Designing Ru–B–Cr Moieties to Activate the Ru Site for Acidic Water Electrolysis under Industrial-Level Current Density

Developing highly efficient non-iridium-based active sites for acidic water splitting is still a huge challenge. Herein, unique Ru-B-Cr moieties have been constructed in RuO<sub>2</sub> nanofibers (NFs) to activate Ru sites for water electrolysis, which overcomes the bottleneck of RuO<sub>2</sub>-based catalysts usually possessing low activity for the hydrogen evolution reaction (HER) and poor stability for the oxygen evolution reaction (OER). The fabricated Cr, B-doped RuO<sub>2</sub> NFs exhibit low overpotentials of 205 and 379 mV for acidic HER and OER at 1 A cm<sup>-2</sup> with outstanding stability lasting 1000 and 188 h, respectively. The assembled acidic electrolyzer also possesses great hydrogen production efficiency and durability at a high current density. Experimental and theoretical explorations reveal that the formation of Ru-B-Cr moieties effectively optimizes the atomic configurations and modulates the adsorption/desorption free energy of reaction intermediates to achieve exceptional HER and OER performance.

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Publication Details

Journal
Nano Letters
Published
2024-12-25
DOI
https://doi.org/10.1021/acs.nanolett.4c05113
Citations
40
Primary Topic
Electrocatalysts for Energy Conversion
Type
article
Field-Weighted Citation Impact
4.09

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article

Designing Ru–B–Cr Moieties to Activate the Ru Site for Acidic Water Electrolysis under Industrial-Level Current Density

Ruikai Qi, Lipo Ma, Mingbin Gao, Weimo Li et al.
40 citations
Nano Letters
Electrocatalysts for Energy Conversion
4.09
article

Designing Ru–B–Cr Moieties to Activate the Ru Site for Acidic Water Electrolysis under Industrial-Level Current Density

Ruikai Qi, Lipo Ma, Mingbin Gao, Weimo Li, Chengji Zhao, Xiaofeng Lu, Meijiao Xu, Jiawei Wang, Ce Wang, Linfeng Zhang, Yang Pang
article en
40 citations

Abstract

Developing highly efficient non-iridium-based active sites for acidic water splitting is still a huge challenge. Herein, unique Ru-B-Cr moieties have been constructed in RuO<sub>2</sub> nanofibers (NFs) to activate Ru sites for water electrolysis, which overcomes the bottleneck of RuO<sub>2</sub>-based catalysts usually possessing low activity for the hydrogen evolution reaction (HER) and poor stability for the oxygen evolution reaction (OER). The fabricated Cr, B-doped RuO<sub>2</sub> NFs exhibit low overpotentials of 205 and 379 mV for acidic HER and OER at 1 A cm<sup>-2</sup> with outstanding stability lasting 1000 and 188 h, respectively. The assembled acidic electrolyzer also possesses great hydrogen production efficiency and durability at a high current density. Experimental and theoretical explorations reveal that the formation of Ru-B-Cr moieties effectively optimizes the atomic configurations and modulates the adsorption/desorption free energy of reaction intermediates to achieve exceptional HER and OER performance.

Nano LettersVol. 25(1)
Changchun University of Science and Technology (CN), Xiamen University (CN), Jilin University (CN), Health Commission of Jilin Province (CN), Jilin Medical University (CN), Zhuhai Institute of Advanced Technology (CN)
National Natural Science Foundation of China, Jilin Scientific and Technological Development Program
Clean water and sanitation
Openalex Percentile: Top 5%
Electrocatalysts for Energy Conversion
4.09
DOISourceOpenAlex
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