Rapid fabrication of supercapacitor electrodes using bionanoscaffolds in capillary microfluidics

This paper reports the utilization of capillary microfluidics to rapidly create nanostructure-patterned electrodes for energy storage applications. Using patterned photoresist as open-channel capillary microfluidics, Tobacco mosaic virus (TMV) bio-nanoscaffolds suspended in solution are autonomously...

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Bibliographic Details
Published in:Journal of physics. Conference series 2015-12, Vol.660 (1), p.12010
Main Authors: Zang, F, Chu, S, Gerasopoulos, K, Culver, J N, Ghodssi, R
Format: Article
Language:English
Subjects:
Electrodes
Electroless plating
Energy storage
Microfluidics
Oxidation
Photoresists
Physics
Planar structures
Supercapacitors
Tobacco
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Summary:This paper reports the utilization of capillary microfluidics to rapidly create nanostructure-patterned electrodes for energy storage applications. Using patterned photoresist as open-channel capillary microfluidics, Tobacco mosaic virus (TMV) bio-nanoscaffolds suspended in solution are autonomously delivered onto planar gold electrodes over a 1 cm2 area. The TMVs assemble on the electrode and form a dense bio-nanoscaffold layer due to enhanced evaporation-assisted assembly in the open-channel capillary microfluidic device within an hour. The TMV structures are coated with Ni NiO through electroless plating and thermal oxidation to form supercapacitor electrodes. The galvanostatic charge discharge cycle showed a 3.6-fold increase in areal capacitance for the nanostructured electrode compared to planar structures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/660/1/012010