journal article·2025-08

Modulating the Binding Strength of Multiple Intermediates by Few‐Layer Fullerene Network Electron Buffer for Alkaline Hydrogen Evolution

Xing Wang, Xiang Chen, Rongyao Lv, Hao Ma, Yangrong Yao, Hongqiang Jin, Sicong Qiao, Yuanmiao Sun, Dongming Liu, Li Song, Pingwu Du, Wei Chen, Yalin Lu, Shangfeng Yang

Small· Volume 21· Issue 32
Publisher page

Abstract

Abstract The reaction kinetics for electrochemical hydrogen evolution reaction (HER) in an alkaline medium is more sluggish than in acid because it involves extraordinary adsorption and desorption of multiple oxygenated intermediates. Herein, by using covalently bonded 2D fullerene C 60 network (abbreviated 2D‐C 60 ) as a unique support of Ru nanoparticles (NPs), the binding strengths of the key intermediates in the alkaline HER process are successfully modulated owing to the electron buffering effect of 2D‐C 60 , which can dynamically buffer the change of charge density on metal active sites resulted from the adsorption and desorption of intermediates. The as‐prepared Ru NPs/2D‐C 60 catalyst exhibits a low overpotential of 24 mV at 10 mA cm −1 and eight times higher intrinsic activity than Ru NPs toward the alkaline HER. The kinetics studies and theoretical calculations reveal that, thanks to the reversible charge transfer among 2D‐C 60 , metal, and intermediates during the HER process, the binding strengths of both H and OH species on the Ru surface are weakened, affording an accelerated HER kinetics process and improved HER activity.
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Research context

OpenAlex topics: Fullerene Chemistry and Applications · Electrocatalysts for Energy Conversion · Advanced battery technologies research

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

Affiliations

Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Precision and Intelligent Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Anhui Laboratory of Advanced Photon Science and Technology, Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China

School of Materials Science and Engineering, Key Lab of Efficient Conversion and Solid‐State Storage of Hydrogen & Electricity Anhui University of Technology Maanshan 243002 China

Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore

Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China

National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei 230029 China

Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117542 Singapore

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