Ionic Conductivity in Binary Solvent Mixtures. 1. Propylene Carbonate (20 mass %) + Ethylene Carbonate at 25 .degree.C

Srivastava, Ashwini K.; Samant, Rajesh A.

doi:10.1021/je00014a037

Cited by 21 publications

(28 citation statements)

References 12 publications

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“…Furthermore, the mixture of EC and PC has a dielectric constant of 87.2 at 25°C which is higher than PC alone. This offers a special advantage over the low dielectric media where ionic association often creates undesirable complications [17].…”

Section: Impedance Studiesmentioning

confidence: 99%

Impedance and FTIR studies on plasticized PMMA–LiN(CF3SO2)2 nanocomposite polymer electrolytes

Ramesh

Ang

2010

Ionics

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Plasticized polymer electrolytes composed of poly (methyl methacrylate) (PMMA) as the host polymer and lithium bis(trifluoromethanesulfonyl)imide LiN(CF 3 SO 2 ) 2 as a salt were prepared by solution casting technique at different ratios. The ionic conductivity varied slightly and exhibited a maximum value of 3.65×10 −5 S cm −1 at 85% PMMA and 15% LiN(CF 3 SO 2 ) 2 . The complexation effect of salt was investigated using FTIR. It showed some simple overlapping and shift in peaks between PMMA and LiN(CF 3 SO 2 ) 2 salt in the polymer electrolyte. Ethylene carbonate (EC) and propylene carbonate (PC) were added to the PMMA-LiN (CF 3 SO 2 ) 2 polymer electrolyte as plasticizer to enhance the conductivity. The highest conductivities obtained were 1.28×10 −4 S cm −1 and 2.00×10 −4 S cm −1 for EC and PC mixture system, respectively. In addition, to improve the handling of films, 1% to 5% fumed silica was added to the PMMA-LiN(CF 3 SO 2 ) 2 -EC-PC solid polymer electrolyte which showed a maximum value at 6.11×10 −5 S cm −1 for 2% SiO 2 .

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Section: Impedance Studiesmentioning

confidence: 99%

Impedance and FTIR studies on plasticized PMMA–LiN(CF3SO2)2 nanocomposite polymer electrolytes

Ramesh

Ang

2010

Ionics

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“…In comparison, little information was available for symmetric polyvalent (Molinou and Tsierkezos, 2001;Molinou, 2000, 2006) and unsymmetric electrolytes (K 2 SO 4 , Na 2 SO 4 , Cd(NO 3 ) 2 , CdCl 2 , CaCl 2 , Ca(NO 3 ) 2 , CoCl 2 , and Zn(NO 3 ) 2 ) in nonaqueous (e.g., Gibson et al, 2006;Pura, 2007) or mixed solvents (Fujii et al, 2006;Qiao et al, 2008). In mixed nonaqueous solvents, the study of complexation were almost limited to symmetric univalent electrolytes in binary mixtures containing PC and selected dipolar aprotic solvents such as THF (Al-Najar et al, 1992), EC (Srivastava and Samant, 1994), DMSO (Srivastava and Shankar, 1998), AN (Barthel et al, 1999), and so forth. Qiao et al (2008) determined the ion association of LiBF 4 in MEC + DMC and MEC + AN, and Fujii et al (2006) measured the formation constants of cobalt chloride ion pairs (CoCl + , CoCl − 3 , CoCl 2− 4 , CoCl (2−n)+ n , n = 1-4) in DMF + NMF.…”

Section: Downloaded By [Northeastern University] At 07:36 27 Novembermentioning

confidence: 99%

“…Dioxane [Kay and Broadwater, 1971] Iodide et al, 1993]. PC + EC (20%; 25 • C) [Srivastava and Samant, 1994]. PC + p-xylene (80%; 25 • C) [Parvatalu and Srivastava, 2003].…”

Section: -Prohmentioning

confidence: 99%

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Solution Properties of Inorganic Contamination in Mixed Solvents: Theory, Progress, and Limitations

Srour¹,

McDonald

2011

Critical Reviews in Environmental Science and Technology

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Most of what is known about the environmental fate and transport of contaminants comes from studies of dilute, aqueous solutions. Theoretical and practical aspects of hydrophobic organic contaminants in aqueous mixtures of organic solvents are well developed, but relatively little attention has been paid to those situations where inorganic contaminants such as metals, water, and organic solvents occur simultaneously. The authors discuss changes in solution properties accompanying the addition of organic solvents. They review more than 500 references to available data on ion solvation, solubility, activity, acidity, pairing, and pH in electrolyte and electrolyte-free solvent mixtures and tabulate selected experimental values. Whenever available, equations developed to estimate these properties are given and their applications and limitations described. The implications of the progress in mixed-solvents solution chemistry on contaminant behavior and transport are described. Major limitations to the study of inorganic contamination in mixed solvents include the absence of complete and comprehensive data (e.g., type of ionic species, activity coefficients, solubility constants) that characterize solute and solvent properties in these mixtures and the indefinite number of possible solute and solvent combinations. The generation of models predicting such data from easily measured benchmark solute and solvent properties is a major challenge. The availability of such database and models may open the field for environmental engineers and soil scientists to study the basic chemical processes and mechanisms of metal contamination in complex multicomponent systems.

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“…Studies on ionic conductivity of certain ions in propylene carbonate + ethylene carbonate (Srivastava and Samant, 1994) and ethylene carbonate + water mixtures (Srivastava et al, 1996) have been reported in our previous work.…”

Section: Introductionmentioning

confidence: 99%

Ionic Conductivity in Binary Solvent Mixtures. 3. Dimethyl Sulfoxide + Propylene Carbonate at 25 °C

Srivastava

Shankar

1998

J. Chem. Eng. Data

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Electrolytic conductance measurements for potassium alkyl xanthates (alkyl: methyl, ethyl, 2-propyl, butyl, and 3-methyl-1-butyl) are reported at x A ) 0.20, 0.40, 0.60, 0.80 dimethyl sulfoxide (A) + propylene carbonate (B) mixtures at 25°C. The results are analyzed by the Fuoss conductance-concentration equation. Values of limiting molar conductance Λ 0 , association constant K A , and cosphere diameter R are obtained, and an attempt is made to relate these parameters to the increasing size of the attached alkyl substituents in the xanthate anion.

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Ionic Conductivity in Binary Solvent Mixtures. 1. Propylene Carbonate (20 mass %) + Ethylene Carbonate at 25 .degree.C

Cited by 21 publications

References 12 publications

Impedance and FTIR studies on plasticized PMMA–LiN(CF3SO2)2 nanocomposite polymer electrolytes

Impedance and FTIR studies on plasticized PMMA–LiN(CF3SO2)2 nanocomposite polymer electrolytes

Solution Properties of Inorganic Contamination in Mixed Solvents: Theory, Progress, and Limitations

Ionic Conductivity in Binary Solvent Mixtures. 3. Dimethyl Sulfoxide + Propylene Carbonate at 25 °C

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