CIESC Journal

• 化工学报 • 上一篇    下一篇

RuO_2-SnO_2电极的XRD分析和电化学表面谱

陈延禧,夏晓霞,陈艳英,陈江   

  1. 天津大学应用化学系!天津300072,天津大学应用化学系!天津300072,天津大学应用化学系!天津300072,天津大学应用化学系!天津300072
  • 出版日期:1996-02-25 发布日期:1996-02-25

XRD STUDIES AND ELECTROCHEMICAL SURFACE SPECTRUM OF RuO_2-SnO_2 MIXED METAL OXIDES ELECTRODE

Chen Yanxi;Xia Xiaoxia;Chen Yanying;Chen Jiang(Department Of Applied Chemistry,Tianjin University,Tianjin 300072)   

  • Online:1996-02-25 Published:1996-02-25

摘要: 采用X射线衍射法研究了RuO_2-SnO_2混合金属氧化物电极的相结构和晶格参数.结果表明:RuO_2和SnO_2形成了具有金红石型结构的固溶体.但与RuO_2-TiO_2电极比较,晶粒较为细小,因此涂层较致密.采用循环伏安法研究了电极的活性表面(q~*),结果显示,RuO_2-SnO_2电极具有较小的电极外表面和较大的电极内表面.上述结果有助于说明RuO_2-SnO_2电极稳定性提高的原因,同时也由于形成了更稳定的RuO_2-SnO_2化合物.

Abstract: The phase structure and lattice constants of RuO_2-SnO_2 mixed metal oxides electrode was investigated by XRD.It was found that mixed oxides system formed a solid solution of RuO_2- SnO_2 with a rutile- type structure,but it had a smaller crystalline size and more compact than the RuO_2-TiO_2 system. Cyclic voltammetry provided information about electrochemically active surface area(q).The results indicated that for RuO- SnO_2 (associated with the external surface)was less and (associated with the internal surtface) was bigger than that of RuO_2-TiO_2. The enhancement of stability for Ru-Sn can be attributed to more compact oxide layer and the formation of a stable Ru-Sn compound.

中图分类号: