Local structure of thermally stable super ionic conducting AgI confined in mesopores

Hirotoshi Yamada; Isamu Saruwatari; Naoaki Kuwata; Junichi Kawamura

doi:10.1021/jp507883z

Local structure of thermally stable super ionic conducting AgI confined in mesopores

Hirotoshi Yamada, Isamu Saruwatari, Naoaki Kuwata, Junichi Kawamura

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7 Citations (Scopus)

Abstract

AgI confined in mesopores of Al₂O₃ exhibits high ionic conductivity for a very wide temperature range. The mechanism of this attractive feature was revealed by detailed investigation of local structure using ¹⁰⁹Ag nuclear magnetic resonance (NMR) spectroscopy and X-ray absorption spectroscopy (XAS). All data of NMR and XAS data as well as X-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and a.c. impedance spectroscopy were carefully analyzed to reach the most plausible model. It was revealed that the local structure of the super ionic conducting phase of AgI in mesopores is amorphous, which is similar to α-AgI structure, and was stabilized for a very wide temperature range from 30 K to melting point around 850 K.

Original language	English
Pages (from-to)	23845-23852
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	41
DOIs	https://doi.org/10.1021/jp507883z
Publication status	Published - 2014 Oct 16

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "AgI confined in mesopores of Al2O3 exhibits high ionic conductivity for a very wide temperature range. The mechanism of this attractive feature was revealed by detailed investigation of local structure using 109Ag nuclear magnetic resonance (NMR) spectroscopy and X-ray absorption spectroscopy (XAS). All data of NMR and XAS data as well as X-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and a.c. impedance spectroscopy were carefully analyzed to reach the most plausible model. It was revealed that the local structure of the super ionic conducting phase of AgI in mesopores is amorphous, which is similar to α-AgI structure, and was stabilized for a very wide temperature range from 30 K to melting point around 850 K.",

author = "Hirotoshi Yamada and Isamu Saruwatari and Naoaki Kuwata and Junichi Kawamura",

year = "2014",

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doi = "10.1021/jp507883z",

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journal = "Journal of Physical Chemistry C",

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AU - Yamada, Hirotoshi

AU - Saruwatari, Isamu

AU - Kuwata, Naoaki

AU - Kawamura, Junichi

PY - 2014/10/16

Y1 - 2014/10/16

N2 - AgI confined in mesopores of Al2O3 exhibits high ionic conductivity for a very wide temperature range. The mechanism of this attractive feature was revealed by detailed investigation of local structure using 109Ag nuclear magnetic resonance (NMR) spectroscopy and X-ray absorption spectroscopy (XAS). All data of NMR and XAS data as well as X-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and a.c. impedance spectroscopy were carefully analyzed to reach the most plausible model. It was revealed that the local structure of the super ionic conducting phase of AgI in mesopores is amorphous, which is similar to α-AgI structure, and was stabilized for a very wide temperature range from 30 K to melting point around 850 K.

AB - AgI confined in mesopores of Al2O3 exhibits high ionic conductivity for a very wide temperature range. The mechanism of this attractive feature was revealed by detailed investigation of local structure using 109Ag nuclear magnetic resonance (NMR) spectroscopy and X-ray absorption spectroscopy (XAS). All data of NMR and XAS data as well as X-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and a.c. impedance spectroscopy were carefully analyzed to reach the most plausible model. It was revealed that the local structure of the super ionic conducting phase of AgI in mesopores is amorphous, which is similar to α-AgI structure, and was stabilized for a very wide temperature range from 30 K to melting point around 850 K.

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Local structure of thermally stable super ionic conducting AgI confined in mesopores

Abstract

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