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Energies 2017, 10(11), 1886; doi:10.3390/en10111886

Charging Characteristics of Lithium Ion Battery Using Semi-Solar Modules of Polymer:Fullerene Solar Cells

1
Organic Nanoelectronics Laboratory and KNU Institute for Nanophotonics Applications (KINPA), Department of Chemical Engineering, School of Applied Chemical Engineering, Kyungpook National University, University Road 80, Daegu 41566, Korea
2
Priority Research Center, Research Institute of Advanced Energy Technology, Kyungpook National University, University Road 80, Daegu 41566, Korea
3
Polymer Rheology Laboratory, Department of Chemical Engineering, School of Applied Chemical Engineering, Kyungpook National University, University Road 80, Daegu 41566, Korea
4
Department of Chemical Engineering, Kyungpook National University, University Road 80, Daegu 41566, Korea
*
Authors to whom correspondence should be addressed.
Received: 24 October 2017 / Revised: 31 October 2017 / Accepted: 8 November 2017 / Published: 16 November 2017
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Abstract

The combination of lithium ion battery (LIB) and organic (polymer) solar cells is expected to deliver versatile self-rechargeable portable energy sources, but less attention has been paid to the charging characteristics of LIB-using polymer solar cells. Here we demonstrate that the LIB packs, which were prepared by using lithium cobalt oxide (LiCoO2) and graphite as a cathode and an anode, respectively, can be effectively charged by semi-solar modules of polymer:fullerene solar cells, of which bulk heterojunction (BHJ) layers are composed of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM). Results showed that the performance of semi-solar modules was not much degraded by connecting four single solar cells in series or in parallel, but their output power density was noticeably reduced by extending the number of single cells up to eight. The charging test disclosed that the output current density is of importance to speed up the LIB charging at the same output voltage. View Full-Text
Keywords: organic solar cells; polymer:fullerene bulk heterojunctions; semi-solar modules; lithium-ion battery (LIB); charging characteristics organic solar cells; polymer:fullerene bulk heterojunctions; semi-solar modules; lithium-ion battery (LIB); charging characteristics
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Song, M.; Lee, S.; Kim, D.; Lee, C.; Jeong, J.; Seo, J.; Kim, H.; Song, D.-I.; Kim, D.; Kim, Y. Charging Characteristics of Lithium Ion Battery Using Semi-Solar Modules of Polymer:Fullerene Solar Cells. Energies 2017, 10, 1886.

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