物理化学学报 >> 1998, Vol. 14 >> Issue (01): 51-56.doi: 10.3866/PKU.WHXB19980110

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新型光化学电池高活性铂电极的研究

张亚利, 刘载维, 郭国霖, 桂琳琳   

  1. 北京大学化学与分子工程学院，物理化学研究所 100871|青岛大学应用化学系，266071
  • 收稿日期:1997-04-08 修回日期:1997-06-24 发布日期:1998-01-15
  • 通讯作者: 郭国霖

Study on High Activity Platinum Electrode on a New Type Photoelectrochemical Cell

Zhang Ya-Li, Liu Zai-Wei, Guo Guo-Lin, Gui Lin-Lin   

  1. Institute of Physics Chemistry,Peking University,Beijing 100871|Department of Applied Chemistry,Qingdao University,Qingdao 266071
  • Received:1997-04-08 Revised:1997-06-24 Published:1998-01-15
  • Contact: Guo Guo-Lin

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摘要：

应用循环伏安法，在导电玻璃表面沉积微量铂，制备新型光电化学电池的高比表面高活性对电极所获得的电极比表面最高达37m2•g-1;同时发现，该电极对I3-/I- 的质量交换电流密度随铂沉积量的增加而减小，而相对于宏观面积的交换电流密度几乎没有变化. 因此，在实验可控制的限度内，用微量的铂就可以获得高活性的对电极.

关键词: 电沉积, 铂电极, 循环伏安法

Abstract:

By using cyclic voltage method, nano-structured platinum was electrochemically deposited on the surface of conducting glass sheet, forming a high specific surface, high activity platinum electrode for the new type photoelectrochemical cell. The highest specific surface of platinum is 37 m2•g-1 in our work. The mass exchange current of such an electrode in I-3/I- electrolyte decreases with the increasing of the deposition amount of platinum, but the exchange current density almost does not change. So, in the region which could be controlled, the high activity electrode can be formed by using very small amount of platinum.

Key words: Electrodeposition;Pt electrode, Cyclic voltammetry