Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12975
ชื่อเรื่อง: Enhanced specific capacitance of an electrophoretic deposited MnO2-carbon nanotube supercapacitor
ผู้แต่ง: Tagsin P.
Klangtakai P.
Harnchana V.
Amornkitbamrung V.
Pimanpang S.
Kumnorkaew P.
วันที่เผยแพร่: 2017
บทคัดย่อ: MnO2 and MnO2-carbon nanotubes (CNT) composite films were grown directly on stainless- steel substrates using an electrophoretic process employing supercapacitor electrodes. An electrophoretic MnO2 film with a nanoplate-like structure was observed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Supercapacitor performance was studied using cyclic voltammetry (CV), charge-discharge (CD) and electrochemical impedance spectroscopy (EIS). The specific capacitance (SC) of the electrophoretic MnO2 film was 60 F/g at 1 A/g, with a 38.33% retention of the initial SC values after 1000 cycles. The low SC value of the MnO2 films was attributed to the high series and charge-transfer resistances of 1.70 Ω and 3.20, respectively. The MnO2-CNT composites with the addition of 0.04, 0.06 and 0.08 g CNT to the electrophoretic MnO2 film were found to greatly increase the SC to 300, 206 and 169 F/g at 1 A/g, respectively. The series and charge-transferred resistances of MnO2-CNT composite films decreased to 1.38 - 1.52 Ω and 2.62 - 2.86 Ω, respectively. The SC improvement of the composite electrodes was attributed to presence of two active storage materials (MnO2 and CNT), a high film specific surface area and electrical conductivity. © 2017, The Korean Physical Society.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12975
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85039453684&doi=10.3938%2fjkps.71.997&partnerID=40&md5=f5cb51611a5306ae263b53ce47fa9aa7
ISSN: 3744884
Appears in Collections:Scopus 1983-2021

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