Core–Shell NiO@Ni‐P Hybrid Nanosheet Array for Synergistically Enhanced Oxygen Evolution Electrocatalysis: Experimental and Theoretical Insights |
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| Authors: | Shuai Hao Ninghua Chen Qin Liu Prof Ying Xie Prof Honggang Fu Prof Yingchun Yang |
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| Institution: | 1. College of Resources and Evironment, Chengdu University of Information Technology, Chengdu, China;2. Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Harbin, Heilongjiang, China |
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| Abstract: | Cost‐effective and highly‐efficient electrocatalysts for the oxygen evolution reaction are crucial for electrolytic hydrogen production. Here, we report core–shell NiO@Ni‐P nanosheet arrays as a high‐performance 3D catalyst for water oxidation electrocatalysis. Such nanoarrays demand overpotentials of 292 and 350 mV to drive geometrical catalytic current densities of 10 and 100 mA cm?2, respectively, with an activity superior to its NiO and Ni‐P counterparts. Notably, this catalyst also shows a high long‐term electrochemical durability with a Faradaic efficiency of 98.1 %. Density functional theory calculation reveals that the superior activity benefits from the synergistic effect between NiO and Ni‐P. |
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| Keywords: | density functional calculations nanosheet arrays oxygen evolution reaction synergistic effect water oxidation electrocatalysis |
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