Designer Chemistry of Ionic Liquids and ion Gels

离子液体和离子凝胶的设计化学

• 批准号: 14350452
• 负责人: WATANABE Masayoshi
• 金额: $ 9.79万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350452/
• 关键词: ionic liquid; ion gel; PGSE-NMR; protin conductor; Grotthuss mechanism; fuel cell; electron transport; dye-sensitized solar cell; 磁場匂配NMR; プロトン伝導; イオンダイナミックス; マイクロ電極

Ion-conducting materials are essential for electrochemical energy-storage and energy-conversion devices, such as batteries, capacitors, fuel cells, and solar cells. Recently, the ion-conducting materials are also utilized in soft actuators that can be applicable to medical use, micro-machine, and nano-technology, Conventionally, electrolyte solutions have been used as the ion-conducting materials. For instance, Sulfuric acid is used for lead-acid car batteries, flammable organic electrolyte solutions are used for lithium-ion batteries that are main power source of cellar phones and lap-top computers. As a result, the most of the electrochemical devices are not solid devises but liquid devices that include volatile liquids. Thus, it has been a subject of many researchers to make the ion-conducting materials non-volatile, non-flammable, and solid.Ionic liquids are room temperature molten salts and of great interest as new electrolyte materials, because of their unique properties such as … More non-volatility, non-flammability, thermal and chemical stability, high ionic conductivity, and wide potential window. We have directed out attention to the combination of the ionic liquids and polymers as new polymer electrolytes and proposed that in situ radical polymerization of common vinyl monomers in these ionic liquids affords compatible combinations of the ionic liquids and the resulting network polymers. Completely compatible combinations are new polymer electrolytes and named "ion gels" that are solid electrolytes with the characteristic properties of the ionic liquids. If task-oriented properties are molecularly designed in the ionic liquids, he scope of the utility of ionic liquids and ion gels may greatly expand. In this project we have aimed at exploring the following fundamental and task-oriented properties.1)Ion dynamics in ionic liquids and ion gels2)Design of anhydrous proton-conducting ionic liquids and their ion gels that are stable at the temperatures higher than 100℃3)Design of mixed-conducting ionic liquids and their ion gels that can conduct both ions and electronsThe ion dynamics has been mainly explored by using PGSE-NMR technique combined with electrochemical impedance technique. From the diffusivity for both of the cations and anion, consisting the ionic liquids, from he NMR, the ionic conductivity can be calculated from Nernst-Einstein equation (λ_<NMR>), while he experimental conductivity (λ_<imp>) can be obtained by the impedance measurements. We newly proposed that the ratio, λ_<NMR>/λ_<imp>, could be a measure of he state-of ions in the ionic liquids. As for the design of he anhydrous proton conducting ionic liquids, we have found for he first time that novel Bronsted acid-base ionic liquids, derived from a simple combination of a wide variety of organic amines with bis(trifluoromethane sulfonyl)imide, are anhydrous proton conductors, following the combination of the vehicle and Grotthuss mechanisms. Electrons are also mobile in the ionic liquids when a redox couple is dissolved in them at a high concentration. We have revealed that charge transport of an I^-/I_3^-redox couple in an ionic liquid nonlinearly increases with increasing the concentration by using microelectrode technique. This anomaly of the charge transport at high concentrations of the redox couple with comparable [I^-] and [I_3^-] can be attributed to the exchange reaction of I^-+I_3^-→I_3^-+I^-. Less

离子传导对电化学能量转换设备D太阳能电池的适度，离子传导材料也适用于可以适用于医疗用途的软驱动器用作离子电导材料。 ES包括挥发性液体。独特的特性，例如……更多的非挥发性，非易受性，热和化学稳定性，高离子电导率和广泛的潜在窗口。提供脚趾的组合和所得的网络聚合物。旨在探索以下基本和以任务为导向的。1离子液体和离子凝胶中的动力学2）无水质子导电的离子液体及其离子凝胶的设计，在高于100°3的温度下稳定），设计混合局部性离子化离子化的电离离子凝胶通过使用PGSE-NMR技术与电化学阻抗技术相结合的PGSE-NMR技术主要探索了导致离子动力学的液体及其离子凝胶。 λ_<nmr>），虽然他可以通过新支撑的比率λ_<imp>获得实验性电导率（λ_<imp>），但可以是对He ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins ins for He nydrous in He to的量。质子导致离子液体发现，tirstel bronsted酸碱液体含量是无水的质子导体，遵循媒介物和肉芽素机构的组合。在高浓度下，在一对浓度的3^ - 雷克斯夫妇在高浓度的氧化还原夫妇中使用的浓度非线性地增加了。 - →i_3^ - +i^ -

项目成果

H.Tokuda: "Synthesis, Characterization, and Ion-conductive Behavior in an Organic Solvent and in an Polyether of a Novel Lithium Salt of a Perfluorinated Polyimide Anion"Macromolecules. 35. 1403-1411 (2002)

H.Tokuda：“全氟聚酰亚胺阴离子的新型锂盐的合成、表征以及在有机溶剂和聚醚中的离子传导行为”大分子。

Md.A, B.H.Susan: "Bronsted Acid-Base Ionic Liquids and Their Use as New Materials for Anhydrous Proton Conductors"Chem.Commun.. 2003. 938-939 (2003)

Md.A、B.H.Susan：“Bronsted 酸碱离子液体及其作为无水质子导体新材料的用途”Chem.Commun.. 2003. 938-939 (2003)

S.Tabata: "Synthesis of A Lewis-Acidic Boric Acid Ester Monomer and Effect of Its Addition to Electrolyte Solutions and Polymer Gel Electrolytes on Their Ion Transport Properties"Electrochim.Acta. (in press). (2003)

S.Tabata：“路易斯酸性硼酸酯单体的合成及其添加到电解质溶液和聚合物凝胶电解质中对其离子传输性能的影响”Electrochim.Acta。

Sei-ichiro Tabata, Takuro Hirakimoto, Masahito Nishiura, Masayoshi Watanabe: "Synthesis of A Lewis-Acidic Boric Acid Ester Monomer and Effect of Its Addition to Electrolyte Solutions and Polymer Gel Electrolytes on Their Ion Transport Properties"Electroch

Sei-ichiro Tabata、Takuro Hirakimoto、Masahito Nishiura、Masayoshi Watanabe：“路易斯酸性硼酸酯单体的合成及其添加到电解质溶液和聚合物凝胶电解质对其离子传输性能的影响”Electroch

R.Kawano: "High Performance Dye-Sensitized Solar Cells using Ionic Liquids as Their Electrolytes"J.Photophys.Photobio.A, Chem.. (in press). (2004)

R.Kawano：“使用离子液体作为电解质的高性能染料敏化太阳能电池”J.Photophys.Photobio.A，Chem..（正在印刷中）。