Journal ArticleDOI
Crystals with disordered hydrogen-bond networks and superprotonic conductivity. Review
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In this paper, the structural transitions between the phases with ordered and disordered hydrogen-bond networks are described with the emphasis being made on the structural mechanisms of anomalously high (superprotonic) conductivity associated with delocalization of hydrogen bonds.Abstract:
The class of hydrogen-containing salts in which the phases with dynamically disordered hydrogen-bond nets are formed has been considered. Unlike other hydrogen-bonded crystals, the crystals of this class are characterized by delocalized hydrogen bonds producing considerable influence on their physical and physical-chemical properties. The structural transitions between the phases with ordered and disordered hydrogen-bond networks are described with the emphasis being made on the structural mechanisms of anomalously high (superprotonic) conductivity associated with delocalization of hydrogen bonds. The perspectives of the use of crystals with delocalized hydrogen bonds in fuel cells and other electrochemical devices are discussed.read more
Citations
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Journal ArticleDOI
Proton exchange membranes for fuel cells operated at medium temperatures: Materials and experimental techniques
TL;DR: An overview of the different materials currently thought to be potential proton exchange membrane materials for fuel cells operated at medium temperatures (100-200°C) is given in this article.
Journal ArticleDOI
Characterization of the Dynamics in the Protonic Conductor CsH2PO4 by 17O Solid-State NMR Spectroscopy and First-Principles Calculations: Correlating Phosphate and Protonic Motion
TL;DR: It is concluded that, while phosphate rotations aid proton motion, not all phosphate Rotations result in proton jumps.
Journal ArticleDOI
Low- and intermediate-temperature proton-conducting electrolytes
TL;DR: In this paper, the main achievements and problems in the field of proton-conducting solid electrolytes are considered, and a review examines general aspects of Proton transport in low and intermediate-temperature protonconducting liquid electrolytes, such as hydrated acids, acid salts, bases and anhydrous acid salts.
Journal ArticleDOI
Understanding the Conduction Mechanism of the Protonic Conductor CsH2PO4 by Solid-State NMR Spectroscopy
Gunwoo Kim,Gunwoo Kim,Frédéric Blanc,Frédéric Blanc,Yan-Yan Hu,Yan-Yan Hu,Clare P. Grey,Clare P. Grey +7 more
TL;DR: In this paper, the activation energy of 0.70 ± 0.07 eV is extracted for the long-range translational motion, while that of the librational motion is much lower.
Journal ArticleDOI
Morphological stability of solid-liquid interface during melt crystallization of M1−xRxF2+x solid solutions
TL;DR: In this article, the physicochemical fundamentals of solid solutions with optical quality without a growth-induced cell substructure are considered and the stability of the plane crystallization front to concentration undercooling without account of released crystallization heat is considered.
References
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Book
Introduction to Ligand Field Theory
TL;DR: This chapter introduces the theory of transition metal chemistry and its applications in ligand field theory and discusses the role of uranium in this theory.
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
Introduction to solid-state theory
TL;DR: In this paper, the Schrodinger Equation for Electrons in a Periodic Potential (PE) was used to approximate the Hartree-Fock Approximation for the Electron Gas.