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Flower-like platinum-cobalt-ruthenium alloy nanoassemblies as robust and highly efficient electrocatalyst for hydrogen evolution reaction

Authors
  • Chen, Hong-Yan
  • Niu, Hua-Jie
  • Ma, Xiaohong
  • Feng, Jiu-Ju
  • Weng, Xuexiang
  • Huang, Hong
  • Wang, Ai-Jun
Publication Date
Mar 01, 2020
Source
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
Keywords
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Abstract

Exploring hydrogen evolution reaction (HER) catalyst with highly catalytic features in alkaline conditions is considered as significance for water splitting. In this study, a general and simple method was developed to prepare flower-like platinum-cobalt-ruthenium alloy nanoassemblies (PtCoRu NAs) by using murexide and cetyltrimethylammonium chloride (CTAC) as the co-structure-directing agents. Benefiting from the structural advantages and multimetallic compositions, the as-prepared PtCoRu NAs displayed remarkably enhanced electrocatalytic performance for the HER in 1.0 M KOH, with a low overpotential (eta, 22 mV) to drive 10 mA cm(-2), small Tafel slope (46 mV dec(-1)), and high exchange current density (j(0), 3.30 mA cm(-2)) during the long-term electrolysis. The as-developed strategy sheds some valuable guidelines for preparing advanced multimetallic catalysts for production of hydrogen in fuel cells. (C) 2019 Elsevier Inc. All rights reserved.

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