A pentakis-fused tetrathiafulvalene system extended by cyclohexene-1,4-diylidenes: a new positive electrode material for rechargeable batteries utilizing ten electron redox
Description
Pentakis-fused TTF derivatives extended with two cyclohexene-1,4-diylidenes (2a and 2b) have been successfully synthesized. Cyclic voltammetry of the tetrakis(2-ethylhexylthio) derivative (2b) has revealed that it exhibits five stages of the redox process to form 2b10+. A coin-type cell composed of a positive electrode incorporating the tetrakis(methylthio) derivative (2a) exhibits a discharge capacity of 196 mA h g−1, which corresponds to participation of a ten electron redox. It shows a high performance of energy density of 700 mW h g−1 and an output power density of 69 W g−1 with a relatively stable cycle-life performance (72% of the initial discharge capacity after 30 cycles).
Journal
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- Journal of Materials Chemistry A
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Journal of Materials Chemistry A 2 (19), 6747-, 2014
Royal Society of Chemistry (RSC)
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Details 詳細情報について
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- CRID
- 1360848658511799936
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- ISSN
- 20507496
- 20507488
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- Article Type
- journal article
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- Data Source
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- Crossref
- KAKEN
- OpenAIRE
