Electrodeposited polypyrrole (PPy)/para (toluene sulfonic acid) (pTS) free-standing film for lithium secondary battery application

Authors

Irin Sultana, University of WollongongFollow
M M. Rahman, University of WollongongFollow
Sha Li, University of WollongongFollow
Jiazhao Wang, University of WollongongFollow
Caiyun Wang, University of WollongongFollow
Gordon G. Wallace, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

47034

Publication Details

Sultana, I, Rahman, MM, Li, S, Wang, J, Wang, C, Wallace, GG & Liu, H (2012), Electrodeposited polypyrrole (PPy)/para (toluene sulfonic acid) (pTS) free-standing film for lithium secondary battery application, Electrochimica Acta, 60, pp. 201-205.

Abstract

Highly flexible and bendable free-standing polypyrrole-para (toluene sulfonic acid) (PPy-pTS) films were prepared using the electropolymerization method. The films are soft, lightweight, mechanically robust, and highly electrically conductive. The films display a cauliflower-like structure consisting of micron-scale spherical grains, which are related to dopant intercalation in the polymeric chains. The electrochemical behaviour of the free-standing films was examined as cathode against lithium counter electrode. Electrochemical tests demonstrated that the PPy-pTS film with 30 min deposition time exhibited higher discharge capacity (85 mAh g⁻¹) beyond 80 cycles than the PPy-pTS films with 1 h deposition time (76 mAh g⁻¹) and 2 h deposition time (55 mAh g⁻¹) at 0.1 mA cm⁻² over a potential range of 2.5–4.3 V. The free-standing films can be used as electrode materials to satisfy the new market demand for flexible and bendable polymer batteries.