5,7,12,14-Pentacenetetrone as a High-Capacity Organic Positive-Electrode Material for Use in Rechargeable Lithium Batteries

The performance of 5,7,12,14-pentacenetetrone (PT) as an organic active material for rechargeable lithium batteries was investigated. A positive-electrode incorporating PT showed an initial discharge capacity of more than 300 mAh/g(PT) with an average voltage of 2.1 V vs. Li+/Li. The obtained discha...

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Bibliographic Details
Published inInternational journal of electrochemical science Vol. 6; no. 7; pp. 2905 - 2911
Main Authors Yao, Masaru, Senoh, Hiroshi, Sakai, Tetsuo, Kiyobayashi, Tetsu
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2011
Subjects
DFT calculation
High capacity
Lithium ion battery
Multi-electron redox
Organic cathode material
Lithium ion battery
DFT calculation
Organic cathode material
High capacity
Multi-electron redox
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Summary:The performance of 5,7,12,14-pentacenetetrone (PT) as an organic active material for rechargeable lithium batteries was investigated. A positive-electrode incorporating PT showed an initial discharge capacity of more than 300 mAh/g(PT) with an average voltage of 2.1 V vs. Li+/Li. The obtained discharge capacity corresponded to a four-electron redox behavior and is more than twice that of a conventional positive-electrode material, lithium cobalt oxide (LiCoO2). A quantum calculation based on the density functional theory (DFT) was also performed to clarify the mechanism of the electron-transfer in the PT crystal.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)18227-7