On-demand solid-state artistic ultrahigh areal energy density microsupercapacitors

Ju Won Lee, Kwon Hyung Lee, Seong Sun Lee, David B. Ahn, Jinyoung Chun, Seo Hui Kang, Kwang Chul Roh, Sang Young Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Practical application of microsupercapacitors (MSCs) has been plagued by challenging task of achieving high energy density, shape/configuration diversity, and mechanical flexibility. Here, we present on-demand solid-state artistic ultrahigh areal energy density MSCs (a-MSCs). Direct-ink-writing (DIW) printing of rheology-tuned electrode inks and ultraviolet-curable gel polymer electrolyte inks allows the construction of thick electrodes with microscale features/arbitrary form factors and ionic isolation between unit cells (enabling electrochemical tailoring of voltages and capacitances in a single a-MSC). A nickel/gold-plated polyimide substrate is introduced as a flexible current collector that allows an increase in areal mass loading of electrodes. A DIW-printed polydimethylsiloxane layer shifts the location of a neutral plane to electrode-current collector interface to improve flexibility. The resulting a-MSC exhibits high areal energy density (61.34 µWh cm−2) and on-demand (in-series/in-parallel) cell configuration with artistic versatility. Moreover, the a-MSC is aesthetically unitized with complex-shaped electronic devices, acting as a customized practical monolithic power source.

Original languageEnglish
Pages (from-to)569-578
Number of pages10
JournalEnergy Storage Materials
Volume47
DOIs
Publication statusPublished - 2022 May

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Energy Engineering and Power Technology

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