Self-assembled Cu-Ni bimetal oxide 3D in-plane epitaxial structures for highly efficient oxygen evolution reaction
Self-assembled Cu-Ni bimetal oxide 3D in-plane epitaxial structures for highly efficient oxygen evolution reaction
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DOI：
10.1016/j.apcatb.2018.11.046
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发表时间：
2019-05-05
影响因子：
22.1
通讯作者：
Huang, Yizhong
中科院分区：
文献类型：
--
作者：
Li, Chaojiang;Zhang, Bowei;Huang, Yizhong
为了提高铜基电极对析氧反应的催化活性，采用双阴极等离子体放电（DC-LPD）方法在泡沫镍（NF）上制备了三维巢状结构电极。通过对Cu（OH）（2）-Ni 2 O3 H/NF面内外延层进行热处理得到的CuO-NiO/NF电极在319 mV的低过电位下对析氧反应具有良好的电催化活性，电流密度为10 mA/cm（2）。CuO-NiO/NF电极的电化学活性表面积（ECSA）是Cu（OH）（2）-Ni 2 O3 H/NF电极的2倍以上。Cu和Ni之间的协同作用使得CuO-NiO/NF电极成为与单一NiO/NF电极相比具有改善的活性和稳定性的上级电催化剂。
To improve the catalytic activity of copper based electrode for oxygen evolution reaction (OER), double cathodes liquid plasma discharge (DC-LPD) method was developed to fabricate three-dimensional (3D) nest-like structure; electrode on the nickel foam (NF). The CuO-NiO/NF electrode obtained through annealing the in-plane epitaxial Cu(OH)(2)-Ni2O3H/NF in the oven, exhibits excellent electrocatalytic activities for the oxygen evolution reaction at a low overpotential of 319 mV to achieve a current density of 10 mA/cm(2). The electrochemically active surface area (ECSA) of CuO-NiO/NF is over 2 times larger than that of Cu(OH)(2)-Ni2O3H/NF electrode. The synergistic effort between Cu and Ni makes the CuO-NiO/NF electrode a superior electrocatalyst with improved activity and stability as compared to the single NiO/NF electrode.