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Influence of Yttriu...
Influence of Yttrium Concentration on Local Structure in BaZr1-xYxO3-delta Based Proton Conductors
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- Mburu, C. W. (författare)
- University of Nairobi
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- Gaita, Samuel Mwaniki, 1976 (författare)
- Göteborgs universitet,University of Gothenburg,University of Nairobi
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- Knee, Christopher, 1973 (författare)
- Göteborgs universitet,University of Gothenburg
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- Gatari, Michael J (författare)
- University of Nairobi
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- Karlsson, Maths, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2017-07-25
- 2017
- Engelska.
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Ingår i: Journal of Physical Chemistry C. - : American Chemical Society (ACS). - 1932-7447 .- 1932-7455. ; 121:30, s. 16174-16181
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The evolution of local structure, coordination of protons, and proton conductivity in yttrium-doped barium zirconate, BaZr1-xYxO3-delta (x = 0-0.5), has been investigated using thermal-gravimetric analysis, impedance spectroscopy, and infrared spectroscopy. Low-frequency (50-1000 cm(-1)) infrared absorbance spectra provide evidence of increasing local structural distortions as a function of yttrium concentration as well as subtle differences, mainly linked to the oxygen sublattice, between the dry and hydrated samples. High-frequency (1700-4500 cm(-1)) spectra of the hydrated samples, distinguished by a broad O-H stretch continuum, manifest a varying degree of hydrogen bond interactions between the protons and nearest neighbor oxygens due to the disordered crystal structure with a general weakening in. particular of the strongest hydrogen bonding interactions with increasing dopant levels. It is argued that compositions within the range 0.15
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Improve
- Conductivity
- Doped Barium Zirconate
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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