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 journalArticlepeer-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 languageEnglish
Pages (from-to)1392-1395
Number of pages4
JournalJournal of the American Chemical Society
Volume139
Issue number4
DOIs
Publication statusPublished - Feb 1 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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