Fundamental Studies on Ionic Liquids and Ion Gels for Functional Materials

功能材料用离子液体和离子凝胶的基础研究

• 批准号: 16205024
• 负责人: WATANABE Masayoshi
• 金额: $ 32.28万
• 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 (A)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16205024/
• 关键词: ionic liquid; ion gel; task specific ionic liquid; ionicity; proton conduction; fuel cell; electron transport; dye-sensitized solar cell; リチウム電池; プロトン伝導性; 電子輸送性; ダイナミックス; 混合伝導性; 磁場勾配NMR; 拡散係数; Coupling; Decoupling; パルス磁場勾配NMR

This study has aimed at understanding fundamental properties of ionic liquids and ion gels and at making new concept for their functionalization as new materials. Efforts have been focused on(1)Ion dynamics and "ionicity" of ionic liquids and ion gels(2)Development of thermally stable proton-conducting ionic liquids and ion gels under non-humid conditions and their application to fuel cells at > 1000C(3)Electron transporting ionic liquids and ion gels and their application to dye-sensitized solar cellsIon dynamics in common ionic liquids has been systematically explored by means of ionic conductivity measurements and pulsed-gradient spin echo NMR (pgse-NMR) measurements, and "ionicity" of the ionic liquids was proposed based on the both measurements. The ionicity corresponds to the self-dissociation degree of the ionic liquids and was found to closely correlate with Lewis acidity of the cations and Lewis basicity of the anions. It has been revealed by this study that the ionicity is lo … More wer than unity for the ionic liquids, indicating the formation of ionic clusters. Regarding to proton conducting ionic liquids, the existence of Grotthuss-type proton transfer through the hydrogen-bonding network formed in the ionic liquids was clearly demonstrated in this study for the first time, which greatly enhances the proton diffusivity and the proton transference number. Also it was discovered in this study that hydrogen oxidation and oxygen reduction occurs at the interface between the ionic liquids and Pt, which opens up the possible application of the proton conducting ionic liquids as electrolyte of fuel cells under non-humid and medium temperature operation. Thorough the investigation of more than 70 proton-conducting ionic liquids, diethylmethylammonium trifluoromethanesulfonate was found to exhibit excellent properties as fuel cell electrolyte in terms of high proton conductivity, high thermal stability, and facile electrochemical reactions at the interface. Furthermore, polyiodide ions in ionic liquids transport electron through electron self-exchange reactions, quite interestingly which is only observed in ionic liquids and not in molecular liquids. The ionic liquids containing polyiodide ions have been utilized in dye-sensitized solar cells, long-term stability of which is greatly enhanced, compared with solar cells using molecular solvents, without losing the photo-electron conversion efficiency. The ionic liquid electrolytes can be solidified by the addition of nanoparticle with the acceleration of the charge transport rate. Less

这项研究旨在使离子液体和离子凝胶的基本基础，以使其对新材料的兴趣提出新的概念。 2）在非人类条件下开发热稳定的质子传导离子液体和离子凝胶，并在> 1000c（3）电子含量液体和离子凝胶上施加到燃料，并将其应用于染料敏化的太阳能素已经通过测量和脉冲梯度旋转回波NMR（PGSE-NMR）进行系统地探索了离子液体的“基于这两种测量值”。铸造与阴离子的刘易斯和刘易斯基础相关。在这项研究中清楚地证明了通过ID的氢气，首次是设计研究，在离子液体和PT上发生氢氧的氧气，并在pt上开放了质子的质子液体。在Sumid和中等温度下，在下面的基础下，发现了70多个质子导电液体，在高质子电导率，高热量的稳定性和高质子电导率，高热的热稳定性方面，发现了三甲基甲基氨甲磺酸盐作为燃料电池电解质的表现为界面。在离子液体中的聚二极管离子转运电子自我交换反应，而不是分子液体中的液体。与使用分子溶剂的太阳能电池相比，可以通过添加纳米颗粒的加速度来差异。

项目成果

Ionic liquid crystal as a hole transport layer of dye-sensitized solar cells

• DOI: 10.1039/b417610c
• 发表时间: 2005-01-01
• 期刊: CHEMICAL COMMUNICATIONS
• 影响因子: 4.9
• 作者: Yamanaka, N;Kawano, R;Yanagida, S
• 通讯作者: Yanagida, S

Effect of binder polymer structures used in composite cathodes on interfacial charge transfer processes in lithium polymer batteries

• DOI: 10.1016/j.electacta.2003.12.065
• 发表时间: 2004-11
• 期刊: Electrochimica Acta
• 影响因子: 6.6
• 作者: S. Seki;S. Tabata;S. Matsui;M. Watanabe

Magnitude and directionality of interaction in ion pairs of ionic liquids: Relationship with ionic conductivity

• DOI: 10.1021/jp0533628
• 发表时间: 2005-09-01
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY B
• 影响因子: 3.3
• 作者: Tsuzuki, S;Tokuda, H;Watanabe, M
• 通讯作者: Watanabe, M

Physicochemical Properties and Structures of Room Temperature Ionic Liquids 2. Variation of Alkyl Chain Length of the Imidazolium Cation

室温离子液体的理化性质和结构2.咪唑鎓阳离子烷基链长度的变化

• 发表时间: 2005
• 期刊: Journal of Physical Chemistry B 109
• 作者: H.Tokuda;K.Hayamizu;K.Ishii;M.A.B.H.Susan;M.Watanabe
• 通讯作者: M.Watanabe

Upper Critical Solution Behavior of Poly(N-isopropyacrylamide) in an Ionic Liquid and Preparation of Thermo-sensitive Nonvolatile Gels

聚(N-异丙基丙烯酰胺)在离子液体中的上临界溶液行为及热敏非挥发性凝胶的制备

• 发表时间: 2006
• 期刊: Chem. Lett. 35
• 作者: T. Ueki;M. Watanabe
• 通讯作者: M. Watanabe