Journal
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
Volume 12, Issue 3, Pages 467-472Publisher
SPRINGER
DOI: 10.1007/s11705-018-1717-8
Keywords
water oxidation; NiCO3; NF; nearly neutral conditions; superior activity; electocatalyst
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Funding
- National Natural Science Foundation of China [21575137]
- Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials [16kffk04]
- Key Lab of Process Analysis and Control of Sichuan Universities [2016001]
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It is highly attractive but still remains a great challenge to develop an efficient electrocatalyst for oxygen evolution reaction under nearly neutral conditions. In this work, we report the transformation of Ni3S2 nanowire array on nickel foam into the amorphous nickel carbonate nanowire array on nickel foam (NiCO3/NF). The resulting NiCO3/NF shows high electrocatalytic activity towards water oxidation and affords current density of 50 mA.cm(2) at overpotential of 395 mV in 1.0 mol.L-1 KHCO3. Moreover, this NiCO3/NF is also durable with a long-term electrochemical durability of 60 h. This catalyst electrode achieves a high turnover frequency of 0.21 mol O-2.s(1) at the overpotential of 500 mV.
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