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耐酸非贵金属Ti/MO2阳极SnO2+Sb2O4中间层研究
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TG146.23

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国家自然科学基金(20276054);山西省自然科学基金(20031024,20031025)


Study of SnO2+Sb2O4 Intermediate Layer in Non-Noble Metal Ti/MO2 Anode
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    摘要:

    采用热分解法制备了非贵金属Sn02+Sb204中间层Ti基MO2活性层电极,利用SEM,XRD和XPS方法对中间层进行了表征。测定了Ti/SnO2+Sb2Od/MnO2和Ti/SnO2+Sb2O4/PbO2电极在硫酸溶液中的析氧极化曲线,二者起始析氧过电位均比贵金属小;考察了在高电流密度(4A/cm^2)下的加速寿命,二者依次分别达到18h和86h。实验表明,SnO2+Sb2O4是一种具有良好导电性和结合力的耐酸Ti基MO2电极中间层材料。

    Abstract:

    Acid-proof Ti based-MO2 anodes with SnO2+Sb2O4 intermediate layer were prepared by thermal decomposition method, the surface characterization of the electrodes were studied by scanning electron microscopy (SEM), elements composition and valence state of SnO2+Sb2O4 intermediate layers were analyzed with X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS), respectively. The polarization curves of oxygen evolution and high density (4 A/cm2) lifetime of Ti/SnO2+ Sb2O4/MnO2 and Ti/ SnO2+Sb2O4/PbO2 anodes were determined in 1.0 mol/L H2SO4 solution. Their potentials of initial oxygen evolution were lower than those of moble metals, and their lifetimes reached 18 h and 86 h, respectively. The experiment showed that the combination of SnO2+Sb2O4 is a better intermediate layer material and will play a important role in Ti/MnO2 and Ti/PbO2 anodes.

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梁镇海 张福元 孙彦平.耐酸非贵金属Ti/MO2阳极SnO2+Sb2O4中间层研究[J].稀有金属材料与工程,2006,35(10):1605~1609.[Liang Zhenhai, Zhang Fuyuan, Sun Yanping. Study of SnO2+Sb2O4 Intermediate Layer in Non-Noble Metal Ti/MO2 Anode[J]. Rare Metal Materials and Engineering,2006,35(10):1605~1609.]
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  • 收稿日期:2006-04-07
  • 最后修改日期:2006-04-07
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