Journal
NANO-MICRO LETTERS
Volume 10, Issue 1, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s40820-017-0160-6
Keywords
Bifunctional electrocatalysts; Oxygen evolution reaction; Hydrogen evolution reaction; Cobalt-manganese sulfides; Water splitting
Funding
- National Natural Science Foundation of China [21576113, 21376105]
- Foshan Innovative and Entrepreneurial Research Team Program [2014IT100062]
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The exploration of low-cost and efficient bifunctional electrocatalysts for oxygen evolution reaction and hydrogen evolution reaction through tuning the chemical composition is strongly required for sustainable resources. Herein, we developed a bimetallic cobalt-manganese sulfide supported on Ni foam (CMS/Ni) via a solvothermal method. It has discovered that after combining with the pure Co9S8 and MnS, the morphologies of CMS/Ni have modulated. The obtained three-dimensionally hexagram-like CMS/Ni nanosheets have a significant increase in electrochemical active surface area and charge transport ability. More than that, the synergetic effect of Co and Mn has also presented in this composite. Benefiting from these, the CMS/Ni electrode shows great performance toward hydrogen evolution reaction and oxygen evolution reaction in basic medium, comparing favorably to that of the pure Co9S8/Ni and MnS/Ni. More importantly, this versatile CMS/Ni can catalyze the water splitting in a two-electrode system at a potential of 1.47 V, and this electrolyzer can be efficiently driven by a 1.50 V commercial dry battery.
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