A stretchable, fully self-healable, temperature-tolerant, and water-proof supercapacitor using TUEG3 capped gold nanosheets on oxime-carbamate bonded polyurethane film and organohydrogel

Yeonji Choi, Mihyeon Park, Somin Kim, Kyungmo Gong, Jung Wook Kim, Dong Sik Kim, Jinyoung Lee, Gyusung Jung, Jiyoon Kim, Wonseok Yang, Dong Kwon Lim, Jeong Sook Ha

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, we demonstrate a stretchable, fully self-healable, temperature-tolerant, and water-proof supercapacitor with high electrochemical performance via a deliberate selection of materials and device architecture. Distinct from previous works, our whole supercapacitor is stretchable and self-healable, owing to the application of specially devised stretchable and self-healing oxime-carbamate based polyurethane (OC-PU) substrate film, self-healing polymer (poly(ether-thioureas) triethylene glycol) capped Au nanosheet current collector (TUEG3-Au NS) and newly synthesized organohydrogel electrolyte. The fabricated supercapacitor exhibits a high electrochemical performances (specific capacitance of 1650.5F g−1, energy density of 14.58 Wh kg−1, power density of 2181.75 W kg−1, and capacitance retention of 89 % after 10,000 cycles) with a capacitance retention of 81 % over stretching by 40 % even after repetitive healing from damages, the self-healing of all components (full self-healing) over repetitive damages with a capacitance recovery by over 83 %, a wide operational temperature range from −20 to 60 °C with retaining over 91 % of capacitance at RT. Furthermore, a μ-LED is stably operated with the supercapacitor immersed in water regardless of the mechanical deformation and self-healing from damage due to self-bonded encapsulation layer of hydrophobic OC-PU film. With a vertically integrated patch device consisting of the fabricated supercapacitor and a strain sensor, bio-signals are detected using the stored energy of the supercapacitor even after self-healing from damages over the temperature range from −20 to 60 °C. This work suggests the high application potential of our high performance multi-functional supercapacitor as an integrated energy storage device for wearable electronics featuring longevity and stability under harsh environments.

Original languageEnglish
Article number150931
JournalChemical Engineering Journal
Volume488
DOIs
Publication statusPublished - 2024 May 15

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

Keywords

  • Bio-signal monitoring
  • Durable energy storage device
  • Multi-functional supercapacitor
  • Self-healing
  • Skin-attachable electronics
  • Stretchable
  • Temperature-tolerant

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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