The room-temperature superionic conductivity of silver iodide nanoparticles under pressure

Takayuki Yamamoto; Mitsuhiko Maesato; Naohisa Hirao; Saori I. Kawaguchi; Shogo Kawaguchi; Yasuo Ohishi; Yoshiki Kubota; Hirokazu Kobayashi; Hiroshi Kitagawa

doi:10.1021/jacs.6b11379

The room-temperature superionic conductivity of silver iodide nanoparticles under pressure

Takayuki Yamamoto, Mitsuhiko Maesato, Naohisa Hirao, Saori I. Kawaguchi, Shogo Kawaguchi, Yasuo Ohishi, Yoshiki Kubota, Hirokazu Kobayashi, Hiroshi Kitagawa

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

17 Citations (Scopus)

Abstract

We performed variable-temperature synchrotron powder X-ray diffraction measurements and impedance spectroscopy under pressure for silver iodide (AgI) nanoparticles with a diameter of 11 nm. The superionic conducting α-phase of AgI nanoparticles was successfully stabilized down to at least 20°C by applying a pressure of 0.18 GPa, whereas the transition temperature was 147°C in bulk AgI at ambient pressure. To our knowledge, this is the first example of the α-phase of AgI existing stably at room temperature.

Original language	English
Pages (from-to)	1392-1395
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	4
DOIs	https://doi.org/10.1021/jacs.6b11379
Publication status	Published - Feb 1 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/jacs.6b11379

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title = "The room-temperature superionic conductivity of silver iodide nanoparticles under pressure",

abstract = "We performed variable-temperature synchrotron powder X-ray diffraction measurements and impedance spectroscopy under pressure for silver iodide (AgI) nanoparticles with a diameter of 11 nm. The superionic conducting α-phase of AgI nanoparticles was successfully stabilized down to at least 20°C by applying a pressure of 0.18 GPa, whereas the transition temperature was 147°C in bulk AgI at ambient pressure. To our knowledge, this is the first example of the α-phase of AgI existing stably at room temperature.",

author = "Takayuki Yamamoto and Mitsuhiko Maesato and Naohisa Hirao and Kawaguchi, {Saori I.} and Shogo Kawaguchi and Yasuo Ohishi and Yoshiki Kubota and Hirokazu Kobayashi and Hiroshi Kitagawa",

note = "Funding Information: This work was supported by Core Research for Evolutional Science and Technology (CREST) and ACCEL from the Japan Science and Technology Agency (JST), and Grants-in-Aid for JSPS Fellows (27-1603) from the Japan Society for the Promotion of Science (JSPS). Synchrotron XRD measurements were supported by the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2014B1783, 2015A1835, 2015B1701, and 2016A1661). Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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doi = "10.1021/jacs.6b11379",

language = "English",

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T1 - The room-temperature superionic conductivity of silver iodide nanoparticles under pressure

AU - Yamamoto, Takayuki

AU - Maesato, Mitsuhiko

AU - Hirao, Naohisa

AU - Kawaguchi, Saori I.

AU - Kawaguchi, Shogo

AU - Ohishi, Yasuo

AU - Kubota, Yoshiki

AU - Kobayashi, Hirokazu

AU - Kitagawa, Hiroshi

N1 - Funding Information: This work was supported by Core Research for Evolutional Science and Technology (CREST) and ACCEL from the Japan Science and Technology Agency (JST), and Grants-in-Aid for JSPS Fellows (27-1603) from the Japan Society for the Promotion of Science (JSPS). Synchrotron XRD measurements were supported by the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2014B1783, 2015A1835, 2015B1701, and 2016A1661). Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - We performed variable-temperature synchrotron powder X-ray diffraction measurements and impedance spectroscopy under pressure for silver iodide (AgI) nanoparticles with a diameter of 11 nm. The superionic conducting α-phase of AgI nanoparticles was successfully stabilized down to at least 20°C by applying a pressure of 0.18 GPa, whereas the transition temperature was 147°C in bulk AgI at ambient pressure. To our knowledge, this is the first example of the α-phase of AgI existing stably at room temperature.

AB - We performed variable-temperature synchrotron powder X-ray diffraction measurements and impedance spectroscopy under pressure for silver iodide (AgI) nanoparticles with a diameter of 11 nm. The superionic conducting α-phase of AgI nanoparticles was successfully stabilized down to at least 20°C by applying a pressure of 0.18 GPa, whereas the transition temperature was 147°C in bulk AgI at ambient pressure. To our knowledge, this is the first example of the α-phase of AgI existing stably at room temperature.

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The room-temperature superionic conductivity of silver iodide nanoparticles under pressure

Abstract

All Science Journal Classification (ASJC) codes

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