Journal ArticleDOI
Electric conductivity in crystal group Me3H(SeO4)2 (Me: NH+4, Rb+, Cs+)
TLDR
In this paper, the conductivity measurements were made by means of impedence spectroscopy for crystals of the Me 3 H(SeO 4 ) 2 (Me: NH 4, Cs, Rb) group.About:
This article is published in Solid State Ionics.The article was published on 1990-12-01. It has received 137 citations till now. The article focuses on the topics: Conductivity.read more
Citations
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Journal ArticleDOI
Proton Conductivity: Materials and Applications
TL;DR: In this paper, a review of the proton conductivity in materials and the elements of proton conduction mechanisms are discussed with a special emphasis on proton chemistry, including structural reorganization and diffusional motion of extended moieties.
Journal ArticleDOI
Solid acids as fuel cell electrolytes
TL;DR: It is shown that a cell made of a CsHSO4 electrolyte membrane operating at 150–160 °C in a H2/O2 configuration exhibits promising electrochemical performances: open circuit voltages of 1.11 V and current densities of 44 mA cm-2 at short circuit.
Journal ArticleDOI
Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)
TL;DR: In this paper, a review summarizes efforts in developing sulfonated hydrocarbon proton exchange membranes (PEMs) with excellent long-term electrochemical fuel cell performance in medium-temperature and/or low-humidity PEMFC applications.
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Nafion® 115/zirconium phosphate composite membranes for operation of PEMFCs above 100 °C
TL;DR: Composite Nafion/zirconium phosphate membranes were investigated for high temperature operation of proton exchange membrane fuel cells (PEMFCs) in this article, where composite membranes were prepared via impregnation of Nafions with zirconyl chloride and 1 M phosphoric acid at 80°C.
Journal ArticleDOI
Synthesis of ammonia directly from air and water at ambient temperature and pressure
TL;DR: For the first time, artificial ammonia synthesis bypassing N2 separation and H2 production stages is reported, and potentially this can provide an alternative route for the mass production of the basic chemical ammonia under mild conditions.
References
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Journal ArticleDOI
Dielectric and Dilatometric Studies of Phase Transitions in (ND 4 ) 3 D(SeO 4 ) 2 and Isotope Effect
TL;DR: In this article, the Curie-Weiss constant and spontaneous polarization of the deuterated crystal are 3.7×10 3 K and 2.4 µC·cm -2 at -170^° C, respectively.
Journal ArticleDOI
Phase transitions, structure, protonic conductivity and dielectric properties of Cs3H(SeO4)2 and Cs3(H, D)(SeO4)2
TL;DR: In this paper, the symmetry and crystal structure of the phases I, II and III in Cs3H(SeO4)2 were determined by means of X-ray examination, and the positional proton disorder arising in the trigonal phase I was shown to differ in principle from the proton disordering between the two possible sites in the hydrogen bond.
Journal ArticleDOI
The NMR study of ionic motions and conductivity mechanisms in protonic conductors MHSeO4 and M3H(AO4)2
TL;DR: In this article, past proton diffusion determining high conductivity in low temperature and superionic phases of studied crystals is investigated, and diffusion peculiarities in different crystals are revealed and discussed.
Journal ArticleDOI
Specific heat at the superionic phase transition of cs3h(seo4)2
Bozna Hilczer,A. Pawłowski +1 more
TL;DR: In this paper, electric conductivity and specific heat measurements were performed in the superionic phase transition region for Cs3H(SeO4)2 and the activation energy of the conductivity was found to follow the ordering enthalpy of protons.
Journal ArticleDOI
Electric capacitance anomaly near the superionic phase transition in (NH4)4H2(SeO4)3 single crystals
Cz. Pawlaczyk,A. Pawłowski +1 more
TL;DR: In this article, a low frequency anomaly of the electric capacitance occurring in the vicinity of the superionic phase transition temperature Tsi and often interpreted as a dielectric anomaly is discussed.