Influence of stoichiometry and the nature of the spinel-block stabilizing element on proton transport behavior in solid electrolytes with the β″-alumina structure

Smoot, S.W.; Whitmore, D. H.; Halperin, W. P.

doi:10.1016/0167-2738(86)90243-2

Solid State Ionics

1986

DOI: 10.1016/0167-2738(86)90243-2

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Influence of stoichiometry and the nature of the spinel-block stabilizing element on proton transport behavior in solid electrolytes with the β″-alumina structure

S.W. Smoot

D. H. Whitmore

W. P. Halperin

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Cited by 3 publications

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Study of Protonic Diffusion in H4.5UO2(IO6)1.3 ·m H2O Using PFG NMR Method

Garbarczyk

1990

phys. stat. sol. (a)

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Pulsed field gradient NMR measurements are made of the proton diffusion coefficient in proton uranyl periodates. The conductivity and the diffusion coefficient are sensitive to relative humidity, and the measurements are made under carefully controlled relative humidity conditions. It is found that the activation energy for diffusion is consistently smaller than that required for conductivity, perhaps due to the necessity in the conduction process of forming carriers, whereas diffusion is sensitive only to carrier mobilities. The activation energy decreases with increasing humidity, perhaps reflecting the extent of completeness of hydrogen bonded networks.

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Study of Protonic Diffusion in H4.5UO2(IO6)1.3 ·m H2O Using PFG NMR Method

Garbarczyk

1990

phys. stat. sol. (a)

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Proton Conductivity: Materials and Applications

1996

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In this review the phenomenon of proton conductivity in materials and the elements of proton conduction mechanismsproton transfer, structural reorganization and diffusional motion of extended moietiesare discussed with special emphasis on proton chemistry. This is characterized by a strong proton localization within the valence electron density of electronegative species (e.g., oxygen, nitrogen) and self-localization effects due to solvent interactions which allows for significant proton diffusivities only when assisted by the dynamics of the proton environment in Grotthuss and vehicle type mechanisms. In systems with high proton density, proton/proton interactions lead to proton ordering below first-order phase transition rather than to coherent proton transfers along extended hydrogen-bond chains as is frequently suggested in textbooks of physical chemistry. There is no indication for significant proton tunneling in fast proton conduction phenomena for which almost barrierless proton transfer is suggested to occur. Models of proton conductivity are applied to specific compounds comprising oxides, phosphates, sulfates, and water-containing systems. The importance of proton conductivity is emphasized for biological systems and in devices such as fuel cells, electrochemical sensors, electrochemical reactors, and electrochromic devices.

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Ion exchange on inorganic sorbents

Yaroslavtsev¹

1997

Russ. Chem. Rev.

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Influence of stoichiometry and the nature of the spinel-block stabilizing element on proton transport behavior in solid electrolytes with the β″-alumina structure

Cited by 3 publications

References 12 publications

Study of Protonic Diffusion in H4.5UO2(IO6)1.3 ·m H2O Using PFG NMR Method

Study of Protonic Diffusion in H4.5UO2(IO6)1.3 ·m H2O Using PFG NMR Method

Proton Conductivity: Materials and Applications

Ion exchange on inorganic sorbents

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