Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (2): 182-186. Previous Articles     Next Articles

Original Articles

镍铂修饰n型硅电极光电解析氧

李怀祥;李国铮;王士勋   

  1. 山东师范大学化学系;山东大学化学系
  • 出版日期:1996-02-15 发布日期:1996-02-15

A study on water splitting of photoelectrolysis based on n/n^+-Si electrodes

LI HUAIXIANG;LI GUOZHAENG;WANG SHIXUN   

  • Online:1996-02-15 Published:1996-02-15

The splitting of water in a solution containing 1.0mol·dm^-^3KOH is studied based on the semiconductor photoanodes, n/n^+-Si, by alkali-etching and modifying with Ni/Pt dual metal layer. The optimization photocurrent of 65.2mA·cm^-^2 for oxygen evolution is observed at 1.0V (vs. HgO/Hg electrode) with a light intensity of 90mW·cm^-^2. The photoanodes are stable during oxygen continuous evolution for 200 hours. Electrode surface analysis is carried out by using Electron Spectroscopy for Chemical Analysis (ESCA) system.

Key words: PLATINUM, NICKEL, PHOTO-ELECTROCHEMISTRY, PHOTOELECTROD, MODIFIED ELECTRODE, SURFACE MODIFICATION

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