Dielectric investigations of superionic Cu6PS5Br single crystal

Džiaugys, A.; Banys, J.; Studenyak, I.P.

doi:10.1016/j.ssi.2011.04.011

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…(1) has been already performed in former works [10,11]. Two maxima in distribution of relaxation times were explained by conductivity in bulk and grain boundary in Cu 6 PS 5 Br [11] or by two stage Grotthus transport proton mechanism in Rb 3 H(SeO 4 ) 2 [10].…”

Section: Resultsmentioning

confidence: 82%

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics

2014

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Results of broadband dielectric/electric investigations of (Na 0.5 Pb 0.5 )(Mn 0.5 Nb 0.5 )O 3 ceramics are presented in wide frequency range 20 Hz-3 GHz. The electric properties of (Na 0.5 Pb 0.5 )(Mn 0.5 Nb 0.5 )O 3 ceramics are mainly governed by high ionic conductivity. One ionic and three polaronic contributions to electrical conductivity were successfully separated by employing impedance formalism.

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Section: Resultsmentioning

confidence: 82%

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics

2014

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“…Cu 6 PS 5 Br was the first of its kind to be studied as a Cu + ion conduc-tor [18]. The ionic conductivity of this material was found to be 1.5 x 10 −5 S cm −1 at room temperature with an activation energy of approximately 0.35 eV [18,19].…”

Section: Mainmentioning

confidence: 99%

Lowering the Barrier: Importance of A-Site Cation Chemistry in Superionic Halide Solid Electrolytes

Seymour,

Barker,

McKinney

et al. 2024

Preprint

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Halide solid electrolytes do not currently display ionic conductivities suitable for high-power all-solid-state batteries. We explore the model system A2ZrCl6 (A = Li, Na, Cu, Ag) to understand the fundamental role that A-site chemistry plays on fast ion transport. Having synthesised Ag2ZrCl6 for the first time we reveal exceptional room temperature ionic conductivities in Cu2ZrCl6 and Ag2ZrCl6 of 1 × 10−2 and 4 × 10−3 S cm−1, respectively. We introduce the concept that there are inherent limits to ionic conductivity in solids, where the energy and number of transition states play pivotal roles. Transport that involves multiple coordination changes along the pathway suffer from an intrinsic minimum activation energy. At certain lattice sizes, the energies of different coordinations can become equivalent, leading to remarkably lower barriers when a pathway involves a single coordination change. Our models provide a deeper understanding into the optimisation and design criteria for halide superionic conductors.

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The importance of A-site cation chemistry in superionic halide solid electrolytes

Barker,

McKinney,

Artal

et al. 2024

Nat Commun

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Halide solid electrolytes do not currently display ionic conductivities suitable for high-power all-solid-state batteries. We explore the model system A2ZrCl6 (A = Li, Na, Cu, Ag) to understand the fundamental role that A-site chemistry plays on fast ion transport. Having synthesised the previously unknown Ag2ZrCl6 we reveal high room temperature ionic conductivities in Cu2ZrCl6 and Ag2ZrCl6 of 1 × 10−2 and 4 × 10−3 S cm−1, respectively. We introduce the concept that there are inherent limits to ionic conductivity in solids, where the energy and number of transition states play pivotal roles. Transport that involves multiple coordination changes along the pathway suffer from an intrinsic minimum activation energy. At certain lattice sizes, the energies of different coordinations can become equivalent, leading to lower barriers when a pathway involves a single coordination change. Our models provide a deeper understanding into the optimisation and design criteria for halide superionic conductors.

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Dielectric investigations of superionic Cu6PS5Br single crystal

Cited by 3 publications

References 12 publications

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics

Lowering the Barrier: Importance of A-Site Cation Chemistry in Superionic Halide Solid Electrolytes

The importance of A-site cation chemistry in superionic halide solid electrolytes

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Dielectric investigations of superionic Cu6PS5Br single crystal

Cited by 3 publications

References 12 publications

Impedance Spectroscopy of (Pb0.5Na0.5)(Mn0.5Nb0.5)O3Ceramics

Impedance Spectroscopy of (Pb0.5Na0.5)(Mn0.5Nb0.5)O3Ceramics

Lowering the Barrier: Importance of A-Site Cation Chemistry in Superionic Halide Solid Electrolytes

The importance of A-site cation chemistry in superionic halide solid electrolytes

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Product

Resources

About

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics

Impedance Spectroscopy of (Pb_0.5Na_0.5)(Mn_0.5Nb_0.5)O₃Ceramics