Issue 16, 2017

Cobalt–borate nanowire array as a high-performance catalyst for oxygen evolution reaction in near-neutral media

Abstract

The development of an efficient catalyst for electrolytic water oxidation under neutral or near-neutral environment remains a great challenge. In this communication, we developed a high-performance cobalt–borate nanowire array on a Ti mesh (Co–Bi NA/Ti) from a CoSe2 nanowire array via rapid topotactic conversion. As a three-dimensional water oxidation electrode, such Co–Bi NA/Ti, demands only 420 mV to drive a geometrical catalytic current density of 10 mA cm−2. It exhibits superior activity when compared to most of the reported non-precious metal catalysts working under benign conditions. In addition, Co–Bi NA/Ti also displays good stability and high turnover frequency (0.59 s−1 at an overpotential of 600 mV) in 0.1 M potassium borate (pH: 9.2). This novel research finding has paved a new path for developing highly active oxygen evolution reaction electrocatalysts in near-neutral media.

Graphical abstract: Cobalt–borate nanowire array as a high-performance catalyst for oxygen evolution reaction in near-neutral media

Supplementary files

Article information

Article type
Communication
Submitted
01 Feb 2017
Accepted
21 Mar 2017
First published
21 Mar 2017

J. Mater. Chem. A, 2017,5, 7291-7294

Cobalt–borate nanowire array as a high-performance catalyst for oxygen evolution reaction in near-neutral media

X. Ren, R. Ge, Y. Zhang, D. Liu, D. Wu, X. Sun, B. Du and Q. Wei, J. Mater. Chem. A, 2017, 5, 7291 DOI: 10.1039/C7TA01027C

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