DataVXAdvanced Functional MaterialsPaper
journal article·2026-03

Beyond Volcano Top of Transition Metal‐Based Electrocatalysts Triggered by Spin State Modulation

Yucheng Lv, Zhi Fang, Linlin Zhou, Puyu Du, Zeyu Gao, Wanting Zhao, Xinmei Hou, Yanghui Lu, Wensheng Yan, Kai Chen, Song Gao, Yanglong Hou

Advanced Functional Materials· Volume 36· Issue 19
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Source abstract

Abstract

Abstract Although modulating the spin state of transition metal (TM)‐based catalysts has emerged as a strategy to improve the sluggish kinetics of oxygen evolution reaction (OER), the quantitative correlation between spin state and OER activity remains elusive, especially at the experimental level. This hinders the rational design of high‐performance electrocatalysts. Here, ferromagnetic CoSe 2 polycrystalline nanoparticles by hydrothermal and vapor anion exchange methods are synthesized. Zn with various concentrations is doped to regulate the spin quantum number ( S ) of Co. The results show that the saturation magnetization of Co 0.9 Zn 0.1 Se 2 , as a macroscopic feature of S , exhibits a remarkable 18‐fold enhancement from 0.74 to 14.2 emu g −1 . Such enhanced S achieves an extraordinary enhancement of OER activity by 448%, surpassing its traditional volcano top. Meanwhile, the OER activity demonstrates a strong linear relationship with S , clarifying the effect of total S in bulk on the surface active sites. This work systematically quantifies the spin‐catalysis relationship and formulates the guidelines for precision design of spin‐optimized electrocatalysts.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Machine Learning in Materials Science · Electrochemical Analysis and Applications

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

Affiliations

Institute for Carbon Neutrality, Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing 100083 China

School of Materials Science and Engineering Peking University Beijing 100871 China

School of Materials Shenzhen Campus of Sun Yat‐sen University Shenzhen 518107 China

State Power Investment Corporation Research Institute Beijing 102209 China

Institute of Steel Sustainable Technology Liaoning Academy of Materials Shenyang 110000 China

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

School of Chemistry Sun Yat‐sen University Guangzhou 510275 China

State Key Laboratory of Optoelectronic Materials and Technologies Guangzhou 510275 China

Funding

National Science Fund for Distinguished Young Scholars · National Natural Science Foundation of China · National Key Research and Development Program of China · Shenzhen Science and Technology Innovation Program

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