期刊
JOURNAL OF MATERIALS SCIENCE
卷 51, 期 20, 页码 9287-9295出版社
SPRINGER
DOI: 10.1007/s10853-016-0175-2
关键词
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资金
- National Natural Science Foundation of China [21376105, 21576113]
- Project for Foshan Innovation Groups [2014IT100062]
The oxygen evolution reaction (OER), as a key half-reaction in water splitting for clean hydrogen energy, is kinetically sluggish and usually requires efficient electrocatalysts to reduce the overpotential. Herein, we report a simple method to synthesize novel two-dimensional Ni76Co24 layered double hydroxides (Ni76Co24-LDHs) nanosheets as an effective OER catalyst. The obtained Ni76Co24-LDHs display a low onset overpotential of 242 mV, along with an excellent cycling stability. The Tafel slope of Ni76Co24-LDHs is only 57 mV dec(-1) which demonstrates an active kinetics for OER. The high catalytic activity of Ni76Co24-LDHs may be attributed to the porous tremella-like structure with large surface area, synergistic effect of Ni and Co, and a pinning of the Co3+/4+ and Ni3+/4+. More importantly, the high catalytic property and simple synthetic method of Ni76Co24-LDHs may have a promising potential for practical application.
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