PtFeCoNiCu high-entropy solid solution alloy as highly efficient electrocatalyst for the oxygen reduction reaction.

iScience

Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, PR China.

Published: January 2023

Searching for an efficient, durable, and low cost catalyst toward oxygen reduction reaction (ORR) is of paramount importance for the application of fuel cell technology. Herein, PtFeCoNiCu high-entropy alloy nanoparticles (PFCNC-HEA) is reported as electrocatalyst toward ORR. It shows remarkable ORR catalytic mass activity of 1.738 A mg at 0.90 V, which is 15.8 times higher than that of the state-of-art commercial Pt/C catalyst. It also exhibits outstanding stability with negligible voltage decay (3 mV) after 10k cycles accelerated durability test. High ORR activity is ascribed to the ligand effect caused by polymetallic elements, the optimization of the surface electronic structure, and the formation of multiple active sites on the surface. In the proton exchange membrane fuel cell setup, this cell delivers a power density of up to 1.380 W cm with a cathodic Pt loading of 0.03 mg cm, demonstrating a promising catalyst design direction for highly efficient ORR.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9860490PMC
http://dx.doi.org/10.1016/j.isci.2022.105890DOI Listing

Publication Analysis

Top Keywords

ptfeconicu high-entropy
8
highly efficient
8
oxygen reduction
8
reduction reaction
8
fuel cell
8
orr
5
high-entropy solid
4
solid solution
4
solution alloy
4
alloy highly
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!