成果報告書詳細
管理番号20150000000365
タイトル*平成24年度中間年報 「新エネルギーベンチャー技術革新事業 新エネルギーベンチャー技術革新事業(燃料電池・蓄電池) ポリマーモノリスの構造制御による高信頼性リチウムイオン電解質膜の開発」
公開日2015/7/17
報告書年度2012 - 2012
委託先名株式会社エマオス京都 国立大学法人京都大学 独立行政法人国立高等専門学校機構鶴岡工業高等専門学校
プロジェクト番号P10020
部署名イノベーション推進部
和文要約
英文要約Title: New Energy Venture Business Technology Innovation Program /New Energy Venture Business Technology Innovation Program(fuel cells and batteries)/Development of the electrolyte film for high reliability lithium-ion battery by the structural control of polymer monolith (FY2012-FY2013) FY2012 Annual Report

A porous polymer monolithic film can be prepared by phase separation with the cross-linking reaction using epoxy and amine compounds in presence of porogen. As the electrical and thermal stability could be improved by optimization of species of starting materials and resultant pore size which can be controlled with the range from sub-micron to micron to show relatively sharp pore size distribution, high efficiency for ion conductivity and restraint of metal dendrite (subject for phase B) are expected. Also a large and thin monolithic film (100mm x 100mm) without skin layer could be successfully obtained by use of glass substrates coated with hydrophilic sacrificial layers which have affinity for porogen. The evaluations of ion conductivity (electrical conductivity), ionic mobility (diffusion constant) and mechanical strength were performed with a monolithic film impregnated with electrolyte. The monolithic film indicated high ion conductivity (~1mS/cm), ionic mobility (diffusion constant, ~10-11m2/s) and high mechanical strength (flexibility, break elongation up to 115%), which indicates achievement of the targets. The relatively high heat-resistant shrinkage temperature over 150 C could be found compared to conventional film as a separator. The result of charge‐discharge behavior obtained with coin cell using monolithic film and organic electrolyte solution showed almost the same characteristics as conventional film, although the thickness of monolithic film is double conventional one. The reduction of the thickness of monolithic film might bring out the high efficiency in battery. As novel ionics-materials, fabrication of composite film of ionic liquid and polymer monolith was succeeded, showing their high conductivities. In addition, the monolith was successfully applied to non-volatile, safe dye-sensitized solar cell, resulted in high efficiency due to the homogeneity of porous structures in monolith and the effect of continuous nano channels for ionic conductivity.
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