Three-dimensional flower-like NiCo₂O₄/CNT for efficient catalysis of the oxygen evolution reaction.

ABSTRACT: The oxygen evolution reaction (OER) is an important reaction especially in water splitting and metal-air batteries. Highly efficient non-noble metal based electrocatalysts are urgently required to be developed and to replace the commercial Ru/Ir based oxide. Herein, we report the three-dimensional hierarchical NiCo₂O₄/CNT-150 composite with high activity for the OER that was synthesized via a hydrothermal reaction and subsequent annealing. Compared with CNTs, commercial RuO₂ catalysts, NiCo₂O₄/CNT, NiCo₂O₄/CNT-250, and NiCo₂O₄/CNT-150 exhibit enhanced electrocatalytic performance with a lower onset overpotential of 300 mV and the corresponding Tafel slope of 129 mV per decade. The flow

SUBMITTER: Ma Z 

PROVIDER: S-EPMC9084419 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature