Another Role of LiI/<i>tert</i>-Butylpyridine in Room-Temperature Molten Salt Electrolytes Containing Water for Dye-Sensitized Solar Cell

Mikoshiba, Satoshi; Murai, Shinji; Sumino, Hiroyasu; Hayase, Shuzi

doi:10.1246/cl.2002.1156

Cited by 41 publications

(41 citation statements)

References 5 publications

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“…I À /I 3 À redox potential was measured by using a I À /I 3 À electrode as a reference electrode. Electrolytes consisting of 60 mM of MePrImI, 10 mM of I 2 and a certain amount of water in acetonitrile were employed [4][5][6][7][8][9][10][11][12][13][14][15][16]. The redox potential variation on water addition was measured relatively in the model electrolytes.…”

Section: Flat Band Potential and Redox Potentialmentioning

confidence: 99%

“…Additions of a large amount of iodine in- circuit voltage (V oc ) because of the increase in the dark current. We have focused on a small amount of water as the additive to ionic type electrolytes [7][8][9][10][11][12][13]. In this reports, the effects of water addition on photovoltaic performances for DSCs are discussed in terms of electrolytes and TiO 2 properties.…”

Section: Introductionmentioning

confidence: 99%

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Ionic liquid type dye-sensitized solar cells: increases in photovoltaic performances by adding a small amount of water

Mikoshiba

Murai

Sumino

et al. 2005

Current Applied Physics

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Section: Flat Band Potential and Redox Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ionic liquid type dye-sensitized solar cells: increases in photovoltaic performances by adding a small amount of water

Mikoshiba

Murai

Sumino

et al. 2005

Current Applied Physics

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“…1,2 These ILs are expected to be applied as non-flammable ion conductive materials instead of volatile organic solvents. [3][4][5][6][7][8][9][10][11][12][13][14][15] Solidification of ILs is also important for light weight and small ionics devices. For example, thermally stable ion conductive gels have been prepared by mixing ILs (or IL derivatives) with polyelectrolytes containing fixed anionic sites and free cations such as lithium ions.…”

mentioning

confidence: 99%

Electrochemical and Spectroscopic Analyses of Lithium Ion Conductive Polymers Prepared by the Copolymerization of Ionic Liquid Monomer with Lithium Salt Monomer

Ogihara

Suzuki

Nakamura

et al. 2006

Polym J

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ABSTRACT:Lithium ion conductive polymer electrolytes have been prepared by copolymerization of an imidazolium salt type ionic liquid monomer; 1-(1-acryloyloxyhexyl)-3-ethylimidazolium bis(trifluoromethanesulfonyl)imide with polyether-containing salt monomer with low glass transition temperature; methacryloyloxy octa(ethylene oxide)-2-sulfobenzoate lithium salt. The ampholytic copolymers were obtained as flexible and transparent films. Their ionic conductivity and glass transition temperature depended on monomer mixing ratio. Some copolymers containing higher lithium salt monomer fraction than that of ionic liquid monomer had lithium ion transference number exceeding 0.5. Against these, high ionic conductivity was found in the copolymers with high ionic liquid monomer fraction. Copolymerization of monomers containing either ionic liquid unit or lithium salt unit provided ion conductive polymers with a wide variety of conductive characteristics. [DOI 10.1295/polymj.38.117] KEY WORDS Ionic Liquid / Polymer Electrolyte / Lithium Ion Transference Number / Raman Spectroscopy / Ionic liquids (ILs) are usually realized as highly ion conductive, non-volatile and non-flammable media. 1,2These ILs are expected to be applied as non-flammable ion conductive materials instead of volatile organic solvents.3-15 Solidification of ILs is also important for light weight and small ionics devices. For example, thermally stable ion conductive gels have been prepared by mixing ILs (or IL derivatives) with polyelectrolytes containing fixed anionic sites and free cations such as lithium ions. 7,16 The gel based ILs often had a high ionic conductivity depending on the ILs content. The gel type polymers composed of poly-(methacryloyloxy octa(ethylene oxide)-2-sulfobenzoate lithium salt) and 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([EMIm][TFSI]) had a lithium ion transference number (t Li+ ) below 0.1 in our preliminary experiments. This is comprehended as the competitive migration of lithium cation, TFSI anion, and component ions. Thus our goal is to increase the ion transference number of polymers without serious drop of the ionic conductivity.To make polyelectrolytes with high lithium ion conductivity, we must suppress the migration of component ions of ILs so that only the lithium cation in the IL matrix is transported. One method to realize this is the use of a zwitterion that is composed of an onium cation and an anion tethered with molecular spacer. [17][18][19] Another is the use of polymerized ILs, in which the IL component ions are fixed on the polymer chains. [20][21][22] The advantages of polymerized ILs are the structural diversity of the polymers and the tunability of conduction characteristics as well as mobile ion species by changing polymer structure. 22Therefore, lithium ion conductive polymers should be synthesized by copolymerization of two monomers with one having an IL structure and the other having a lithium salt structure. EXPERIMENTAL MaterialsThe sources of the chemicals were as follows. N...

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“…Nanomaterials, such as graphene, metal oxide nanoparticles and nanocomposite materials, are playing an increasing role in the sensitive and selective analysis of pharmaceuticals [2][3][4][5]. The fabrication of chemically modified electrode (CME) has been widely reported to improve sensitivity and selectivity in determining many amino acids, vitamins, drugs, DNA, antiviral drugs and many more in recent years [6][7][8][9][10][11][12][13][14]. Literature review reveals that various analytical methods such as HPLC [15], RP-HPLC [16], spectrophotometry [17], micellar electrokinetic chromatography [18] and LC-MS/MS [19] have been developed for the selective detection of VCV in human serum plasma and pharmaceutical formulations.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic quantification of antiviral drug valacyclovir

Jain

Pandey

2015

Ionics

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GRP-Bi 2 O 3 /GCE (graphene/bismuth oxide/glassy carbon electrode) nanocomposite is proposed as a sensor for the rapid, sensitive and highly selective voltammetric determination of valacyclovir (VCV) by cyclic voltammetry (CV) and square wave voltammetry (SWV). The scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray diffraction (XRD) techniques were applied to characterize the structure and properties of the nanocomposites. The anodic current of VCV is enhanced by about 2 times using a GRPBi 2 O 3 /GCE sensor. The GRP-Bi 2 O 3 /GCE shows an excellent electrocatalytic activity towards the oxidation of VCV in Britton-Robinson buffer at pH 10.5. The resulting GRPBi 2 O 3 /GCE sensor offers an excellent detection for VCV at 0.926 V with a linear response range of 100-700 ng/mL and correlation coefficient of 0.9994. The simple and fast fabrication of the sensor makes it superior to other techniques, which have been applied to detect VCV.

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Another Role of LiI/tert-Butylpyridine in Room-Temperature Molten Salt Electrolytes Containing Water for Dye-Sensitized Solar Cell

Cited by 41 publications

References 5 publications

Ionic liquid type dye-sensitized solar cells: increases in photovoltaic performances by adding a small amount of water

Ionic liquid type dye-sensitized solar cells: increases in photovoltaic performances by adding a small amount of water

Electrochemical and Spectroscopic Analyses of Lithium Ion Conductive Polymers Prepared by the Copolymerization of Ionic Liquid Monomer with Lithium Salt Monomer

Electrocatalytic quantification of antiviral drug valacyclovir

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