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Aqueous Manganese Dioxide Ink for High Performance Capacitive Energy Storage Devices

Published online by Cambridge University Press:  16 May 2016

Jiasheng Qian ,
Shu Ping Lau  and
Jikang Yuan
Jiasheng Qian*
Affiliation:
Department of Applied Physics, the Hong Kong Polytechnic University, Hong Kong SAR
Shu Ping Lau
Affiliation:
Department of Applied Physics, the Hong Kong Polytechnic University, Hong Kong SAR
Jikang Yuan
Affiliation:
Department of Applied Physics, the Hong Kong Polytechnic University, Hong Kong SAR
*
*(Email: js.qian@connect.polyu.hk)
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Abstract

We report a simple approach to fabricate high performance energy storage devices based on aqueous inorganic ink comprised of hexagonal MnO2 nanosheets. The MnO2 ink exhibits long term stability. Continuous thin films can be formed on various substrates without using any binder. To obtain a flexible electrode for capacitive energy storage, we printed the MnO2 ink on commercially available A4 paper pre-treated by multi-walled carbon nanotubes. The electrode exhibited a maximum specific capacitance of 90.8 mF/cm2. The electrode could maintain 98.7% capacitance retention for 1,000 cycles at 10 mV/s. The MnO2 ink could be a potential candidate for large-scale production of flexible and printable electronic devices for energy storage and conversion.

Keywords

energy storagenanostructureelectronic material
Type
Articles
Information
MRS Advances , Volume 1 , Issue 53: Energy and Environment , 2016 , pp. 3573 - 3578
Copyright
Copyright © Materials Research Society 2016 

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References

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