高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (4): 609.

• 论文 • 上一篇    下一篇

高择优锌-镍合金电沉积的现场ECSTM研究

谢兆雄, 毛秉伟, 杨防祖, 卓向东, 穆纪千, 田昭武   

  1. 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门, 361005
  • 收稿日期:1997-01-20 出版日期:1998-04-24 发布日期:1998-04-24
  • 通讯作者: 毛秉伟
  • 作者简介:谢兆雄,男,28岁,博士,讲师.
  • 基金资助:

    国家自然科学基金

In Situ Studies of Highly Oriented Zn-Ni Alloy Electroplating by Using ECSTM

XIE Zhao-Xiong, MAO Bing-Wei, YANG Fang-Zu, ZHUO Xiang-Dong, MU Ji-Qian, TIAN Zhao-Wu   

  1. State Key Laboratory of Physical Chemistry for Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1997-01-20 Online:1998-04-24 Published:1998-04-24

摘要: 采用"二步包封"法制备了性能良好的电化学STM针尖.以此为基础采用ECSTM现场研究了工艺条件下HOPG上高择优锌-镍合金的电沉积过程.研究结果表明这种高择优沉积层以侧向生长方式生长,而表面上电化学活性差的晶面构成了晶体生长过程的保留面,从而进一步形成了与基底表面方向一致的高择优沉积层,X射线研究表明这一择优面为(100)晶面.

关键词: ECSTM, 电沉积, 锌镍合金

Abstract: Based on a very effective “two-step-coating” method developed for ECSTM tip preparation, highly oriented Zn-Ni alloy electroplating was studied by in situ ECSTM. The in situ ECSTMobservation showed a 3-D growth of the Zn Ni alloy crystal in the absence of the additives. However, when additive AA-1/DIEwas introduced to the plating solution, the Zn-Ni alloy crystal grew along the step and layer by layer. This result indicated that the crystal plane of lower electrochemical activity may be reserved to form the highly oriented layer along the surface of the electrode. The X-ray diffraction patterns showed a highly oriented (100) crystal plane of the deposition along the electrode surface in the presence of AA-1/DIEadditive.

Key words: ECSTM, Electrodeposition, Zn-Ni alloy

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