Results 241 to 250 of about 107,480 (290)

Proton conduction in zeolites

Materials Research Bulletin, 1982
Abstract Protonic conduction in zeolites is optimized. The approach is based on a vehicle-mechanism for the transport process. The parameters controlling protonic conduction are discussed. Fully hydrated “NH4-zeolite A” has a room temperature conductivity of 2×10 −3 Ω −1 cm −1 .
K.D. Kreuer, W. Weppner, A. Rabenau
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Limits of Proton Conductivity

Angewandte Chemie International Edition, 2012
Parasitic current seems to be the cause for the "highest proton conductivity" of a material reported to date. Kreuer and Wohlfarth verify this hypothesis by measuring the conductivity of the same materials after preparing them in a different way. They further explain the limits of proton conductivity and comment on the problems of determining the ...
Kreuer, K., Wohlfarth, A.
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Proton-conducting hydrogel membranes

Polymer, 1998
Abstract Proton-conducting poly(acryl amide) hydrogels are prospective materials for application in electrochemical devices working at ambient temperatures. In the present paper, the conducting properties of hydrogels doped with H 3 PO 4 or H 2 SO 4 are analysed in connection with such features of the hydrogel membrane as sorption and permeation of
J. Przyłuski, Z. Połtarzewski, W. Wieczorek   +2 more
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Protonic conduction in NH4H2PO4

Journal of Solid State Chemistry, 1974
Abstract The conductivity of ammonium dihydrogen phosphate has been measured as a function of temperature and dopant concentration. A previously disputed break in the log conductivity vs reciprocal temperature plots has been observed. The activation energy is in agreement with previous work on NH 4 H 2 PO 4 .
Charles T. Perrino, Paul Wentrcek
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Bioinspired proton conducting materials

Organic and Hybrid Sensors and Bioelectronics XIV, 2021
The talk describes a bio-inspired approach to design and prepare proton conducting materials based on self-assembling short protein sequences (peptides). The effect of amino-acid side-chain and backbone conformation on proton conductivity of the peptide fibrils will be discussed. We will show that the rational design of peptides can lead to fabrication
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Protonic conduction in Ba2In2O5

Solid State Ionics, 1995
Abstract Protonic conduction in Ba 2 In 2 O 5 was studied by conductivity and EMF measurements as a function of temperature and oxygen activity. Evidence for protonic conduction was found in this material in moist atmospheres, especially at low temperatures.
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Proton conductive composite membranes

International Journal of Nanotechnology, 2007
In this work we investigated the synthesis of composite organic and inorganic membranes for proton conduction. Particles derived from metal alkoxides (M(OR)n) sol-gel processes (Ti, Zr, W with phosphoric acid) were embedded in polymeric matrices of poly-vinyl alcohol, (3-glycidoxypropyl)-trimethoxysilane and ethylene glycol.
Sunarso, J., Chen, C- Y., Tran, T. T. A., Wong, M. S., Diniz Da Costa, J. C.   +4 more
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Protonic conductivity in hydrates

Solid State Ionics, 1988
The protonic conductivity of three acid hydrates, HUO2PO4·4H2O, Ce(HPO4)2·nH2O,V2O5·nH2O has been studied as a function of the partial pressure of water. The evolution of their conductivity is related to experimental water adsorption isotherms and to the theoretical Brunauer adsorption isotherms.
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Proton-conducting gel electrolyte

Solid State Ionics, 2002
Abstract Proton conduction in solid state xerogels and polymeric gels are reported. Xerogels, doped with known proton conductors, were prepared by “sol–gel” method starting either from inorganic precursor sodium metasilicate (termed as hydrogel) or organic precursor tetraethyl orthosilicate (termed as silica or SiO 2 alcogel). The dopants chosen for
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Surfacial Proton Conducting Ceo2 Nanosheets

SSRN Electronic Journal, 2022
Sara Paydar, Bin Zhu, Jing Shi, Nabeela Akbar, Quazi Arif Islam, Sining Yun, Akbar Muhammad, Mohammad Hossein Paydar, Yan Wu   +8 more
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