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Fabricating heterointerfaces with optimized electronic structures is a robust strategy to boost the activity of electrocatalysts. Herein, for the first time, we demonstrate that the heterointerfaces of metallic Ag and NiFe-oxides on hierarchical nanoarrays facilitate the charge transfer during the OER and optimize the electronic state of NiFe-oxides, thereby significantly boosting the activity for the OER.
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Zhu et al. (2018) studied this question.
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