高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (5): 909.doi:

• 研究论文 • 上一篇    下一篇

射频磁控溅射制备纳米晶Ni-Mo催化阴极及其表征

黄金昭1, 徐征1,3, 李海玲2, 亢国虎2, 王文静2   

  1. 1. 北京交通大学光电子技术研究所, 发光与光信息技术教育部重点实验室, 北京 100044;
    2. 北京市太阳能研究所, 北京 100083;
    3. 天津大学博士后流动站, 天津经济技术开发区博士后工作站, 天津中环三津有限公司分站, 天津 300457
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-05-10 发布日期:2006-05-10
  • 通讯作者: 徐征

Preparation and Characterization of Nanocrystalline Ni-Mo as Cathode Catalyst via RF Magnetron Sputtering

HUANG Jin-Zhao1, XU Zheng 1,3* , LI Hai-Ling2, KANG Guo-Hu2, WANG Wen-Jing2   

  1. 1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
    2. Beijing Solar Energy Research Institute, Beijing 100083, China;
    3. Postdoctoral Working Station of Tianjin University, Postdoctoral Working Station of Tianjin Economical and Technological Development Area, Tianjin Zhonghuan Sanjin Ltd. Tianjin 300457, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-05-10 Published:2006-05-10
  • Contact: XU Zheng

摘要:

利用射频磁控溅射方法制备了纳米晶Ni-Mo合金薄膜, 并将其用作太阳能光电化学制氢的阴极催化膜. 采用XRD, EDS, SEM和AFM对膜的晶型、 成分、 表面形貌以及晶粒尺寸进行了表征. 用稳态极化曲线和电化学交流阻抗谱对膜的析氢电化学特性进行了测试. 结果表明, 在较高的工作压强、 较低的衬底温度和较远的靶距下沉积的膜有较好的电化学性能, 晶粒的细化以及膜中Mo含量的增加有助于析氢催化活性的提高, 在电流密度为100 mA/cm2时析氢过电势为177.7 mV, 电化学脱附是膜上析氢反应的控制步骤.

关键词: 磁控溅射; Ni-Mo合金; 析氢反应; 纳米晶

Abstract:

Ni-Mo alloy thin film was prepared by RF magnetron sputtering method, and the film was used as cathode catalyst in photoelectrochemical hydrogen production from solar energy firstly. The crystallinity, composition, surface morphology and crystalline size were characterized by XRD, EDS, SEM and AFM experiments. The electrochemical behavior of the film were studied by steady-state polarization plots and electrochemical impedance spectroscopy. The results mentioned above show that under the conditions of the higher working pressure, lower substrate temperature and the longer target distance the Ni-Mo alloy thin film obtained possesses a good electrocatalytic activity. Additionally, the electrocatalytic activity of the film was also enhanced with the decreasing of crystalline size and increasing of molybdenum content. The hydrogen overpotential of hydrogen evolution reaction is 177.7 mV at current density 100 mA/cm2. The ratelimiting step was electrochemical desorption.

Key words: Magnetron sputtering; Ni-Mo alloy; Hydrogen evolution reaction; Nanocrystalline

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