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Stretchable, weavable coiled carbon nanotube/MnO2/polymer fiber solid-state supercapacitors

Journal Article


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Abstract


  • Fiber and yarn supercapacitors that are elastomerically deformable without performance loss are sought for such applications as power sources for wearable electronics, micro-devices, and implantable medical devices. Previously reported yarn and fiber supercapacitors are expensive to fabricate, difficult to upscale, or non-stretchable, which limits possible use. The elastomeric electrodes of the present solid-state supercapacitors are made by using giant inserted twist to coil a nylon sewing thread that is helically wrapped with a carbon nanotube sheet, and then electrochemically depositing pseudocapacitive MnO2 nanofibers. These solid-state supercapacitors decrease capacitance by less than 15% when reversibly stretched by 150% in the fiber direction, and largely retain capacitance while being cyclically stretched during charge and discharge. The maximum linear and areal capacitances (based on active materials) and areal energy storage and power densities (based on overall supercapacitor dimensions) are high (5.4 mF/cm, 40.9 mF/cm2, 2.6 μWh/cm2 and 66.9 μW/cm2, respectively), despite the engineered superelasticity of the fiber supercapacitor. Retention of supercapacitor performance during large strain (50%) elastic deformation is demonstrated for supercapacitors incorporated into the wristband of a glove.

Authors


  •   Choi, Changsoon (external author)
  •   Kim, Shi Hyeong (external author)
  •   Sim, Hyeon Jun. (external author)
  •   Lee, Jae Ah. (external author)
  •   Choi, A Young (external author)
  •   Kim, Youn Tae. (external author)
  •   Lepro, Xavier (external author)
  •   Spinks, Geoff M.
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2015

Citation


  • Choi, C., Kim, S., Sim, H., Lee, J. Ah., Choi, A., Kim, Y. Tae., Lepro, X., Spinks, G. M., Baughman, R. H. & Kim, S. (2015). Stretchable, weavable coiled carbon nanotube/MnO2/polymer fiber solid-state supercapacitors. Scientific Reports, 5 9387-1-9387-6.

Scopus Eid


  • 2-s2.0-84925435026

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2373&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1371

Start Page


  • 9387-1

End Page


  • 9387-6

Volume


  • 5

Abstract


  • Fiber and yarn supercapacitors that are elastomerically deformable without performance loss are sought for such applications as power sources for wearable electronics, micro-devices, and implantable medical devices. Previously reported yarn and fiber supercapacitors are expensive to fabricate, difficult to upscale, or non-stretchable, which limits possible use. The elastomeric electrodes of the present solid-state supercapacitors are made by using giant inserted twist to coil a nylon sewing thread that is helically wrapped with a carbon nanotube sheet, and then electrochemically depositing pseudocapacitive MnO2 nanofibers. These solid-state supercapacitors decrease capacitance by less than 15% when reversibly stretched by 150% in the fiber direction, and largely retain capacitance while being cyclically stretched during charge and discharge. The maximum linear and areal capacitances (based on active materials) and areal energy storage and power densities (based on overall supercapacitor dimensions) are high (5.4 mF/cm, 40.9 mF/cm2, 2.6 μWh/cm2 and 66.9 μW/cm2, respectively), despite the engineered superelasticity of the fiber supercapacitor. Retention of supercapacitor performance during large strain (50%) elastic deformation is demonstrated for supercapacitors incorporated into the wristband of a glove.

Authors


  •   Choi, Changsoon (external author)
  •   Kim, Shi Hyeong (external author)
  •   Sim, Hyeon Jun. (external author)
  •   Lee, Jae Ah. (external author)
  •   Choi, A Young (external author)
  •   Kim, Youn Tae. (external author)
  •   Lepro, Xavier (external author)
  •   Spinks, Geoff M.
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2015

Citation


  • Choi, C., Kim, S., Sim, H., Lee, J. Ah., Choi, A., Kim, Y. Tae., Lepro, X., Spinks, G. M., Baughman, R. H. & Kim, S. (2015). Stretchable, weavable coiled carbon nanotube/MnO2/polymer fiber solid-state supercapacitors. Scientific Reports, 5 9387-1-9387-6.

Scopus Eid


  • 2-s2.0-84925435026

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2373&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1371

Start Page


  • 9387-1

End Page


  • 9387-6

Volume


  • 5