Core-Shell NiO@Ni-P Hybrid Nanosheet Array for Synergistically Enhanced Oxygen Evolution Electrocatalysis: Experimental and Theoretical Insights.
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.
['Hao|Shuai|S|', 'Chen|Ninghua|N|', 'Liu|Qin|Q|', 'Xie|Ying|Y|', 'Fu|Honggang|H|', 'Yang|Yingchun|Y|http://orcid.org/0000-0002-5582-7836']
nanosheet arrays oxygen evolution reaction water oxidation electrocatalysis synergistic effect density functional calculations