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High Rate Charge/Discharge Characteristics in Composite Film of Mesoporous TiO2 and Polyaniline for Photorechargeable Battery

Published online by Cambridge University Press:  21 March 2014

Teruaki Nomiyama ,
Kenta Sakamoto ,
Tomohito Yoshida ,
Akinori Kagiyama  and
Yuji Horie
Teruaki Nomiyama
Affiliation:
Department of Electrical and Electronics Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
Kenta Sakamoto
Affiliation:
Department of Electrical and Electronics Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
Tomohito Yoshida
Affiliation:
Department of Electrical and Electronics Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
Akinori Kagiyama
Affiliation:
Department of Electrical and Electronics Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
Yuji Horie
Affiliation:
Department of Electrical and Electronics Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
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Abstract

One of promising photorechargeable electrode, which has two functions of photovoltaic and electrical energy storage, is a composite film of mesoporous TiO2 and conducting polymer polyaniline. Galvanostatic charge/discharge characteristics of the TiO2-polyaniline composite were examined to reveal how fast the film was charged. The film with a specific capacity 60-120 mAh g–1 was found to be fully charged at high charging rate 20 mA cm–2 which is comparable to high performance solar cells. Such high charging rate was achieved by the compact polyaniline layer covering the large specific surface area of mesoporous TiO2 film.

Keywords

photovoltaicenergy storageporosity
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1606: Symposium W – Next Generation Photoconversion Materials and Devices , 2014 , jsapmrs13-1606-6052
Copyright
Copyright © Materials Research Society 2014 

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