| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Research Abstract |
In order to develop novel lithium ion conductive polymers with high ion conductivity, copolymers composed of an oligoether monomer and a zwitterionic monomer were synthesized. In addition, the properties of liquid zwitteion/lithium salt composites were evaluated, and their lithium ion conductivity was investigated. The zwitterion moiety is a high polarity matrix that can dissociate a large amount of lithium salts into ion species. The electrochemical window of liquid zwitterion was about 5 V, which was enough value to be electrolytes for lithium ion batteries. Charge/discharge tests were conducted for the lithium ion batteries that were fabricated with polyether/liquid-zwitterion/lithium-salt composites, and a stable performance was observed.
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