Crystal Structures and Ionic Conductivities of Ternary Derivatives of the Silver and Copper Monohalides

Hull, S.; Keen, D. A.; Sivia, D.S.; Berastegui, P.

doi:10.1006/jssc.2002.9552

Cited by 70 publications

(99 citation statements)

References 23 publications

(21 reference statements)

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“…The (RbI) c (AgI) 1-c mixtures has stoichiometric compound RbAg 4 I 5 which shows the superionic phase even at room temperature [23][24][25][26][27], and its structure factor at molten phase has the largest scale of medium-range order in the molten (RbI) c (AgI) 1-c system [28]. We have two motivations in this study.…”

Section: Introductionmentioning

confidence: 99%

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Tahara

Ohno

Okada

et al. 2011

EPJ Web of Conferences

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Abstract. Ionic conductivities of molten (RbX) c (AgX) 1-c (X = Cl and I) mixtures were measured to clarify the concentration effects of silver ions on ionic conductivities of molten silver halides. It is found that the addition of RbX to molten AgX rapidly reduces the ionic conductivity with 0 ≤ c ≤ 0.4. It suggests that strong Ag-Ag correlation is necessary to fast conduction of Ag ions in molten state. The absolute values of ionic conductivity for (RbCl) c (AgCl) 1-c are larger than those for (RbI) c (AgI) 1-c mixtures at all compositions. These differences might relate to difference of diffusion constant between Cl -and I -and difference of effective charge carried by an ion between molten AgCl and AgI.

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Section: Introductionmentioning

confidence: 99%

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Tahara

Ohno

Okada

et al. 2011

EPJ Web of Conferences

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“…According to the structural study about superionic -RbAg 4 I 5 , it is suggested that there are many chainlike fragments of Ag ions where neighboring Ag ions contact closely with each other. 10,15) …”

Section: The Variation Of the Fsdp In The Total S(q)mentioning

confidence: 99%

“…6) One of them is RbAg 4 I 5 which has the superionic phase at room temperature. [6][7][8][9][10] The other is Rb 2 AgI 3 and does not show the superionic behavior. 6,11) In this paper, we present the results of the HEXRD measurement of molten Ag 2 Se, Ag 2 Se-AgI and RbI-AgI mixtures, and of the reverse Monte Carlo analysis for molten Ag 2 Se.…”

Section: Introductionmentioning

confidence: 99%

Concentration Effects of Silver Ions on Forming Cooperative Conduction Path in Superionic Melts

et al. 2010

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In Ag-based superionic melts, medium-range order in the Ag-Ag partial correlation relating to the fast ionic conducting path of Ag ions was analyzed as a function of Ag concentration. High energy x-ray diffraction measurements for molten Ag 2 Se and (Ag 2 Se) x (AgI) 1-x mixtures and (RbI) y (AgI) 1-y were carried out. In molten (Ag 2 Se) x (AgI) 1-x mixtures, a first sharp diffraction peak (FSDP) is not observed in the total structure factor for x = 0.2 and 0.3. On the other hand, molten (RbI) y (AgI) 1-y mixture have a FSDP at small Q region than that of molten AgI. It may suggest that the correlation length of the fluctuation of Ag distribution varies with Ag concentration. In the reverse Monte Carlo analysis for molten Ag 2 Se, it is confirmed that the FSDP of Ag-Ag partial structure factor shifts to short length side compared with molten AgI.

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“…Short after the 1970's the first coinage metal chalcogen halides emerged but their ion conductivities could not reach the values of the fast super ion conductors like RbAg 4 I 5 [37][38][39]. Unfortunately, the low concentration of potentially mobile charge carrying cations per formula unit lead to a relatively low ion conductivity compared to the chalcogenide halides.…”

Section: Coinage Metal Chalcogen Halides Chalcogenide Halides and Pomentioning

confidence: 99%

Silver(I)-(poly)chalcogenide Halides – Ion and Electron High Potentials

Nilges¹,

Bawohl

Osters

et al. 2010

Zeitschrift Für Physikalische Chemie

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Materials with high dynamics in the solid state are of potential interest in semiconductor science and for a great variety of energy applications. In most of the cases the majority of physical properties of such compounds are directly related to their electronic structure. Optimization of properties is therefore correlated with direct or indirect control of this parameter. Compounds with highly mobile ions like the coinage metal cations and the heavy chalcogenide anions can easily be modified chemically or physically to fine tune their electronic structures. The range of adjustable properties lasts from ion conductivity, magneto resistance, thermoelectricity to a reversible redox-driven switch of semiconductivity. Today, the strong demand on clean energy production, the efficient energy transport and energy storage is a major goal for present and oncoming generations. Stable, mixed-conducting materials will play a major role in this process. The ongoing development of coinage metal chalcogenide halides during the last 50 years reflects the fundamental interest in this field. Many interesting and sometimes unexpected properties have been determined recently which substantiates the great potential of this class of materials. Especially the new class of coinage metal polychalcogenide halides is of potential interest due to their drastic modulations of physical properties driven by a fundamental tuning of its electronic structures. Thermopower and thermal diffusivity, two major properties to tune thermoelectricity can be varied in such a way that drastic changes can be addressed in very small temperature ranges close to room temperature. Herein we report on the recent progress of polychalcogenide and chalcogenide halides with the mobile d 10 ions Ag and Cu putting the main focus on silver compounds.

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Crystal Structures and Ionic Conductivities of Ternary Derivatives of the Silver and Copper Monohalides

Cited by 70 publications

References 23 publications

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Concentration Effects of Silver Ions on Forming Cooperative Conduction Path in Superionic Melts

Silver(I)-(poly)chalcogenide Halides – Ion and Electron High Potentials

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