Holey nanospheres of amorphous bimetallic phosphide electrodeposited on 3D porous Ni foam for efficient oxygen evolution
Holey nanospheres of amorphous bimetallic phosphide electrodeposited on 3D porous Ni foam for efficient oxygen evolution
复制标题
非晶态双金属磷化物的多孔纳米球电沉积在 3D 多孔镍泡沫上以实现高效析氧
DOI：
10.1016/j.apsusc.2019.02.134
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发表时间：
2019-06-15
影响因子：
6.7
通讯作者：
Pan, Fusheng
中科院分区：
文献类型：
--
作者：
Li, Lingjie;Huang, Wenjun;Pan, Fusheng
在大规模水电解制氢过程中，具有低成本、高催化性能的析氧反应电催化剂是必不可少的。在此，我们报道了一种廉价而高效的OER催化剂，非晶态Ni-Fe-P多孔纳米球，它是通过一步电沉积在三维多孔镍泡沫上原位生长的。结果表明，Ni-Fe-P/NF在碱性介质中具有良好的催化性能，在10 mA cm（-2）电流密度下的过电位为156 mV，Tafel斜率为69 mV dec（-1），长期稳定性（> 36 h）上级文献报道的金属磷化物催化剂和工业催化剂IrO 2。这种优异的OER催化性能是由于Ni和Fe元素的协同作用、Ni-Fe磷化物的非晶态多孔结构、表面超疏水性和自支撑结构等因素造成的。
The electrocatalyst with low cost and excellent catalytic performance for oxygen evolution reaction (OER) is indispensable in large-scale water electrolysis for hydrogen generation. Herein, we report an inexpensive and highly efficient OER catalyst, amorphous Ni-Fe-P holey nanospheres, which were in situ grown on 3D porous Ni foam by one-step electrodeposition. The as-prepared Ni-Fe-P/NF shows attractive catalytic performance in alkaline medium with a low overpotential of 156 mV at a 10 mA cm(-2) current density, a Tafel slope of 69 mV dec(-1), and the long-term (> 36 h) durability, which is superior to other well-performed metal-phosphide catalysts reported and the commercial catalyst IrO2. Such remarkable OER catalytic performance can be attributed to the synergism of Ni and Fe elements, the amorphous holey structure, the surface superaerophobicity and self-supportive configuration of the as-prepared Ni-Fe bimetal phosphide.