物理化学学报Issue(5)：981-988,8.DOI:10.3866/PKU.WHXB201303071
Ni/NiCo2O4电极的制备及其析氧反应性能
Preparation and Oxygen Evolution Reaction Performance of Ni/NiCo2O4 Electrode
王森林 1王丽品 1张振洪1
作者信息
- 1. 华侨大学材料科学与工程学院应用化学系，福建厦门361021
- 折叠
摘要
Abstract
Spinel-type NiCo2O4 powders were prepared by a sol-gel method, and Ni/NiCo2O4 electrode was prepared through composite sol method combined with sintering. The composition and structure of Ni/NiCo2O4 were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDS). Electrocatalytic properties of the Ni/NiCo2O4 electrode in the oxygen evolution reaction (OER) were studied in 5 mol·L-1 KOH solution, using cyclic voltammertry (CV), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), chronoamperometry, and extended duration constant potential electrolysis. The Ni/NiCo2O4 electrode exhibited a lower OER over-potential, higher specific surface area, and better stability than a porous Ni electrode. The specific surface area of the Ni/NiCo2O4 electrode was 28.69 times greater than that of the porous Ni electrode, and its apparent activation energies decrease 166.78 and 162.15 kJ·mol-1 at different overpotentials, respectively.关键词
溶胶-凝胶/NiCo2O4/多孔镍/析氧反应/电催化Key words
Sol-gel/NiCo2O4/Porous nickel/Oxygen evolution reaction/Electrocatalysis分类
化学化工引用本文复制引用
王森林,王丽品,张振洪..Ni/NiCo2O4电极的制备及其析氧反应性能[J].物理化学学报,2013,(5):981-988,8.
