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Self-assembled three-dimensional and compressible interdigitated thin-film supercapacitors and batteries

Author

Listed:
  • Gustav Nyström

    (and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, School of Chemical Science and Engineering)

  • Andrew Marais

    (and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, School of Chemical Science and Engineering)

  • Erdem Karabulut

    (and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, School of Chemical Science and Engineering)

  • Lars Wågberg

    (and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, School of Chemical Science and Engineering)

  • Yi Cui

    (Stanford University)

  • Mahiar M. Hamedi

    (and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, School of Chemical Science and Engineering)

Abstract

Traditional thin-film energy-storage devices consist of stacked layers of active films on two-dimensional substrates and do not exploit the third dimension. Fully three-dimensional thin-film devices would allow energy storage in bulk materials with arbitrary form factors and with mechanical properties unique to bulk materials such as compressibility. Here we show three-dimensional energy-storage devices based on layer-by-layer self-assembly of interdigitated thin films on the surface of an open-cell aerogel substrate. We demonstrate a reversibly compressible three-dimensional supercapacitor with carbon nanotube electrodes and a three-dimensional hybrid battery with a copper hexacyanoferrate ion intercalating cathode and a carbon nanotube anode. The three-dimensional supercapacitor shows stable operation over 400 cycles with a capacitance of 25 F g−1 and is fully functional even at compressions up to 75%. Our results demonstrate that layer-by-layer self-assembly inside aerogels is a rapid, precise and scalable route for building high-surface-area 3D thin-film devices.

Suggested Citation

  • Gustav Nyström & Andrew Marais & Erdem Karabulut & Lars Wågberg & Yi Cui & Mahiar M. Hamedi, 2015. "Self-assembled three-dimensional and compressible interdigitated thin-film supercapacitors and batteries," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8259
    DOI: 10.1038/ncomms8259
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