School of Chemical Sciences, The University of Auckland, Auckland, 1142, New Zealand.
Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China.
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Metal dissolution induced by lattice distortions was found to be responsible for the activity degradation of NiFe-LDH catalysts during alkaline OER. This degradation could be suppressed by introducing atomic cation vacancies in the LDH basal plane. Cation vacancy engineering strengthened the binding energy between metal cations and oxygen in the LDH layers and reduced lattice distortions, thereby enhancing catalyst stability and promoting active phase γ-(NiFe)OOH evolution during OER.
中文翻译：
NiFe 层状双氢氧化物的原子阳离子空位工程，以提高氧气释放反应的活性和稳定性
发现由晶格畸变引起的金属溶解是碱性 OER 过程中 NiFe-LDH 催化剂活性降低的原因。这种降解可以通过在 LDH 基面引入原子阳离子空位来抑制。阳离子空位工程增强了LDH层中金属阳离子与氧之间的结合能并减少了晶格畸变，从而提高了催化剂的稳定性并促进了OER过程中活性相γ-(NiFe)OOH的演化。
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