Flexible polypyrrole/copper sulfide/bacterial cellulose nanofibrous composite membranes as supercapacitor electrodes

Carbohydr Polym. 2017 Feb 10:157:344-352. doi: 10.1016/j.carbpol.2016.10.004. Epub 2016 Oct 4.

Abstract

Polypyrrole (PPy) and copper sulfide (CuS) have been successfully deposited on bacterial cellulose (BC) membranes to prepare nanofibrous composite electrodes of PPy/CuS/BC for flexible supercapacitor applications. The introduction of CuS remarkably improves the specific capacitance and cycling stability of BC-based electrodes. The specific capacitance of the supercapacitors based on the PPy/CuS/BC electrodes can reach to about 580Fg-1 at a current density of 0.8mAcm-2 and can retain about 73% of their initial value after 300 cycles, while the PPy/BC-based device could retain only 21.7% after 300 cycles. This work provides a promising approach to fabricate cost-effective and flexible nanofibrous composite membranes for high-performance supercapacitor electrodes.

Keywords: Bacterial cellulose; Copper sulfide; Flexible supercapacitor; Nanofibrous composite membranes; Polypyrrole.

MeSH terms

  • Cellulose / chemistry*
  • Copper / chemistry*
  • Electrodes*
  • Nanofibers / chemistry*
  • Polymers / chemistry*
  • Pyrroles / chemistry*
  • Sulfides / chemistry*

Substances

  • Polymers
  • Pyrroles
  • Sulfides
  • polypyrrole
  • Copper
  • Cellulose