Abstract
We demonstrate all-solid-state flexible supercapacitors with high physical flexibility, desirable electrochemical properties, and excellent mechanical integrity, which were realized by rationally exploiting unique properties of bacterial nanocellulose, carbon nanotubes, and ionic liquid based polymer gel electrolytes. This deliberate choice and design of main components led to excellent supercapacitor performance such as high tolerance against bending cycles and high capacitance retention over charge/discharge cycles. More specifically, the performance of our supercapacitors was highly retained through 200 bending cycles to a radius of 3 mm. In addition, the supercapacitors showed excellent cyclability with C sp (∼20 mF/cm 2) reduction of only <0.5% over 5000 charge/discharge cycles at the current density of 10 A/g. Our demonstration could be an important basis for material design and development of flexible supercapacitors.
Original language | English |
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Pages (from-to) | 6400-6406 |
Number of pages | 7 |
Journal | ACS nano |
Volume | 6 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2012 Jul 24 |
Keywords
- bacterial nanocellulose
- carbon nanotube
- ion gel
- supercapacitor
- triblock copolymer
ASJC Scopus subject areas
- General Materials Science
- General Engineering
- General Physics and Astronomy