期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 1, 页码 341-349出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03636
关键词
Ni@Pt core-shell nanoplates; Ni/rGO; Oxygen evolution reaction (OER)
资金
- National Natural Science Foundation of China [51874357, 51872333]
- Hunan Provincial Natural Science Foundation of China [13JJ1005]
- Shenghua Scholar Program of Central South University
- JSPS KAKENNHI [15H03534, 15K13296]
Water splitting is an efficient and effective route toward regenerative hydrogen energy. In this study, we reported the preparation of pure Ni nanoplates by using two-dimensional Ni-Al layered double hydroxides (LDHs) as the precursor. The Ni@Pt core shell nanoplates composites have been successfully prepared by partially replacing the Ni with Pt. Meanwhile, Ni/rGO composites can be prepared by combining Ni nanoplates with graphene oxide. The electrocatalytic activities of Ni@Pt core shell nanoplates and Ni/rGO composites toward oxygen evolution reaction (OER) in alkaline media are investigated, revealing that Ni/rGO achieved a low overpotential of 0.33 V at 10 mA cm(-2) and Tafel slope of 68 mV dec(-1). Ni@Pt core-shell nanoplates exhibit a lower overpotential of 0.29 V (10 mA cm(-2)) and smaller Tafel slope of 52 mV dec(-1). Owing to the remarkable electrocatalytic properties, the obtained materials could be promising catalysts with low-cost and high catalytic performance.
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