Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 20, Pages 6451-6458Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201204571
Keywords
carbon nanotubes; laminated structure; manganese dioxide; supercapacitors; tandem structure
Categories
Funding
- National Natural Science Foundation of China [51102271, 21001046, 51002059]
- 973 Program of China [2011CB933300]
- Program for New Century Excellent Talents of the University in China [NCET-11-0179]
- Science & Technology Commission of Shanghai Municipality [10DZ1210300]
- Natural Science Foundation of Shanghai [11ZR1436300]
- Shanghai Rising-Star Program [11QA1406400]
- Shanghai Municipal Human Resources and Social Security Bureau [2011033]
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High capacitance and high output voltage are two important research focuses of electrochemical supercapacitors. Herein we present two novel designs (laminated and tandem) of coin-cell supercapacitors based on a textile coated with active material. The fabric electrodes were prepared by dipping the non-woven cloth into a dispersion of carbon nanotubes and subsequent MnO2 electrodeposition. In the lamination configuration, several pieces of active-material-coated cloth were laminated to construct individual electrodes that enable fold-increased areal capacitances and excellent cycling stability. In the tandem structure, individual cells with solid-state electrolyte (polyvinyl alcohol/H3PO4) sandwiched between the fabric electrodes were stacked together to form a single device. The assembled device composed by ten unit cells was demonstrated to drive four LED digital screens in series with 10V output.
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