期刊
NANO ENERGY
卷 11, 期 -, 页码 333-340出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2014.11.021
关键词
NiCo2O4; Core-shell; Nanowires; Electrocatalysis; Oxygen evolution reaction
类别
资金
- Nanyang Technological University [M4080977.120]
- Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 [M4011021.120]
- Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRise)
- National Research Foundation (NRF)
- Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program
Three-dimensional NiCo2O4 core-shell nanowires made up of NiCo2O4 nanowire core and NiCo2O4 nanoflake shell have been fabricated by a simple two-step wet chemical method on flexible conductive carbon cloth substrate for oxygen evolution reaction (OER). The combination of high surface area, enhanced mass and charge transport as well as three-dimensional conducting pathway enables superior oxygen evolution reaction. Notably, the NiCo2O4 core-shell nanowire electrode exhibits large anodic current and low onset overpotential for OER with an overpotential of similar to 320 mV at a current density of 10 mA/cm(2). Furthermore, the NiCo2O4 core-shell nanowire electrode possesses excellent electrocatalytic stability with long hour electrolysis showing no visible degradation, which is highly desirable for a promising OER electrocatalyst. (C) 2014 Elsevier Ltd. All rights reserved.
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