Showing papers in "Solid State Ionics in 1984"

TL;DR: In this article, the constant-phase admittance element is used as part of a circuit for fitting immitance data on solid electrolytes, and several alternate ways of writing an expression for the constant phase element are discussed and compared, and it is suggested that one particular parameterization seems preferably to the others.

TL;DR: In this paper, the defect structure of these materials and the resulting transport properties (electrical conductivity, diffusion and transference number) are discussed as a function of temperature, oxygen partial pressure and composition.

TL;DR: In this paper, a phase transition of Li 3 PS 4 has been revealed at 190°C both by DTA and by a discontinuity in the Arrhenius plots of conductivity.

TL;DR: In this article, the defect structure of perovskite-type oxide solid solution La 1− x Sr x CrO 3− δ was measured as a function of oxygen partial pressure P O 2 at 1000-1300°C, for compositions of x = 0.1-0.3 by means of a thermogravimetric method.

TL;DR: In this paper, a comparison of single-crystal and polycrystalline self-diffusion data is given, with particular attention given to the accuracy attainable and a comparison with single-and polycrystal data will be given.

TL;DR: Amorphous tungsten trioxide films, investigated by the Raman scattering method, are shown to be composed of a spatial network of tightly bound (WO6)n·mH2O clusters with a large number of terminal oxygen W=O and W-O-W bonds between clusters as mentioned in this paper.

TL;DR: In this paper, Ramaman scattering measurements are reported for different glasses containing silver halides and the mode has been assigned to symmetric vibrations involving both Ag + and X - ions line in αAgI.

TL;DR: The conductance/temperature behavior of poly(ethylene oxide)/LiClO4 electrolyte prepared under anhydrous conditions has been studied in this article, where light crosslinking has been shown to cause a small reduction in the conductivity, probably due to restricted backbone segmental motion.

TL;DR: In this article, Li/Li1+xV3O8 cells have been examined and shown that up to 3 eq Li+ could be accepted both chemically and electrochemically by one mole of active material.

TL;DR: In this paper, the ac conductivities of solid polyelectrolyte complexes of alkali salts with polymers derived from methoxypolyethyleneglycol methacrylates of the general formula CH2 = C(CH3)COO(CH2CH2O) nCH3 (n = 8, 22) were measured as a function of temperature and salt content.

TL;DR: In this article, the interpretation of experiments from which parameters characterising dislocation and grain boundary diffusion can be deduced, from which a diffusion coefficient for the boundary and the effective width of the boundary (or radius of a dislocation) within which the diffusion coefficient is significantly different from the bulk lattice are described.

TL;DR: In this paper, an extensive survey of many glass systems including silicates, borates, etc., was conducted with the aim of selecting suitable electrolytes for use in Na/S cells operating around 350°C.

TL;DR: For Ni-Al alloys (containing 05 to 4 wt% Al), the depths of penetration of internal oxide precipitates on exposure to Ni/NiO packs at 800-1100°C are relatively independent of alloy composition as mentioned in this paper.

TL;DR: In this paper, a conductivity vs temperature relationship is derived which results from simplified geometrical considerations of a polycrystalline solid electrolyte, assuming that oxygen ion diffusion only takes place through the grains or along the grain boundaries.

TL;DR: Theoretical techniques are used to examine the effects of dopant ion radius and dopant concentration on the conductivity of doped fluorite oxides as discussed by the authors, and the results are in line with recent data of Gerhardt-Anderson and Nowick.

TL;DR: In this article, the authors measured the electrical conductivity and Seebeck voltage on 99.9997% Fe 2 O 3 as a function of temperature and oxygen pressure, and on donor-and acceptor-doped samples.

TL;DR: In this paper, point defects and transport properties of binary and ternary oxides containing transition metals are discussed on the basis of experimental data on nonstoichiometry, cation tracer diffusion, point defect diffusion, electrical conductivity and on parabolic scale growth.

TL;DR: In this article, a general study of the electrochemical intercalation of sodium in the cobalt bronze Na x CoO 2− y has shown a strong dependence of the discharge curves on the conditions of preparation (temperature and oxygen pressure) of the starting phase, i.e. on the oxygen content.

TL;DR: In this article, the ionic conductivity of single crystals of tysonite-type solid solutions La 1− x Ba x F 3− x (0⩽ x ⩽0.095) has been studied parallel and perpendicular to the crystallographic c axis in the temperature range 293-1300 K.

TL;DR: Aqueous suspensions of delaminated zirconium phosphate have been recently obtained in this article by a suitable intercalation-deintercalation of alkylamines.

TL;DR: In this paper, the parameters of ionic and electronic disorder in polycrystalline materials are analyzed and the energy level positions for various dopants are given. But it is not known which ionic disorder mechanism is dominant.

TL;DR: In this article, the ternary system CuI-Cu 2 O-P 2 O 5, from which Cu 2+ ion formation has been excluded, is described and compared with that in the corresponding Ag + -based system.

TL;DR: In this paper, the partial thermodynamic functions Δ H Li and Δ S Li for Li x Ti 1.03 S 2 and Li 0.95 CoO 2 were obtained from EMF-temperature measurements (T =-30−20° C ).

TL;DR: In this paper, the problems encountered in designing materials to satisfy the specifications for fast ion conduction are illustrated with specific reference to framework structures exhibiting fast sodiumion conduction, to oxygen ion conductivity in oxide fluorite solid solutions, and to lithium ion conducting glasses.

TL;DR: In this article, 1 H NMR relaxation time measurements are reported for the heteropolyacids H 3 PM 12 O 40. 21 H 2 O (M = W, Mo) over a range of tempereatures.

TL;DR: In this article, the anode and cathode resistances were measured separately and are equal and the complex impedance behavior of the electrode reaction can be interpreted in terms of R-C circuits in the PO2 range of 10−2−1 atm.

TL;DR: In this article, a micro-or personal computer based system for frequency dispersion measurements in solid state ionics is described, which is capable of measuring the complex admittance or impedance in the frequency range from less than 1 mHz to 100 kHz.

TL;DR: BaSnF 4 has an ionic conductivity of 10 -2 (ω cm) -1 at 500 K and an activation energy of 0.34 eV below 400 K and 0.31 eV above 400 K.

TL;DR: In this article, the main body of the paper is concerned with the formation of point defects, their association and migration, the substitution energy of cation impurities, their migration and association with point defects and their influence on free vacancy migration, formation of free electrons and holes, the excitation energies of impurity ions and the enthalpies of oxidation and reduction.

TL;DR: The discharge reaction mechanism of graphite fluoride-lithium batteries utilizing a 1M LiClO 4 -propylene carbonate (PC) system was studied by means of X-ray diffraction, ESCA, NMR and transmission electron microscopy, differential thermal analyses and thermal gravimetry as discussed by the authors.