DataVXAdvanced Energy MaterialsPaper
journal article·2020-06

Ruthenium Triazine Composite: A Good Match for Increasing Hydrogen Evolution Activity through Contact Electrification

Qiangjian Ju, Ruguang Ma, Yu Pei, Beibei Guo, Zichuang Li, Qian Liu, Tiju Thomas, Minghui Yang, Graham J. Hutchings, Jiacheng Wang

Advanced Energy Materials· Volume 10· Issue 21
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Source abstract

Abstract

Abstract The development of Pt‐free catalysts for the alkaline hydrogen evolution reaction (HER), which is widely used in industrial scale water‐alkali electrolyzers, remains a contemporary and pressing challenge. Ruthenium (Ru) has excellent water‐dissociation abilities and could be an alternative water splitting catalyst. However, its large hydrogen binding energy limits HER activity. Here, a new approach is proposed to boost the HER activity of Ru through uniform loading of Ru nanoparticles on triazine‐ring (C3N3)‐doped carbon (triNC). The composite (Ru/triNC) exhibits outstanding HER activity with an ultralow overpotential of ≈2 mV at 10 mA cm−2; thereby making it the best performing electrocatalyst hitherto reported for alkaline HER. The calculated metal mass activity of Ru/triNC is >10 and 15 times higher than that of Pt/C and Pt/triNC. Both theoretical and experimental studies reveal that the triazine‐ring is a good match for Ru to weaken the hydrogen binding on Ru through interfacial charge transfer via increased contact electrification. Therefore, Ru/triNC can provide the optimal hydrogen adsorption free energy (approaching zero), while maintaining the strong water‐dissociation activity. This study provides a new avenue for designing highly efficient and stable electrocatalysts for water splitting.
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Research context

NanomaterialsCompositesCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced Photocatalysis Techniques · Fuel Cells and Related Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

The State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences 1295 Dingxi Road Shanghai 200050 China

Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo 315201 China

University of Chinese Academy of Sciences 19A Yuquan Road, Shijingshan District Beijing 100049 China

Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Adyar Chennai Tamil Nadu 600036 India

Cardiff Catalysis Institute School of Chemistry Cardiff University Main Building Park Place Cardiff CF10 3AT UK

Funding

National Natural Science Foundation of China · National Basic Research Program of China · Science and Technology Commission of Shanghai Municipality · Department of Science and Technology, Government of Kerala · Ministry of Electronics and Information technology · Chinese Academy of Sciences

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