Structural, thermal and transport studies on Ag1 ? x Cuxl (0.05 ? x ? 0.25) solid electrolyte

Seydei, M. K. P.; Suthanthiraraj, S. Austin

doi:10.1007/bf01159832

Cited by 8 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 shows typical dc conductivity versus time curves for samples with different composition, x, at temperature 22 8C by using the dc polarization method. It was found that the conductivity is essentially ionic for samples with concentration up to xb0.50, in close agreement with other reports [8][9][10]. In particular, it has been shown that concentrations in the region x=0.25 and CuAg 3 I 4 [8] behave as pure silver ion conductors with the crystal structure of g-AgI in the low temperature region.…”

Section: Methodssupporting

confidence: 84%

“…5. It has been reported [8] that Ag 3 CuI 4 behaves as a pure silver ion conductor and its crystal structure is that of AgI, favourable for the movement of silver ions. In this contest, the present investigation concerning preparation, thermal and conductivity studies on Ag 0.7 Cu 0.3 I.…”

Section: Introductionmentioning

confidence: 98%

“…The solid solution of silver and copper [I] iodides, Ag 1Àx Cu x I, is either Ag + or Cu + conductor depending on the concentration, x [7][8][9][10]. For xz0.5, the electrolyte is a Cu + conductor, changing to Ag + transport for xb0.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Correlated ion diffusion in γ-AgCuI

et al. 2005

View full text Add to dashboard Cite

Section: Methodssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Correlated ion diffusion in γ-AgCuI

et al. 2005

View full text Add to dashboard Cite

“…This conclusion compliments the fact that ambient temperature AgI phase was observed in the XRD pattern studied earlier. It further confirms the Hard and Soft Acids and Bases (HSAB) principle of ion exchange reactions between Ag + and Pb 2+ resulting in the formation of AgI [16]. The above said comments and conclusions arrived at has been established in all other compositions of the rapidly quenched ternary system as can be seen from the Arrhenius plots in Fig.…”

supporting

confidence: 85%

“…It has been a well-established fact that Ag 2 O plays the role of a network modifier in such disordered system. The formation of PbO as a new phase in the case of samples with x>10 mol% PbI 2 suggests strongly that the Lewis acid-base exchange reactions based on the HSAB principle have most likely taken place within the rapidly quenched system [16]. Moreover, the role of PbO as a network former as well as that of a modifier has already been reported [17].…”

mentioning

confidence: 92%

AC Conductivity, XRD and transport properties of melt quenched PbI2–Ag2O–Cr2O3 system

Suthanthiraraj

Mathew

2007

Ionics

View full text Add to dashboard Cite

Composite materials used for electrode and electrolyte materials have been intensely studied in view of their advantages such as higher conductivity and better operational performance compared to their single-phase counterparts. The present work aims at studying the electrical and structural characteristics of a new composite electrolyte namely, (PbI 2 ) x −(Ag 2 O-Cr 2 O 3 ) 100−x where x=5, 10, 15, 20, and 25 mol%, respectively, prepared by the melt quenching technique. The room temperature X-ray diffraction spectra revealed certain crystalline phases in the samples. AC conductivity analysis for all the prepared samples was carried out over the frequency range 1 MHz-20 Hz and in the temperature window 297-468 K. The room temperature conductivity values were calculated to be in the order of 10 −5 -10 −3 Scm −1 . An Arrhenius dependence of temperature with conductivity was observed, and the activation energies calculated were found to be in the range 0.27-0.31 eV. Furthermore, the total ionic transport number (t i ) values obtained for all these indicated the ionic nature of this system.There has been a considerable interest in studying fast ion conducting solid electrolytes that exhibit high ionic conductivity at temperatures well below their melting points. The demonstration of such electrical properties by these materials make them potential candidates for various electrochemical applications viz., solid-state batteries, sensors, fuel cells, etc.[1]. It is noteworthy to mention here that among these electrolytes, although the class of AgIbased electrolytes offering promising characteristics have been fairly reported in literature [2], the scope for further exploration in this field is still wide open. The important feature that attract researchers toward such an exploration in materials with potential mobile ions as Ag + ion lies in certain inherent features of these electrolytes as their isotopic properties, ease in preparation, high room temperature conductivities, etc. More recently, the trend of replacing Ag + ions with other feasible cations in dopants like CuI, CdI 2 , etc. has been followed to realize new materials exhibiting comparable electrical conductivities and exploiting the favorable character of silver ion to electrical conduction [3,4]. Moreover, this new route adopted in developing such materials has paved the way for the "mixed cation effect" [5] wherein a second cation is involved in the process of conduction actively or by influencing conductivity via structural alterations. In view of this, the present study aims to study the effect due to varying concentrations of a new dopant salt, PbI 2 , on conductivity in the case of the system PbI 2 -Ag 2 O-Cr 2 O 3 . It is crucial to note that the network former/modifier ratio also plays a dynamic role in influencing the overall electrical conductivity. However, a study on one such similar ternary system has observed efficient values of conductivity for network former/modifier ratio of one [6]. Hence the above ratio has been maintained at 1 througho...

show abstract

Interdiffusion in the solid couple AgI-CuI

Bazán

Pettigrosso

1996

JOURNAL OF MATERIALS SCIENCE

View full text Add to dashboard Cite

Structural, thermal and transport studies on Ag1 ? x Cuxl (0.05 ? x ? 0.25) solid electrolyte

Cited by 8 publications

References 6 publications

Correlated ion diffusion in γ-AgCuI

Correlated ion diffusion in γ-AgCuI

AC Conductivity, XRD and transport properties of melt quenched PbI2–Ag2O–Cr2O3 system

Interdiffusion in the solid couple AgI-CuI

Contact Info

Product

Resources

About