Template-Free Bipotentiostatic Deposition of Thermoelectric BixTey Nano Arrays - Journal of Materials Science and Chemical Engineering

MSCE > Vol.5 No.1, January 2017

Template-Free Bipotentiostatic Deposition of Thermoelectric BixTey Nano Arrays ()

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DOI: 10.4236/msce.2017.51001 1,820 Downloads 2,452 Views

Author(s)

Xin Bo^1,2, Feng Wang², Chuan Zhao¹

Affiliation(s)

¹School of Chemistry, the University of New South Wales, Sydney, Australia.
²State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, China.

ABSTRACT

Monodispersed Bi-Tenano arrays are achieved via template-free bipotentiostatic deposition. The diameter and length of individual nanorod is ~80 nm and ~250 nm respectively. The electrodeposition process is demonstrated to follow a two-step mechanism: an instantaneous reductive potential is applied to form dispersive nuclei, then a reverse oxidative potential strips partial Bi atoms to prevent further cross-growth. Repeatedly, the nano arrays film is obtained eventually. The thermoelectric properties of the obtained Bi-Tenano arrays such as electrical resistance, carrier density, Seebeck coefficient and power factor are measured to be 2.438 × 10-4 Ω·m, 4.251 × 1020 cm-3, -25.892 μV·K-1, 2.750 × 10-6 W·m-1·K2, respectively.

KEYWORDS

Thermoelectric Materials, Bismuth Telluride, Nano Arrays, Template-Free, Electrodeposition

Share and Cite:

Bo, X. , Wang, F. and Zhao, C. (2017) Template-Free Bipotentiostatic Deposition of Thermoelectric BixTey Nano Arrays. Journal of Materials Science and Chemical Engineering, 5, 1-7. doi: 10.4236/msce.2017.51001.

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