Synthesis, structure and ionic conductivity in nanopolycrystalline BaF2/CaF2 heterolayersElectronic supplementary information (ESI) available: potential parameters and pertinent calculated physical properties for the perfect BaF2 and CaF2. See http://www.rsc.org/suppdata/cc/b3/b305393h/

2003 ◽  
pp. 1804 ◽  
Author(s):  
Dean C. Sayle ◽  
James A. Doig ◽  
Stephen C. Parker ◽  
Graeme W. Watson
Keyword(s):  
Ionic Conductivity ◽  
Physical Properties ◽  
Supplementary Information ◽  
Potential Parameters

Physical Properties of Fluoride Glasses for Ionics

2005 ◽  
Vol 480-481 ◽  
pp. 299-304 ◽  
Author(s):  
Viera Trnovcová ◽  
R.M. Zakalyukin ◽  
N.I. Sorokin ◽  
D. Ležal ◽  
P.P. Fedorov ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Crystallization Temperature ◽  
Glass Composition ◽  
Point Of View ◽  
Fluoride Glasses ◽  
Glass Compositions

The ionic conductivity and permittivity of glasses based on ZrF4, BaF2, LaF3, AlF3 and NaF (ZBLAN) or PbF2, InF3, BaF2, AlF3 and LaF3 (PIBAL) are studied. The influence of the glass composition on the glass transition temperature (Tg) and on the crystallization temperature (Tx) is reported. For all ZBLAN glasses the temperature dependencies of the ionic conductivity are close one to another (s500 = 8(2)·10-6 S/cm) and their conduction activation enthalpies are equal to 0.82(1)eV. From the point of view of the ionic conductivity, the best glass compositions are the PIBAL50 (50 m/o PbF2) and PIB45 ( 45 m/o PbF2).

Preparation and Synthesis of Functional Silica-Nafion Composite Materials

2012 ◽  
Vol 496 ◽  
pp. 310-313 ◽  
Author(s):  
Yu Yuan Zhi ◽  
Kai Gu ◽  
Hui Qin Lian ◽  
Xiu Guo Cui
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Linear Expansion ◽  
Composite Membranes ◽  
Exchange Capacity ◽  
Ion Exchange Capacity ◽  
Functionalized Mesoporous Silica ◽  
Scanning Electron

In this study, a series of sulfonic-functionalized mesoporous silica (SMS) were synthesized and SMS-Nafion composites membranes were fabricated. The morphology of SMS was characterized by scanning electron microscopy and BET. The physical properties of SMS and composites membranes were tested in terms of ion-exchange capacity, linear expansion, and ionic conductivity. The results showed that the morphology of SMS influenced their physical properties as well as the properties of SMS-Nafion composite membranes.

Effects of physical properties of (Ba,Pb)TiO3 particles on the ionic conductivity enhancement in NASICON based composite solid electrolytes

1996 ◽  
Vol 86-88 ◽  
pp. 565-568 ◽  
Author(s):  
Tomonari Takeuchi ◽  
Kazuaki Ado ◽  
Yuria Saito ◽  
Mitsuharu Tabuchi ◽  
Hironobu Okuyama ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Physical Properties ◽  
Solid Electrolytes ◽  
Conductivity Enhancement ◽  
Composite Solid Electrolytes ◽  
Composite Solid

Physical Properties of Substituted Imidazolium Based Ionic Liquids Gel Electrolytes

2002 ◽  
Vol 57 (11) ◽  
pp. 839-846 ◽  
Author(s):  
Thomas E. Sutto ◽  
Hugh C. De Long ◽  
Paul C. Trulove
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Molten Salt ◽  
Polyacrylic Acid ◽  
Molten Salts ◽  
Polymer Gel ◽  
Composite Gels ◽  
Gel Electrolytes

The physical properties of solid gel electrolytes of either polyvinylidene diflurohexafluoropropylene or a combination of polyvinylidene hexafluoropropylene and polyacrylic acid, and the molten salts 1-ethyl-3-methylimidazolium tetrafluoroborate, 1,2-dimethyl-3-n-propylimidazolium tetrafluoroborate, and the new molten salts 1,2-dimethyl-3-n-butylimidazolium tetrafluoroborate, and 1,2-dimethyl-3-n-butylimidazolium hexafluorophosphate were characterized by temperature dependent ionic conductivity measurements for both the pure molten salt and of the molten salt with 0.5 M Li+ present. Ionic conductivity data indicate that for each of the molten salts, the highest concentration of molten salt allowable in a single component polymer gel was 85%, while gels composed of 90%molten salt were possible when using both polyvinylidene hexafluorophosphate and polyacrylic acid. For polymer gel composites prepared using lithium containing ionic liquids, the optimum polymer gel composite consisted of 85% of the 0.5 M Li+/ionic liquid, 12.75% polyvinylidene hexafluoropropylene, and 2.25% poly (1-carboxyethylene). The highest ionic conductivity observed was for the gel containing 90%1-ethyl-3-methyl-imidazolium tetrafluoroborate, 9.08 mS/cm. For the lithium containing ionic liquid gels, their ionic conductivity ranged from 1.45 to 0.05 mS/cm, which is comparable to the value of 0.91 mS/cm, observed for polymer composite gels containing 0.5 M LiBF4 in propylene carbonate.

The Residual Volume Approach II: Simple Prediction of Ionic Conductivity of Ionic Liquids

2009 ◽  
Vol 64 (6) ◽  
pp. 756-764 ◽  
Author(s):  
Milen G. Bogdanov ◽  
Boyan Iliev ◽  
Willi Kantlehner
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Linear Correlation ◽  
Residual Volume ◽  
Property Changes ◽  
Fundamental Physical

The Residual Volume Approach (RVA), a recently developed method for the prediction of fundamental physical properties of ionic liquids (ILs) is extended and now allows the estimation of ionic conductivity of unknown ILs, using a simple linear correlation between the ionic conductivity and previously defined substituent parameters - βx. The proposed method is applied to the conductivity correlations of 61 n-alkyl substituted imidazolium, tetraalkylammonium, pyrrolidinium, piperidinium, sulfonium and phosphonium homologous ILs, containing [BF4]−, [Tf2 N]−, [C2 F5PF]−, [CF3BF3]−, [C2H5BF3]−, [F(HF)2.3]−, [Br]−, [I]−, and [formate]− as anions. The influence of the ion type - both anion and cation - on the property changes is discussed. Moreover, it is shown that relatively rigid cations with C2 symmetry decrease the expected conductivity in the same manner as they increase the viscosity of the ILs.

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