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Polypyrrole doped with redox-active poly(2-methoxyaniline-5-sulfonic acid) for lithium secondary batteries

Journal Article


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Abstract


  • Polypyrrole is a promising electrode material for flexible/bendable energy storage devices due to its inherent fast redox switching, mechanical flexibility, easy processability and being environmentally benign. However, its low attainable capacity limits its practical applications. Here, we synthesise a polypyrrole/poly(2-methoxyaniline-5-sulfonic acid) (PPy/PMAS) composite by incorporating redox-active PMAS into a PPy matrix via an electropolymerization method. For comparison, polypyrrole containing the electrochemically inert dopant p-toluenesulfonate (PPy-pTS) was prepared under the same conditions. The resultant PPy/PMAS film shows greatly improved electrochemical properties by harnessing the contribution from PMAS, i.e. higher specific capacity, better rate capability and improved cycling stability when used as a cathode material in a lithium secondary battery. It delivers a high specific capacity of 120.6 mAh g-1 at a current density of 0.1 A g-1, and retains about 88.5% of the capacity (106.7 mAh g-1) over 800 consecutive cycles at a high current density of 1 A g-1. © 2013 The Royal Society of Chemistry.

Publication Date


  • 2013

Citation


  • Yang, Y., Wang, C., Ashraf, S. & Wallace, G. G. (2013). Polypyrrole doped with redox-active poly(2-methoxyaniline-5-sulfonic acid) for lithium secondary batteries. RSC Advances, 3 (16), 5447-5452.

Scopus Eid


  • 2-s2.0-84878071843

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1755&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/755

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5447

End Page


  • 5452

Volume


  • 3

Issue


  • 16

Place Of Publication


  • United Kingdom

Abstract


  • Polypyrrole is a promising electrode material for flexible/bendable energy storage devices due to its inherent fast redox switching, mechanical flexibility, easy processability and being environmentally benign. However, its low attainable capacity limits its practical applications. Here, we synthesise a polypyrrole/poly(2-methoxyaniline-5-sulfonic acid) (PPy/PMAS) composite by incorporating redox-active PMAS into a PPy matrix via an electropolymerization method. For comparison, polypyrrole containing the electrochemically inert dopant p-toluenesulfonate (PPy-pTS) was prepared under the same conditions. The resultant PPy/PMAS film shows greatly improved electrochemical properties by harnessing the contribution from PMAS, i.e. higher specific capacity, better rate capability and improved cycling stability when used as a cathode material in a lithium secondary battery. It delivers a high specific capacity of 120.6 mAh g-1 at a current density of 0.1 A g-1, and retains about 88.5% of the capacity (106.7 mAh g-1) over 800 consecutive cycles at a high current density of 1 A g-1. © 2013 The Royal Society of Chemistry.

Publication Date


  • 2013

Citation


  • Yang, Y., Wang, C., Ashraf, S. & Wallace, G. G. (2013). Polypyrrole doped with redox-active poly(2-methoxyaniline-5-sulfonic acid) for lithium secondary batteries. RSC Advances, 3 (16), 5447-5452.

Scopus Eid


  • 2-s2.0-84878071843

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1755&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/755

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5447

End Page


  • 5452

Volume


  • 3

Issue


  • 16

Place Of Publication


  • United Kingdom