Proton conductivity in borax, Na2[B4O5(OH)4]-8H2O

Maričić, Siniša; Pravdić, Velimir; Veksli, Zorica

doi:10.1016/0022-3697(62)90248-2

Cited by 12 publications

(6 citation statements)

References 14 publications

(2 reference statements)

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“…Onoda and De Bruyn (12) studied the system Fe2OJH20 and showed that a very fast surface reaction was followed by a slow diffusion of protons into a goethitelike interphase separating the bulk oxide from the solution. Proton conductivity in borax was studied by Maricic et al (13) who observed that protonic conduction ceases below 21~ Schwabe (14) measured the release of tritium from alumina films, grown in tritiated solution, when an anodic bias was applied after transfer of the specimen to a nontracer solution. Krembs (15) published similar work on Ta205.…”

Section: New Work Since 1959mentioning

confidence: 99%

On the Mechanisms of Electrolytic Rectification

Schmidt¹

1968

J. Electrochem. Soc.

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A literature survey of papers dealing with electrolytic rectification and related topics is given for the period 1959–1966. Experiments on current flow in the system normaln‐normaltype Si/SiO2/normalelectrolyte are then presented, which indicate the importance of adsorbed water for the electrical properties of this system. The initial increase in conductivity after exposure of the anodic SiO2 film to water is likely to be of electronic origin. However, protons can be injected at low voltages into the hydrated SiO2 but not into dry SiO2 . The injected protons cause a gradual increase of current with time at constant voltage due to enhanced field emission from traps and/or from the cathode. Hydration of the oxide, and its electrical properties, can be reversed by a bake at 150°C in air. Either alkali ions or protons, or both, incorporated into an anodic oxide film by anodization in an incompletely “dry” organic solvent, have a strong effect on lowering the cathodic breakdown voltage at which the current begins to increase with time at constant voltage.

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Section: New Work Since 1959mentioning

confidence: 99%

On the Mechanisms of Electrolytic Rectification

Schmidt¹

1968

J. Electrochem. Soc.

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“…Each of these chains is neighboured by four channels of Na + ions. There are also hydrogen bonds along the b direction between the anionic part of the structure and the water molecules in the cationic channels, d.c. measurements reveal the absolute value of the conductivity along the b axis as three orders of magnitude larger than for that along the sin/~ and c directions [6]. A minimum temperature (,-~ 21°C) is observed below which proton conduction ceases.…”

Section: Inorganic Materialsmentioning

confidence: 97%

“…conduction measurements on proton conductors are frequently reported in the literature [5,6,8,11,39]. Generally, the conductivity is calculated from the voltage over and the current through the sample.…”

Section: DC Conduction Measurementsmentioning

confidence: 99%

Proton migration in solids

Bruinink

1972

J Appl Electrochem

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“…Mechanisms involving such proton jump/Grotthuss mechanism was proposed for ice by N. Bjerrum a long time ago [234,235] and is consistent with oxygen and deuteron/tritium diffusion coefficients measured in compounds like H 3 OClO 4 [53] and in many other hydrates. [269][270][271][272][273] sublattice is also used, as for Ag + , Na + , etc. superionic conductors.…”

Section: Proton Transfer Mechanismsmentioning

confidence: 99%

Proton conductors and their applications: A tentative historical overview of the early researches

Colomban

2019

Solid State Ionics

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We present here an historical overview of the early researches on proton conductor solids for materials such as fuel cell, battery, electrolyser or H 2 -sensor. Unexpectedly, the early researches and developments (1960s Gemini orbiter US program, 1967 Ford patent and papers on solid electrolyte battery for electric cars) happened to be a few years before the 1972 'The Club of Rome' report, the first oil crisis in 1973 and certainly the ecological concerns related to global warming. A renewal of research activity then took place in relation with the global warming issues after 1995 and search for the decarbonated energy sources and storage. We discuss here the history of proton conductor research in terms of the communities involved (ion exchange materials, superionic conductors, hydrogen-bonded compounds, electrochromic films, polymer membranes, geology) and the first studied materials, with a comparison between the researches leading to commercial applications and the ones remaining under study. Special attention is paid to the methods of analysis well adapted for the understanding of the space-and time-scale dynamics of proton conductors, namely neutron scattering, frequency dependent conductivity/relaxation and modelling. Some unsolved questions are formalised.

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Proton conductivity in borax, Na2[B4O5(OH)4]-8H2O

Cited by 12 publications

References 14 publications

On the Mechanisms of Electrolytic Rectification

On the Mechanisms of Electrolytic Rectification

Proton migration in solids

Proton conductors and their applications: A tentative historical overview of the early researches

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