Growth Kinetics of Nickel Crystals in Nanopores

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• 作者：Cuiyan Yu ; Yanwu Xie ; Tao Xu ; Yan Chen ; Xiaohong Li ; Wei Li ; Baoting Liu ; Xiangyi Zhang
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：September 2, 2009
• 年：2009
• 卷：9
• 期：9
• 页码：3840-3843
• 全文大小：718K
• 年卷期：v.9,no.9(September 2, 2009)
• ISSN：1528-7505

文摘

The well-controlled synthesis of perfect and homogeneous nanowires requires a fundamental understanding of their growth kinetics. In the present study, we succeeded in studying for the first time the growth kinetics of electrodeposited Ni crystals in nanopores by employing the temperature-dependent rate constants yielded from deposition current−time curves. A small growth activation energy E_a = 0.25 ± 0.01 eV and prefactor t_E,0⁻¹ = 4.5 ± 0.3 s⁻¹ are determined for the Ni crystals in 25 nm diameter pores, and they increase with the pore diameter following the Meyer−Neldel compensation rule. On the basis of these studies, the growth mechanism of electrodeposited Ni nanowires has been revealed.