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Materials Research Innovations Volume 19, 2015 - Issue 4
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Research Papers

Electronic double layer supercapacitor based on three-dimensional silicon microchannel plates in organic electrolyte

Y. W. XuKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, China
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S. H. XuKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, ChinaCorrespondence[email protected]
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M. LiKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, China;Department of Physics and Material ScienceCity University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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Y. P. ZhuKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, China
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L. J. ZhouKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, China
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L. W. WangKey Laboratory of Polar Materials and DevicesMinistry of Education and Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai200241, China;Department of Physics and Material ScienceCity University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, ChinaCorrespondence[email protected]
&
P. K. ChuDepartment of Physics and Material ScienceCity University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
 show all
Pages 303-309 | Received 07 Sep 2014, Accepted 19 Nov 2014, Published online: 02 Dec 2014
 
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Abstract

Spurred by the fast development and commercial appeal of the energy storage device, supercapacitor with large capacity and wide potential range is being more and more popular. An electronic double layer supercapacitor consisting of three-dimensional silicon microchannel plates and electroplated MnO2 nanoflakes as the active materials of the positive electrode is fabricated and evaluated systematically in an organic electrolyte (1M LiClO4 in propylene carbonate). Its composition, morphology, electrochemical impedance and charge storage mechanism are studied and compared to that of a planar structure. The silicon microchannel plates increase the specific area for loading of active materials. This supercapacitor with a large aspect ratio delivers excellent capacitive performance in limited space and weight. A single device made of the materials can power light emitting diodes, demonstrating its commercial potential.

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