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Citation: GAO Yin-Yi, CAO Dian-Xue, WANG Gui-Ling, YIN Cui-Lei. Catalytic Behavior of NiCo₂O₄ for H₂O₂ Electroreduction in Alkaline Medium[J]. Acta Physico-Chimica Sinica, ;2010, 26(01): 29-33. doi: 10.3866/PKU.WHXB20100102 shu

Catalytic Behavior of NiCo₂O₄ for H₂O₂ Electroreduction in Alkaline Medium

1.
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China

Received Date: 9 September 2009
Available Online: 9 November 2009

NiCo2O4 nanoparticles were synthesized using a sol-gel method. Their structures and morphologies were characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Results indicate that NiCo2O4 has a spinel structure and an average diameter of around 15 nm. The catalytic behavior of NiCo2O4 for H2O2 electroreduction in alkaline medium was investigated by linear potential sweep and chronoamperometry. NiCo2O4 shows considerable activity and stability for the electrocatalytic reduction of H2O2. The electroreduction occurs mainly via a direct pathway at H2O2 concentrations lower than 0.6 mol·L-1. An Al-H2O2 semi-fuel cell was constructed using NiCo2O4 as the cathode catalyst. The cell displays an open circuit voltage of 1.6 V and a peak power density of 209 mW·cm-2 at a current density of 220 mA·cm-2 running on 1.0 mol·L-1 H2O2 at ambient temperature.
- Electroreduction,
- Nickel cobaltite,
- Hydrogen peroxide,
- Cathode catalyst,
- Metal semi-fuel cell
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沈阳化工大学材料科学与工程学院沈阳 110142

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Catalytic Behavior of NiCo2O4 for H2O2 Electroreduction in Alkaline Medium

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通讯作者: 陈斌, bchen63@163.com

Catalytic Behavior of NiCo₂O₄ for H₂O₂ Electroreduction in Alkaline Medium