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Summary: This review summarizes the recent progress in the stability and deactivation mechanisms of OER catalysts. The correlation between OER activity and stability, methodologies and experimental techniques for studying stability and deactivation, as well as factors influencing stability are discussed. Strategies for stabilizing and regenerating OER catalysts, as well as methods for predicting stability, are also summarized. Furthermore, the review highlights emerging methodologies yet to be explored and future directions for stability studies and the design of highly stable OER catalysts.
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Summary: In this study, fluorine-doped cobalt molybdate nanosheet arrays were synthesized on graphite felt to enhance the kinetics of the oxygen evolution reaction. The F-CoMoO4 electrocatalyst showed improved OER performance due to the induction of oxygen vacancies and optimization of the electronic configuration of CoMoO4. The DFT results revealed that the change in Mo 4d state led to a decrease in band-gap and an increase in electrical conductivity, thereby optimizing the intrinsic activity of CoMoO4. The synthesis strategy employed in this work may offer insights for enhancing the electrical conductivity of other transition metal oxides.
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Chao Guo et al.
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ACS MATERIALS LETTERS
(2022)
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Shuang Chen et al.
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Ayan Mondal et al.
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Shamraiz Hussain Talib et al.
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Review
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Yuting Zhu et al.
Summary: MOF-derived non-noble metal-oxygen electrocatalysts play a crucial role in ZABs, and their performance is influenced by material structure. Research in this field mainly focuses on oxygen reduction and oxygen evolution reactions, with evolving catalyst design strategies aiming to enhance performance and address challenges.
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