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Structure of Proton...
Structure of Proton-Conducting Alkali Thio-Hydroxogermanates
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- Karlsson, Maths, 1978 (author)
- Lund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities
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- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Panas, Itai, 1959 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bowron, D.T. (author)
- STFC Rutherford Appleton Laboratory
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- Martin, Steve (author)
- Iowa State University
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- Nelson, C.R. (author)
- Iowa State University
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- Martindale, C.A. (author)
- Iowa State University
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- Hall, Andreas, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Börjesson, Lars, 1957 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2008-09-03
- 2008
- English.
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In: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 20:19, s. 6014-6021
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Abstract
Subject headings
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- Using a combination of neutron diffraction, infrared spectroscopy, and first-principles calculations, we have investigated the structure of hydrated and dehydrated proton conducting alkali thio-hydroxogermanates of general formula M2GeS2(OH)2·yH2O (M = K, Rb, and Cs). The results show that the structure of hydrated and dry materials are basically the same, which confirms previous indications that the main effect of heating these materials is just a loss of water. We suggest that in the hydrated state the structure of these materials is built of dimers of thio-hydroxogermanate anions, with the water molecules acting as bridges between such dimers. In the dehydrated structure, the thio-hydroxogermanate anions instead form an extended network through the formation of interdimer hydrogen bonds through the −OH groups in the structure. The alkali ions are suggested to act as “space-fillers” in voids formed by the thio-hydroxogermanate anion dimers, in both the hydrated and the dehydrated state.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- spectra
- density
- oxide fuel-cells
- temperature
- infrared-spectroscopy
Publication and Content Type
- art (subject category)
- ref (subject category)
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Karlsson, Maths, ...
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Matic, Aleksanda ...
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Panas, Itai, 195 ...
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Bowron, D.T.
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Martin, Steve
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Nelson, C.R.
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show more...
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Martindale, C.A.
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Hall, Andreas, 1 ...
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Börjesson, Lars, ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Theoretical Chem ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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Chemistry of Mat ...
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Chalmers University of Technology
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Lund University