Agi-Ag oxysalt glasses: review of thermodynamic and transport properties

Fraction of boroxol rings in vitreous boron trioxide

“…During recent years, B 2 O 3 has attracted considerable interest as the host glassforming material in various fast-ion-conducting glasses. [1][2][3][4][5][6][7][8] The structure of vitreous B 2 O 3 has been a much debated issue for many years. Although it is generally accepted that the molecular building block of vitreous B 2 O 3 is the planar BO 3 group, the manner in which the BO 3 triangles are connected has long been a matter of controversy.…”

Preparation of silver ion conducting amorphous materials in the system Ag2S–SiS2 by mechanical milling processes

“…According to the Wagner polarization analysis, 16 the total electronic current, I, is given by eqn. (3), where I e and I h are the currents due to electrons and holes, respectively, R is the gas constant, T is the absolute temperature, A is the electrode area, L is the sample thickness, F is the Faraday constant, E is the applied voltage, and s e and s h are the conductivities due to electrons and holes, respectively.…”

“…The electronic conductivities s e at 273 K, determined from eqn. (3), are shown in Table 1, with the ac conductivities at 273 K, s 273 . The electronic conductivities are lower by 2 to 3 orders of magnitude than the total ac conductivities.…”

“…Among these glasses, silver ion conducting glasses containing AgI are the most widely studied as a model of superion conducting glasses because of their high ionic conductivity and good stability to air. [1][2][3] However, such AgI containing glasses are electrochemically decomposed at voltages higher than 680 mV (vs. Ag/Ag 1 ). This low decomposition voltage of the AgI-containing glasses limits their practical applications as solid electrolytes.…”

Ion conductivity and dielectric relaxation behavior in FIC silver based phospho-molybdate glasses

“…The addition of Ag 2 O depolymerizes the phosphate network ð½POO 3=2 0 !½POO 2=2 O À Þ units, and intersubstitution of Ag 2 SO 4 to P 2 O 5 leads to openness in the network structure resulting an increase in molar volume [33], which will facilitate higher mobility of Ag + ions. The increase in ionic conductivity on salt doping is almost entirely due to the fact that the activation energy required for 'cation jump' decreases [28,34]. The expansion of the glass network and the introduction of dopant ions in the voids in the structure forming narrow pathways would lead to two effects that lower the activation energy (E a ) and thus promote ion conductivity.…”