Benzoate Anions-Intercalated Layered Cobalt Hydroxide Nanoarray: An Efficient Electrocatalyst for Oxygen Evolution Reaction.

Author(s) Sun, X.
Journal ChemSusChem
Date Published 2017 Aug 24

Efficient oxygen evolution reaction (OER) catalysts are highly desired to improve the overall efficiency of electrochemical water splitting. In this communication, we develop a benzoate anions-intercalated layered cobalt hydroxide nanobelt array on nickel foam (benzoate-Co(OH)2/NF) via a one-pot hydrothermal process. As a three-dimensional electrode, benzoate-Co(OH)2/NF with an expanded interlayer spacing (14.72 Å) drives a high OER catalytic current density of 50 mA cm-2 at an overpotential of 291 mV, outperforming its carbonate anions-intercalated counterpart with a lower interlayer spacing of 8.81 Å (337 mV overpotential at 50 mA cm-2). Moreover, this benzoate-Co(OH)2/NF can maintain its catalytic activity for 21 h.

DOI 10.1002/cssc.201701358
ISSN 1864-564X
Citation ChemSusChem. 2017.

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