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Journal of Nanomaterials
Volume 2013 (2013), Article ID 426983, 11 pages
http://dx.doi.org/10.1155/2013/426983
Research Article

Synthesis of Polypyrrole Inverse Opal in [bmim] Containing Acetonitrile and the Application of the Inverse Opal in Cell Prototype

1Nano-Science and Technology Research Center, Shanghai University, Shanghai 200444, China
2College of Physical Science and Technology, Huazhong Normal University, Wuhan 430079, China

Received 19 November 2012; Accepted 6 December 2012

Academic Editor: Yongfeng Luo

Copyright © 2013 Wei Yan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Most primary cells use Zn or Li as the anode, a metallic oxide as the cathode, and an acidic or alkaline solution or moist past as the electrolytic solution. In this paper, highly ordered polypyrrole (PPy) inverse opals have been successfully synthesized in the acetonitrile solution containing [bmim]PF6. PPy films were prepared under the same experimental conditions. Cyclic voltammograms of the PPy film and the PPy inverse opal in neutral phosphate buffer solution (PBS) were recorded. X-ray photoelectron spectroscopy technique was used to investigate the structural surface of the PPy films and the PPy inverse opals. It is found that the anions kept dedoping from the PPy films during the potential scanning process, resulting in the electrochemical inactivity. Although anions also kept dedoping from the PPy inverse opals, the anions from PBS could dope into the inverse opal, explaining why the PPy inverse opals kept their electrochemical activity. An environmental friendly cell prototype was constructed, using the PPy inverse opal as the anode. The electrolytes in both the cathodic and anodic half-cells were neutral PBSs. The open-circuit potential of the cell prototype reached 0.487 V and showed a stable output over several hundred hours.