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Supercapacitor electrodes with high active mass loading

Published online by Cambridge University Press:  22 August 2018

R. Poon  and
I. Zhitomirsky
R. Poon
Affiliation:
Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S4L7, Canada
I. Zhitomirsky*
Affiliation:
Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S4L7, Canada
*
Address all correspondence to I. Zhitomirsky at E-mail: [email protected]
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Abstract

We report the fabrication and testing of MnO2–carbon nanotube (NT) electrodes for supercapacitors (SCap) with high active mass (AM). Cetylpyridinium chloride surfactant was used as a capping agent for synthesis and a phase transfer agent for the liquid–liquid extraction. Water immiscible solvent, n-butanol, was used as a receiving and reducing medium for the synthesis of MnO2 from cetylpyridinium permanganate. Improved co-dispersion and nanoscale mixing of MnO2 and NT enabled the fabrication of advanced electrodes with mass loading of 42–61 mg/cm2, ratio of AM to current collector mass of 0.63–0.91, which showed the highest capacitance of 8.95 F/cm2.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1135 - 1138
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Copyright
Copyright © Materials Research Society 2018 

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