Electrochemically synthesized polypyrrole/graphene composite film for lithium batteries

Authors

Yang Yang, University of WollongongFollow
Caiyun Wang, University of WollongongFollow
Binbin Yue, University of Wollongong
Sanjeev Gambhir, University of WollongongFollow
Chee O. Too, University of WollongongFollow
Gordon G. Wallace, University of WollongongFollow

RIS ID

52792

Publication Details

Yang, Y., Wang, C., Yue, B., Gambhir, S., Too, C. O. & Wallace, G. G. (2012). Electrochemically synthesized polypyrrole/graphene composite film for lithium batteries. Advanced Energy Materials, 2 (2), 266-272.

Abstract

A polypyrrole/reduced graphene oxide (PPy/r-GO) composite film is prepared by inducing electrochemical reduction of graphene oxide incorporated into PPy as the dopant. This film has a wrinkled surface morphology with a porous structure as revealed by scanning electron microscopy. Its porous structure is attributed to the physical nature of the GO sheets, providing a templating effect during PPy deposition. This PPy/r-GO composite is characterized using in-situ UV-visible spectroelectrochemistry as well as Raman and Fourier-transform IR spectroscopy. The PPy/r-GO material shows greatly improved electrochemical properties, i.e., a high rate capability and excellent cycling stability when used as a cathode material in a lithium ion battery. It also delivers a large reversible capacity when used as an anode material, and this is mainly attributed to the reduced graphene oxide (r-GO) component.