Proton dynamics in La0.8Ba1.2GaO 3.9·nH2O studied by quasielastic incoherent neutron scattering

Niina Jalarvo; Laura Stingaciu; Delphine Gout; Zhonghe Bi; M. Parans Paranthaman; Michael Ohl

doi:10.1016/j.ssi.2013.07.015

Proton dynamics in La_0.8Ba_1.2GaO _3.9·nH₂O studied by quasielastic incoherent neutron scattering

Niina Jalarvo, Laura Stingaciu, Delphine Gout, Zhonghe Bi, M. Parans Paranthaman, Michael Ohl

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

La_0.8Ba_1.2GaO_3.9·nH₂O presents an interesting system with tetrahedral network of GaO₄, and high oxide ion and proton conductivities. High-resolution quasielastic incoherent neutron scattering experiments were performed to gain better understanding of the proton conduction mechanism in tetrahedral systems. Translational long-range proton diffusion was observed. The activation energy for this process is 0.5 eV. Mean-square-displacement of 0.7 Å² for protons was obtained for the temperature range where the long-range proton diffusion occurs.

Original language	English
Pages (from-to)	12-18
Number of pages	7
Journal	Solid State Ionics
Volume	252
DOIs	https://doi.org/10.1016/j.ssi.2013.07.015
State	Published - 2013

Funding

Neutron research at Spallation Neutron Science was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U. S. Department of Energy. Materials characterization work (MPP and ZB) was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division. NJ thanks Eugene Mamontov for the discussion about the QENS data analysis, and Malcolm Cohran, Tadeusz Kozielewski and Piotr Zolnierczuk for the support during the NSE measurements.

Keywords

High-temperature proton conductor
Quasielastic incoherent neutron scattering
Solid oxide fuel cells
Thermogravimetry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ssi.2013.07.015

Cite this

@article{535adc34e83142f68c4c635f01560bbe,

title = "Proton dynamics in La0.8Ba1.2GaO 3.9·nH2O studied by quasielastic incoherent neutron scattering",

abstract = "La0.8Ba1.2GaO3.9·nH2O presents an interesting system with tetrahedral network of GaO4, and high oxide ion and proton conductivities. High-resolution quasielastic incoherent neutron scattering experiments were performed to gain better understanding of the proton conduction mechanism in tetrahedral systems. Translational long-range proton diffusion was observed. The activation energy for this process is 0.5 eV. Mean-square-displacement of 0.7 {\AA}2 for protons was obtained for the temperature range where the long-range proton diffusion occurs.",

keywords = "High-temperature proton conductor, Quasielastic incoherent neutron scattering, Solid oxide fuel cells, Thermogravimetry",

author = "Niina Jalarvo and Laura Stingaciu and Delphine Gout and Zhonghe Bi and Paranthaman, {M. Parans} and Michael Ohl",

year = "2013",

doi = "10.1016/j.ssi.2013.07.015",

language = "English",

volume = "252",

pages = "12--18",

journal = "Solid State Ionics",

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T1 - Proton dynamics in La0.8Ba1.2GaO 3.9·nH2O studied by quasielastic incoherent neutron scattering

AU - Jalarvo, Niina

AU - Stingaciu, Laura

AU - Gout, Delphine

AU - Bi, Zhonghe

AU - Paranthaman, M. Parans

AU - Ohl, Michael

PY - 2013

Y1 - 2013

N2 - La0.8Ba1.2GaO3.9·nH2O presents an interesting system with tetrahedral network of GaO4, and high oxide ion and proton conductivities. High-resolution quasielastic incoherent neutron scattering experiments were performed to gain better understanding of the proton conduction mechanism in tetrahedral systems. Translational long-range proton diffusion was observed. The activation energy for this process is 0.5 eV. Mean-square-displacement of 0.7 Å2 for protons was obtained for the temperature range where the long-range proton diffusion occurs.

AB - La0.8Ba1.2GaO3.9·nH2O presents an interesting system with tetrahedral network of GaO4, and high oxide ion and proton conductivities. High-resolution quasielastic incoherent neutron scattering experiments were performed to gain better understanding of the proton conduction mechanism in tetrahedral systems. Translational long-range proton diffusion was observed. The activation energy for this process is 0.5 eV. Mean-square-displacement of 0.7 Å2 for protons was obtained for the temperature range where the long-range proton diffusion occurs.

KW - High-temperature proton conductor

KW - Quasielastic incoherent neutron scattering

KW - Solid oxide fuel cells

KW - Thermogravimetry

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DO - 10.1016/j.ssi.2013.07.015

M3 - Article

AN - SCOPUS:84888302063

SN - 0167-2738

VL - 252

SP - 12

EP - 18

JO - Solid State Ionics

JF - Solid State Ionics

ER -