期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 13, 页码 11823-11831出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b02287
关键词
Cellulose nanocrystal; Manganese dioxide; Supercapacitor; Electrochemical properties
资金
- Key Program for International S & T Innovation Cooperation Projects of China [2016YFE 0131400]
- Candidates of Young and Middle-Aged Academic Leader of Zhejiang Province
- Young Elite Scientists Sponsorship Program by CAST [2018QNRC001]
This work first reports cellulose nanocrystal/manganese dioxide (CNC-MnO2) electrode composites with flower-like MnO2 nanostructures via facile one-step in situ controlled synthesis. The denser flower-shaped nanostructures of CNC-MnO2 composites improved the electrolyte/electrode contact interface, providing nano-channels for ions diffusion that enhanced both electrolyte infiltration and active material utilization. A large specific capacitance of 306.3 F g(-1) with high energy density was achieved due to good cycling stability and ultralow resistance. Moreover, the CNC-MnO2 composites were successfully assembled into flexible solid-state supercapacitors with good electrochemical performance, excellent bending stability, and light up a commercial light-emitting diode. This study provides a simple approach to combine a CNC-MnO2 composite electrode with commercial textile and conductive polymers (e.g., polypyrrole) to produce wearable electronic/energy devices.
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