The hybrid Pt nanoclusters/Ru nanowires catalysts accelerating alkaline hydrogen evolution reaction

Jingjing Yan; Rundong Wu; Guoqiang Jin; Litao Jia; Gang Feng; Xili Tong

Advanced Powder Materials (Oct 2024)

The hybrid Pt nanoclusters/Ru nanowires catalysts accelerating alkaline hydrogen evolution reaction

Jingjing Yan,
Rundong Wu,
Guoqiang Jin,
Litao Jia,
Gang Feng,
Xili Tong

Affiliations

Jingjing Yan: State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; University of Chinese Academy of Sciences, Beijing 100049, China
Rundong Wu: Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, Institute of Applied Chemistry, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
Guoqiang Jin: State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
Litao Jia: State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
Gang Feng: Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, Institute of Applied Chemistry, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China; Corresponding author.
Xili Tong: State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Corresponding author.

Journal volume & issue: Vol. 3, no. 5
p. 100214

Abstract

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Water electrolysis via alkaline hydrogen evolution reaction (HER) is a promising approach for large-scale production of high-purity hydrogen at a low cost, utilizing renewable and clean energy. However, the sluggish kinetics derived from the high energy barrier of water dissociation impedes seriously its practical application. Herein, a series of hybrid Pt nanoclusters/Ru nanowires (Pt/Ru NWs) catalysts are demonstrated to accelerate alkaline HER. And the optimized Pt/Ru NWs (10 % wt Pt) exhibits exceptional performance with an ultralow overpotential (24 mV at 10 mA cm−2), a small Tafel slope (26.3 mV dec−1), and long-term stability, outperforming the benchmark commercial Pt/C-JM-20 % wt catalyst. This amazing performance also occurred in the alkaline anion-exchange membrane water electrolysis devices, where it delivered a cell voltage of about 1.9 V at 1 A cm−2 and an outstanding stability (more than 100 h). The calculations have revealed such a superior performance exhibited by Pt/Ru NWs stems from the formed heterointerfaces, which significantly reduce the energy barrier of the decisive rate step of water dissociation via cooperative-action between Pt cluster and Ru substance. This work provides valuable perspectives for designing advanced materials toward alkaline HER and beyond.

Published in Advanced Powder Materials

ISSN: 2772-834X (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/advanced-powder-materials/

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