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Download fileNovel Cobalt–Iron–Vanadium Layered Double Hydroxide Nanosheet Arrays for Superior Water Oxidation Performance
journal contribution
posted on 11.09.2019, 19:46 authored by Yiming Hu, Zhaolong Wang, Wenjun Liu, Li Xu, Meili Guan, Yunpeng Huang, Yan Zhao, Jian Bao, Hua-ming LiAs
is known, oxygen evolution reaction (OER) involves complex four
electron-transfer processes, thus the electrocatalysts are often needed
to decrease the high activation barrier. Searching for electrocatalysts
with superior OER catalytic performance is of great importance. In
this work, we reported a Ni foam (NF) supported CoFeV layered double
hydroxide (LDH) nanosheet arrays as an efficient OER catalyst, which
can afford a low overpotential for 0.242 and 0.33 V to generate 10
and 100 mA cm–2, respectively. This activity is
not only better than that of CoFe LDH/NF and CoV LDH/NF but also superior
to that of the most reported OER catalysts. Its satisfactory activity
is benefited from the introduction of a high valence state V, which
could draw the electron and thus stabilize the neighboring 3d metals
as the active sites. This work significantly indicates that CoFeV
LDH/NF is a promising alternative as an electrocatalyst for water
oxidation.