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Controlled Synthesis of 3D Flower-like Ni2P Composed of Mesoporous Nanoplates for Overall Water Splitting.
- Source :
-
Chemistry - An Asian Journal . 11/16/2017, Vol. 12 Issue 22, p2956-2961. 6p. - Publication Year :
- 2017
-
Abstract
- Developing efficient non-noble metal and earth-abundant electrocatalysts with tunable microstructures for overall water splitting is critical to promote clean energy technologies for a hydrogen economy. Herein, novel three-dimensional (3D) flower-like Ni2P composed of mesoporous nanoplates with controllable morphology and high surface area was prepared by a hydrothermal method and low-temperature phosphidation as efficient electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Compared with the urchin-like Ni xP y, the 3D flower-like Ni2P with a diameter of 5 μm presented an efficient and stable catalytic performance in 0.5 m H2SO4, with a small Tafel slope of 79 mV dec−1 and an overpotential of about 240 mV at a current density of 10 mA cm−2 with a mass loading density of 0.283 mg cm−2. In addition, the catalyst also exhibited a remarkable performance for the OER in 1.0 m KOH electrolyte, with an overpotential of 320 mV to reach a current density of 10 mA cm−2 and a small Tafel slope of 72 mV dec−1. The excellent catalytic performance of the as-prepared Ni2P may be ascribed to its novel 3D morphology with unique mesoporous structure. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18614728
- Volume :
- 12
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Chemistry - An Asian Journal
- Publication Type :
- Academic Journal
- Accession number :
- 126261447
- Full Text :
- https://doi.org/10.1002/asia.201701255