Highly Dispersed Quasi‑1 nm Ruthenium Nanoclusters on Hierarchical Nitrogen-Doped Carbon Nanocages Constructed by Surface-Constrained Sintering for Alkaline Hydrogen Evolution

Highly Dispersed Quasi‑1 nm Ruthenium Nanoclusters on Hierarchical Nitrogen-Doped Carbon Nanocages Constructed by Surface-Constrained Sintering for Alkaline Hydrogen Evolution

A cost-efficient catalyst for electrochemical water splitting is crucial to green hydrogen production. Ru has a much lower cost and only slightly stronger adsorption to the hydrogen intermediate (*H) than Pt, demonstrating great potential for catalyzing the hydrogen evolution reaction (HER). Herein,...

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Veröffentlicht in:ACS applied nano materials 2024-05, Vol.7 (10), p.11882-11889
Hauptverfasser: He, Zhengyao, Chen, Yiqun, Tian, Jingyi, Cheng, Xueyi, Xia, Minqi, Zhou, Cao, Zhang, Yan, Wang, Xizhang, Yang, Lijun, Wu, Qiang, Hu, Zheng
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container_issue 10
container_start_page 11882
container_title ACS applied nano materials
container_volume 7
creator He, Zhengyao
Chen, Yiqun
Tian, Jingyi
Cheng, Xueyi
Xia, Minqi
Zhou, Cao
Zhang, Yan
Wang, Xizhang
Yang, Lijun
Wu, Qiang
Hu, Zheng
description A cost-efficient catalyst for electrochemical water splitting is crucial to green hydrogen production. Ru has a much lower cost and only slightly stronger adsorption to the hydrogen intermediate (*H) than Pt, demonstrating great potential for catalyzing the hydrogen evolution reaction (HER). Herein, Ru nanoclusters of quasi-1 nm size are highly dispersed on hierarchical N-doped carbon nanocages (hNCNC) by surface-constrained sintering, showing strong metal–support interaction due to the anchoring effect of abundant N dopants. The optimized electrocatalyst exhibits impressive HER performance in 1 M KOH, with a low overpotential of 21 mV at 10 mA cm–2 and superior electrocatalytic stability, which is attributed to the quasi-1 nm Ru nanoclusters with large electrochemical active surface area and optimized *H desorption behavior. This study provides an efficient and inexpensive alkaline HER electrocatalyst and also suggests a convenient strategy to develop highly dispersed noble-metal-based electrocatalysts by surface-constrained sintering.
doi_str_mv 10.1021/acsanm.4c01438
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