Effect of polar solvent acetonitrile on the electrochemical behavior of polyaniline in ionic liquid electrolytes

Zhang Jun-Ling; Zhang Xiao-gang; Xiao Fang; Hu Feng-Ping

doi:10.1016/j.jcis.2005.01.077

Effect of polar solvent acetonitrile on the electrochemical behavior of polyaniline in ionic liquid electrolytes

J Colloid Interface Sci. 2005 Jul 1;287(1):67-71. doi: 10.1016/j.jcis.2005.01.077.

Authors

Zhang Jun-Ling¹, Zhang Xiao-gang, Xiao Fang, Hu Feng-Ping

Affiliation

¹ Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, People's Republic of China.

PMID: 15914149
DOI: 10.1016/j.jcis.2005.01.077

Abstract

Polyaniline film was electropolymerized in organic acidic media (CF3COOH) and then investigated by cyclic voltammetry, AC impedance, and galvanostatic charging and discharging tests in ionic liquid-1-methyl-3-butylimidazolium hexafluorophosphate (BMIPF6) and the mixture electrolytes of BMIPF6 and acetonitrile (ACN) with different ratios. The results showed that the polymer in mixture of BMIPF6 and ACN have lower solution resistance, higher cycle life, and higher electrochemical capacitance. The relationship of the peak current to the scan rates provides some insight into the nature of the polyaniline film switching reaction in different electrolytes.