Redox Activity of an Organosulfur Compound and Its Application to Polymer Lithium Batteries
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- HATOZAKI Osamu
- Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology
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- OYAMA Noboru
- Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology
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Abstract
<p>Redox activity of an organosulfur compound with multiple thiol groups and its application to a cathode active material of lithium batteries are described. To accelerate a slow redox reaction of organosulfur compounds such as 2,5-dimercapto-1,3,4-thiadiazole (DMcT), conducting polymer polyaniline (PAn) is mixed with organosulfur compounds, yielding a composite material. Within the composite, DMcT and PAn interact at molecular-level and the redox reaction of DMcT is successfully accelerated by PAn. The DMcT /PAn composite shows a promise as a high energy cathode active material with the discharge capacity of 185 Ah/kg-cathode and the average discharge voltage at 3.4 V. Furthermore, using a copper foil as a cathode current collector, battery performances of the composite cathode are significantly improved. The observed improvement is attributed to a formation of a complex between a copper ion and DMcT, which accelerates the redox reaction of DMcT. The discharge capacity of the composite cathode on a copper current collector is 225 Ah/kg-cathode. The discharge capacity is further increased to 500 Ah/kg-cathode by adding elemental sulfur to the composite.</p>
Journal
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- Electrochemistry
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Electrochemistry 67 (11), 1036-1041, 1999-11-05
The Electrochemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390845702322812928
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- NII Article ID
- 10004274687
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- NII Book ID
- AN00151637
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- ISSN
- 21862451
- 13443542
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- NDL BIB ID
- 4901443
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Allowed