DataVXAdvanced Functional MaterialsPaper
journal article·2025-03Open access

Independent Tuning of Intermediate Energetics for Enhanced Oxygen Evolution via Synergistic Defects

Ding Yuan, Xiaoyi Dou, Qing Zhang, Chun‐Ting He, Chao Wu, Yang Li, Weijie Li, Linping Yu, Lei Zhang, Hua Kun Liu, Shi Xue Dou, Ji Liang, Yuhai Dou

Advanced Functional Materials· Volume 35· Issue 12
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Source abstract

Abstract

Abstract Electronic structure engineering via integrating different defects is the key to achieving independent tuning of intermediate energetics for efficient electrocatalyst design. Such a combination of defects is at the forefront of current research. Herein, W is etched from Co(OH) 2 to generate Co vacancies, which are then partially filled with La to form Co(OH) 2 ‐Co V ‐La D for oxygen evolution reaction (OER). The results show that Co vacancy and La dopant induce more high‐valence Co species under OER conditions and the most active center is a surface Co site that is adjacent to a surface Co vacancy and a subsurface La dopant on different sides, where the optimized electronic structure narrows the gap between Gibbs free energies of OH* (ΔG OH* ) and OOH* (ΔG OOH* ) and modifies ΔG O* close to the midpoint, leading to high catalytic activity. The integration of synergistic defects offers an effective strategy to generate a range of defect atomic configurations and diverse electronic states, which enable the independent tuning of intermediate energetics, thereby unlocking the catalyst's full catalytic potential.
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Research context

Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Semiconductor materials and devices

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

Affiliations

Institute of Energy Materials Science University of Shanghai for Science and Technology Shanghai 200093 China

Key Laboratory of Functional Small Organic Molecule Ministry of Education College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 China

Institute of Process Equipment College of Energy Engineering Zhejiang University Hangzhou 310000 China

Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong Wollongong 2500 Australia

School of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China

Centre for Catalysis and Clean Energy Griffith University Gold Coast 4222 Australia

Key Laboratory of Advanced Ceramics and Machining Technology Ministry of Education School of Materials Science and Engineering Tianjin University Tianjin 300354 China

Funding

University of Shanghai for Science and Technology

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