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电化学(中英文) ›› 1999, Vol. 5 ›› Issue (2): 125-129. 

• 研究论文 •    下一篇

热对镍阳极膜光电流测定的影响

陈航,江志裕   

  1. 复旦大学化学系
  • 收稿日期:1999-05-28 修回日期:1999-05-28 出版日期:1999-05-28 发布日期:1999-05-28

The influence of heat on the measurement of photocurrent at the anodic film of nickel electrode

Chen HangJiang Zhiyu*   

  1. (Dept.of Chem.,Fudan Univ.,Shanghai,200433
  • Received:1999-05-28 Revised:1999-05-28 Published:1999-05-28 Online:1999-05-28

摘要: 镍在碱溶液中阳极膜的形成和性质与化学电源和金属腐蚀等有关.在这方面已有较深入的研究报导.其研究方法也是多种多样,除一般的电化学方法[1,2]外,还有许多现场谱学方法,如:紫外_可见光谱[3],红外光谱[4],光热光谱[5],拉曼光谱[6],椭圆法[7...

Abstract: The influence of heat on the measurement of photocurrent for nickel electrode in 1 mol/L NaOH solution was investigated by using the photocurrent,photothermal and thermal current methods. It was found that the appearance of photocurrent in potential region of -0.750.20 V(vs. Hg/HgO electrode) was due to the p_type semiconductor properties of Ni(OH)2 film in which is agree with the previous report. In the Ni(OH)2/NiOOH redox potential region, the increase of temperature at the surface of working electrode during irradiation significantly promoted the electrochemical reaction strongly. The photocurrent observed in potential region 0.200.57 V is mainly attributed to the influence of heat produced upon irradiation. This is contrary to the view of the photoelectrochemical properties of the semiconductor reported in literature.

Key words: Photocurrent, Nickel electrode, Thermal current, Anodic film

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