Loading...

Diffusion-controlled growth model for electrodeposited cobalt nanowires in highly ordered aluminum oxide membrane

Ghahremaninezhad, A ; Sharif University of Technology | 2010

1424 Viewed
  1. Type of Document: Article
  2. DOI: 10.1149/1.3503348
  3. Publisher: 2010
  4. Abstract:
  5. This work studies the electrochemical growth behavior of cobalt nanowires in highly ordered aluminum oxide membrane. Considering the electrodeposition of metallic nanowires, cation concentration profile in each nano pore was calculated. With assumption of linear diffusion zone on the growing surface of nanowires, a modified Cottrell equation was evaluated. To confirm the model, the Co nanowires were electrodeposited into porous anodic aluminum oxide (AAO) templates and the mechanism of deposition was studied. Comparing the results of model and the experiments has proved the accuracy of the model. Also, it was observed that the growth of the Co nanowires was controlled mainly by diffusion process. With these considerations, the diffusion coefficient of the Co 2+ cation in pore was determined about D = 2.14×10-5 cm2s-1. SEM and TEM analysis showed high density and uniform nanowires that retained the shape of pores
  6. Keywords:
  7. Aluminum oxides ; Cation concentrations ; Co nanowires ; Cottrell equation ; Diffusion controlled growth ; Diffusion process ; Electrochemical growth ; Electrodeposited cobalt ; Growing surfaces ; High density ; Linear diffusion ; Metallic nanowires ; Porous anodic aluminum oxides ; SEM and TEM ; Uniform nanowires ; Work study ; Aluminum ; Aluminum coatings ; Anodic oxidation ; Carbon nanotubes ; Cobalt ; Diffusion ; Electrodeposition ; Energy conversion ; Fullerenes ; Oxides ; Positive ions ; Process control ; Nanowires
  8. Source: ECS Transactions, 25 April 2010 through 30 April 2010, Vancouver, BC ; Volume 28, Issue 17 , 2010 , Pages 13-25 ; 19385862 (ISSN) ; 9781607681939 (ISBN)
  9. URL: http://ecst.ecsdl.org/content/28/17/13.short