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Intrinsically stretchable supercapacitors composed of polypyrrole electrodes and highly stretchable gel electrolyte

Journal Article


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Abstract


  • There has been an emerging interest in stretchable power sources compatible with flexible/wearable electronics. Such power sources must be able to withstand large mechanical strains and still maintain function. Here we report a highly stretchable H3PO4-poly(vinyl alcohol) (PVA) polymer electrolyte obtained by optimizing the polymer molecular weight and its weight ratio to H3PO4 in terms of conductivity and mechanical properties. The electrolyte demonstrates a high conductivity of 3.4 × 10-3 S cm-1, and a high fracture strain at 410% elongation. It is mechanically robust with a tensile strength of 2 MPa and a Young's modulus of 1 MPa, and displays a small plastic deformation (5%) after 1000 stretching cycles at 100% strain. A stretchable supercapacitor device has been developed based on buckled polypyrrole electrodes and the polymer electrolyte. The device shows only a small capacitance loss of 5.6% at 30% strain, and can retain 81% of the initial capacitance after 1000 cycles of such stretching. © 2013 American Chemical Society.

Publication Date


  • 2013

Citation


  • Zhao, C., Wang, C., Yue, Z., Shu, K. & Wallace, G. G. (2013). Intrinsically stretchable supercapacitors composed of polypyrrole electrodes and highly stretchable gel electrolyte. ACS Applied Materials and Interfaces, 5 (18), 9008-9014.

Scopus Eid


  • 2-s2.0-84885039416

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1909&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/908

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 9008

End Page


  • 9014

Volume


  • 5

Issue


  • 18

Place Of Publication


  • United States

Abstract


  • There has been an emerging interest in stretchable power sources compatible with flexible/wearable electronics. Such power sources must be able to withstand large mechanical strains and still maintain function. Here we report a highly stretchable H3PO4-poly(vinyl alcohol) (PVA) polymer electrolyte obtained by optimizing the polymer molecular weight and its weight ratio to H3PO4 in terms of conductivity and mechanical properties. The electrolyte demonstrates a high conductivity of 3.4 × 10-3 S cm-1, and a high fracture strain at 410% elongation. It is mechanically robust with a tensile strength of 2 MPa and a Young's modulus of 1 MPa, and displays a small plastic deformation (5%) after 1000 stretching cycles at 100% strain. A stretchable supercapacitor device has been developed based on buckled polypyrrole electrodes and the polymer electrolyte. The device shows only a small capacitance loss of 5.6% at 30% strain, and can retain 81% of the initial capacitance after 1000 cycles of such stretching. © 2013 American Chemical Society.

Publication Date


  • 2013

Citation


  • Zhao, C., Wang, C., Yue, Z., Shu, K. & Wallace, G. G. (2013). Intrinsically stretchable supercapacitors composed of polypyrrole electrodes and highly stretchable gel electrolyte. ACS Applied Materials and Interfaces, 5 (18), 9008-9014.

Scopus Eid


  • 2-s2.0-84885039416

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1909&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/908

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 9008

End Page


  • 9014

Volume


  • 5

Issue


  • 18

Place Of Publication


  • United States