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稀土Y摻雜Ti/SnO2+MnOx/PbO2電極的電化學(xué)性能研究
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國家自然科學(xué)基金(20771080)；山西省自然科學(xué)基金(20031024)


Study of Electrochemical Properties of Ti/SnO2+MnOx/PbO2 Electrode Doped with Rare Earth Y
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    摘要:

    采用熱分解和電沉積的方法制備了稀土元素Y摻雜Ti/SnO2+MnOx/PbO2耐酸陽極。用XRD、SEM表征了電極的物相和表面形貌，用CV、EIS測定了電極的電化學(xué)性能，并研究了Y摻雜對電極在強酸性溶液中使用壽命的影響。結(jié)果表明：Y以Y2O3的形式與SnO2形成半導(dǎo)體固溶體，使電極在高電流密度(4 A/cm2)下的預(yù)期使用壽命達到70 h；同時該電極的析氧電位高達2.1 V，且電極表面呈蘑菇狀，電催化性較好，Ti/SnO2+Y2O3+MnOx/PbO2電極是一種較理想的耐酸陽極材料

    Abstract:

    Acid-proof Ti/SnO2+MnOx/PbO2 anode doped with rare earth Y was prepared by thermal decomposition method and electrodeposited method. The surface characterization of the electrode was characterized by scanning electron microscopy(SEM) and the element composition of layers was analyzed with X-ray Diffraction(XRD). The electrode electrochemical properties were analyzed with Cyclic Voltammogram (CV) and Electrochemical Impedance Spectroscopic (EIS).The influence of Y doping on the service life of the electrode in strong acid solution was emphatically studied. The results indicated that the semiconductive solid solution was formed between Y2O3 and SnO2, which maked the service life of electrode reaching 70 h in high electric density(4 A/cm2); At the same time the oxygen evolution reaction(OER) potential of this electrode reached 2.1 V . The rougher of the surface was, the better its electric catalytic properties were. Ti/SnO2+Y2O3+MnOx/PbO2 electrode is an ideal acid-proof anode material

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褚秋霞,梁鎮(zhèn)海,孫顏發(fā),王榮鵬,樊彩梅.稀土Y摻雜Ti/SnO2+MnOx/PbO2電極的電化學(xué)性能研究[J].稀有金屬材料與工程,2009,38(5):821~825.[Chu Qiuxia, Liang Zhenhai, Sun Yanfa, Wang Rongpeng, Fan Caimei. Study of Electrochemical Properties of Ti/SnO2+MnOx/PbO2 Electrode Doped with Rare Earth Y[J]. Rare Metal Materials and Engineering,2009,38(5):821~825.]
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  • 收稿日期:2008-06-17
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