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One-step fabrication of binder-free three-dimensional Co3O4 electrodes by Reactive Spray Deposition Technology for application in high-performance supercapacitors

Published online by Cambridge University Press:  22 April 2018

Yang Wang ,
Junkai He ,
Justin Roller  and
Radenka Maric
Yang Wang*
Affiliation:
University of Connecticut, 97 N Eagleville Rd, Storrs, CT 06269, USA
Junkai He
Affiliation:
University of Connecticut, 97 N Eagleville Rd, Storrs, CT 06269, USA
Justin Roller
Affiliation:
Thermo Fisher Scientific, 5350 NE Dawson Creek Drive, Hillsboro, OR 97124, USA
Radenka Maric
Affiliation:
University of Connecticut, 97 N Eagleville Rd, Storrs, CT 06269, USA
*
Address all correspondence to Yang Wang at yang.2.wang@uconn.edu
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Abstract

Binder-free three-dimensional Co3O4 electrodes are fabricated by an economical and scalable one-step flame combustion method, namely Reactive Spray Deposition Technology. The electrodes are composed of porous nanostructured Co3O4 uniformly distributed throughout the conductive substrate. In the absence of any further optimization on the processing conditions, the as-synthesized electrodes demonstrate high capacitance of 567 F g−1 at 1.5 A g−1, excellent rate capability, and stable cycling performance with a capacity retention ratio of 96.7% after 1000 charge/discharge cycles from the three-electrode half-cell testing. This study presents the pathway to a significantly simplified manufacturing process of three-dimensional electrodes with the desirable porous nanostructure.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 2 , June 2018 , pp. 597 - 603
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Copyright
Copyright © Materials Research Society 2018 

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