Affiliations: [a] State Key Laboratory of Mechanical System and
Vibration, Shanghai Jiao Tong University, Shanghai, China | Université Laval, Canada | Tohoku University, Japan
Correspondence:
[*]
Corresponding author: Wenguang Zhang, State Key Laboratory of
Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai
200240, China. Tel./Fax: +86 21 3420 4851; E-mail: zhwg@sjtu.edu.cn
Abstract: In this paper, a simple and low-cost method for improving the
performance of the neural microelectrodes is reported. The electrochemical
polymerization of conducting polymer PANI and MnO_2
(manganese dioxide) were performed to modify the surface of the
microelectrode sites, then the morphology and electrical properties of the coated
microelectrodes were investigated to analysize the influence of
MnO_2
doping on the PANI coating. Results show that, the surface
morphology of PANI coating was improved by MnO_2 doping.
Compared to the electrode with PANI, the charge injection capacity of the
electrode with PANI-MnO_2 increased by about 7-fold and the
impedance decreased to the original 1/6 (@ 1 KHz). The electrical properties were more
stable and excellent with PANI-MnO_2 coating.
