Journal
10TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM
Volume 34, Issue -, Pages 880-887Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2013.06.825
Keywords
Organic cathode material; Lithium ion battery; Two-electron redox; Cycle-stability
Funding
- Grants-in-Aid for Scientific Research [24750191] Funding Source: KAKEN
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The performance of 2,5-di-n-decyloxy-1,4-benzoquinone (DDBQ) as an active material for rechargeable lithium batteries was investigated. The prepared electrode in which DDBQ was incorporated showed an initial discharge capacity of 125 mAh/g(DDBQ) with an average voltage of 2.5 V vs. Li+/Li. The obtained discharge capacity corresponds to a benzoquinone-based two-electron redox behavior. In the cycle-life test, the prepared DDBQ-electrode showed a relatively good performance; it maintained about 60% of the initial capacity after 20 cycles. The observed cycle-stability was compared to those of the other dialkoxybenzoquinones bearing shorter alkoxy chains, such as the methoxy, ethoxy, and propoxy groups. The correlation between the cycle-stability and the solubility in the electrolyte solvent was discussed. (C) 2013 The Authors. Published by Elsevier B.V.
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