop dual catalysts for fuel cells.

Keywords: Bifunctional electrocatalysts; Methanol oxidation reaction; Nanoframes; Oxygen reduction reaction; Pt-based nanocrystals.