Biaxially stretchable, integrated array of high performance microsupercapacitors

Yein Lim, Jangyeol Yoon, Junyeong Yun, Daeil Kim, Soo Yeong Hong, Seung Jung Lee, Goangseup Zi, Jeong Sook Ha

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

We report on the fabrication of a biaxially stretchable array of high performance microsupercapacitors (MSCs) on a deformable substrate. The deformable substrate is designed to suppress local strain applied to active devices by locally implanting pieces of stiff polyethylene terephthalate (PET) films within the soft elastomer of Ecoflex. A strain suppressed region is formed on the top surface of the deformable substrate, below which PET films are implanted. Active devices placed within this region can be isolated from the strain. Analysis of strain distribution by finite element method confirms that the maximum strain applied to MSC in the strain suppressed region is smaller than 0.02%, while that on the Ecoflex film is larger than 250% under both uniaxial strain of 70% and biaxial strain of 50%. The all-solid-state planar MSCs, fabricated with layer-by-layer deposited multiwalled carbon nanotube electrodes and patterned ionogel electrolyte of poly(ethylene glycol) diacrylate and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide having high-potential windows, are dry-transferred onto the deformable substrate and electrically connected in series and parallel via embedded liquid metal interconnection and Ag nanowire contacts. Liquid metal interconnection, formed by injecting liquid metal into the microchannel embedded within the substrate, can endure severe strains and requires no additional encapsulation process. This formed MSC array exhibits high energy and power density of 25 mWh/cm3 and 32 W/cm3, and stable electrochemical performance up to 100% uniaxial and 50% biaxial stretching. The high output voltage of the MSC array is used to light micro-light-emitting diode (μ-LED) arrays, even under strain conditions. This work demonstrates the potential application of our stretchable MSC arrays to wearable and bioimplantable electronics with a self-powered system. (Graph Presented).

Original languageEnglish
Pages (from-to)11639-11650
Number of pages12
JournalACS Nano
Volume8
Issue number11
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

liquid metals
polyethylene terephthalate
Liquid metals
Substrates
Polyethylene Terephthalates
axial strain
strain distribution
imides
elastomers
microchannels
Polyethylene terephthalates
radiant flux density
glycols
finite element method
nanowires
ethylene
light emitting diodes
flux density
carbon nanotubes
electrolytes

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Lim, Y., Yoon, J., Yun, J., Kim, D., Hong, S. Y., Lee, S. J., ... Ha, J. S. (2014). Biaxially stretchable, integrated array of high performance microsupercapacitors. ACS Nano, 8(11), 11639-11650. https://doi.org/10.1021/nn504925s

Biaxially stretchable, integrated array of high performance microsupercapacitors. / Lim, Yein; Yoon, Jangyeol; Yun, Junyeong; Kim, Daeil; Hong, Soo Yeong; Lee, Seung Jung; Zi, Goangseup; Ha, Jeong Sook.

In: ACS Nano, Vol. 8, No. 11, 01.01.2014, p. 11639-11650.

Research output: Contribution to journalArticle

Lim, Y, Yoon, J, Yun, J, Kim, D, Hong, SY, Lee, SJ, Zi, G & Ha, JS 2014, 'Biaxially stretchable, integrated array of high performance microsupercapacitors', ACS Nano, vol. 8, no. 11, pp. 11639-11650. https://doi.org/10.1021/nn504925s
Lim Y, Yoon J, Yun J, Kim D, Hong SY, Lee SJ et al. Biaxially stretchable, integrated array of high performance microsupercapacitors. ACS Nano. 2014 Jan 1;8(11):11639-11650. https://doi.org/10.1021/nn504925s
Lim, Yein ; Yoon, Jangyeol ; Yun, Junyeong ; Kim, Daeil ; Hong, Soo Yeong ; Lee, Seung Jung ; Zi, Goangseup ; Ha, Jeong Sook. / Biaxially stretchable, integrated array of high performance microsupercapacitors. In: ACS Nano. 2014 ; Vol. 8, No. 11. pp. 11639-11650.
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