PdCu Bimetallene for Enhanced Oxygen Reduction Electrocatalysis

Ziqiang Wang; Pengjun Tian; Hugang Zhang; Kai Deng; Hongjie Yu; You Xu; Xiaonian Li; Hongjing Wang; Liang Wang

doi:10.1021/acs.inorgchem.3c00174

PdCu Bimetallene for Enhanced Oxygen Reduction Electrocatalysis

Inorg Chem. 2023 Apr 10;62(14):5622-5629. doi: 10.1021/acs.inorgchem.3c00174. Epub 2023 Mar 25.

Authors

Ziqiang Wang¹, Pengjun Tian¹, Hugang Zhang¹, Kai Deng¹, Hongjie Yu¹, You Xu¹, Xiaonian Li¹, Hongjing Wang¹, Liang Wang¹

Affiliation

¹ State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China.

PMID: 36964752
DOI: 10.1021/acs.inorgchem.3c00174

Abstract

Engineering two-dimensional (2D) metallic nanomaterials has attracted numerous research interests for oxygen reduction reaction (ORR) due to their highly exposed unsaturated metal atoms and excellent physicochemical properties. Herein, we report a CO-confined growth strategy for the synthesis of 2D PdCu bimetallene with several atomic layers for ORR. The incorporation of Cu into Pd metallene can generate strain effect and change the electronic structure, weakening the interaction between Pd and CO and suppressing the adsorption of CO. Therefore, the synthesized PdCu bimetallene exhibits remarkable catalytic performance for alkaline ORR, with mass and specific activities of 0.82 A mg_Pd^-1 and 1.01 mA cm^-2, which are 5.1 and 3.7 times those for Pt/C, respectively. Meanwhile, the PdCu bimetallene shows no decrease in ORR activity after 5000 cycles. This work highlights the design of ultrathin bimetallic 2D nanomaterials for efficient ORR electrocatalysis.