Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 16, Pages 7291-7294Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta01027c
Keywords
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Funding
- National Key Scientific Instrument and Equipment Development Project of China [21627809]
- National Natural Science Foundation of China [21375047, 21377046, 21405059, 21575050, 21601064]
- Natural Science Foundation of Shandong Province [ZR2016JL013, ZR2016BQ10]
- Graduate Innovation Foundation of University of Jinan [YCXB15004]
- Special Foundation for Taishan Scholar Professorship of Shandong Province [ts20130937]
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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.
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