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| Influence of process parameters on electrochemical and physical properties of sputtered iron-doped nickel oxide thin films | |
| 作者单位： | Key Laboratory of Luminescence and Optical Information Ministry of Education，Institute of Optoelectronic Technology，Beijing Jiaotong University，Key Laboratory of Luminescence and Optical Information，Ministry of Education，Institute of Optoelectronic Technology，Beijing Jiaotong University，Beijing Solar Energy Research Institute，Beijing Solar Energy Research Institute，Beijing Solar Energy Research Institute，Beijing 100044，China，Beijing 100044，China，Beijing 100083，China，Beijing 100083，China，Beijing 100083，China |
| 基金项目： | 北京交通大学博士科技创新基金;国家重点基础研究发展计划(973计划) |
| 摘 要： | 1Introduction A principal focus of modern research in electrocatalysis is to discover electrode materials that exhibit excellent electrochemical stability and show interesting activity towards typical electrochemical reaction[1?10].It is desirable that th… |
| 收稿时间： | 2005-11-19 |
Influence of process parameters on electrochemical and physical properties of sputtered iron-doped nickel oxide thin films |
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| Jin-zhao HUANG, Zhen XU, Hai-ling LI, Guo-hu KANG,Wen-jing WANG. Influence of process parameters on electrochemical and physical properties of sputtered iron-doped nickel oxide thin films[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(6): 1301-1306. DOI: 10.1016/S1003-6326(07)60010-7 | |
| Authors: | Jin-zhao HUANG Zhen XU Hai-ling LI Guo-hu KANG Wen-jing WANG |
| Affiliation: | aKey Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China bBeijing Solar Energy Research Institute, Beijing 100083, China |
| Abstract: | The iron-doped nickel oxide films used as oxygen evolution catalysts in the photoelectrochemical production of hydrogen from solar energy were deposited by means of RF reactive magnetron sputtering from a Ni-Fe alloy target in oxygen and argon atmosphere.The effects of processing parameters on the film properties,such as overpotential,composition,surface morphology and preferred orientation,were investigated.The electrochemical experiment,structural and compositional measurements indicate that the relative lower substrate temperature,higher RF power,higher working pressure and oxygen content are necessary to gain lower overpotential.The lowest overpotential of 251 mV is obtained at a current density of 80 mA/cm2.The existence of iron,which acts as activity site,and Ni3 ion is responsible for lowering overpotential.By analyzing SEM and XRD data,it is also noticed that an improvement in crystallinity,appropriate grain size and less crystalline phase contribute to an increased electrocatalytic activity in oxygen evolution reaction.These results mentioned above indicate that iron-doped nickel oxide is promising as an oxygen catalyst. |
| Keywords: | iron-doped nickel oxide films overpotential photoelectrochemical |
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