Journal
ADVANCED SCIENCE
Volume 6, Issue 12, Pages -Publisher
WILEY
DOI: 10.1002/advs.201900529
Keywords
bacterial cellulose; kirigami; micro-supercapacitor arrays; MXene; stretchable
Categories
Funding
- National Natural Science Foundation of China [51871001, 51701002, 51602002]
- National Key R&D Program of China [2017YFA0403600]
- Open fund for Discipline Construction, Institute of Physical Science and Information Technology, Anhui University [S01003102]
- Outstanding Youth Fund of Anhui Province [1808085J10]
- International cooperation fund of Anhui Province [1704e1002209]
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Stretchable micropower sources with high energy density and stability under repeated tensile deformation are key components of flexible/wearable microelectronics. Herein, through the combination of strain engineering and modulation of the interlayer spacing, freestanding and lightweight MXene/bacterial cellulose (BC) composite papers with excellent mechanical stability and a high electrochemical performance are first designed and prepared via a facile all-solution-based paper-making process. Following a simple laser-cutting kirigami patterning process, bendable, twistable, and stretchable all-solid-state micro-supercapacitor arrays (MSCAs) are further fabricated. As expected, benefiting from the high-performance MXene/BC composite electrodes and rational sectional structural design, the resulting kirigami MSCAs exhibit a high areal capacitance of 111.5 mF cm(-2), and are stable upon stretching of up to 100% elongation, and in bent or twisted states. The demonstrated combination of an all-solution-based MXene/BC composite paper-making method and an easily manipulated laser-cutting kirigami patterning technique enables the fabrication of MXene-based deformable all-solid-state planar MSCAs in a simple and efficient manner while achieving excellent areal performance metrics and high stretchability, making them promising micropower sources that are compatible with flexible/wearable microelectronics.
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