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NiCo2O4 nanoflakes supported on titanium suboxide as a highly efficient electrocatalyst towards oxygen evolution reaction

Authors
  • Zheng, Zhilin
  • Geng, Wangchang
  • Wang, Yi
  • Huang, Yun
  • Qi, Tao
Publication Date
Jan 05, 2017
Source
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
Keywords
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Abstract

NiCo2O4 nanoflakes, NiCo2O4 nanoflakes supported on carbon black (NiCo2O4/C) and titanium suboxide (NiCo2O4/Ti4O7), respectively, are synthesized by a simple solution method followed by an annealing process. Their electrocatalytic performance for oxygen evolution reaction (OER) is investigated. The results show that the NiCo2O4/Ti4O7 possesses not only the best stability but also the highest catalytic activity, which may be attributed to the enhanced electrical conductivity and higher contents of Co2+ and Ni3+ caused by Ti4O7 according to the analyses for electrochemical impedance spectra and X-ray photoelectron spectra. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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