Crystal structure and fluoride-ion conductivity of strontium cerium fluoride epitaxial films prepared by topochemical fluorination

Akira Chikamatsu; Ayuka Nakano; Miku Hagiwara; Dai Kutsuzawa; Erika Fukushi; Hiroyuki Oguchi; Fumihiko Uesugi; Tsukasa Katayama; Yasushi Hirose

doi:10.1039/D5CC00985E

Crystal structure and fluoride-ion conductivity of strontium cerium fluoride epitaxial films prepared by topochemical fluorination†

Akira Chikamatsu,

*^a Ayuka Nakano,

^a Miku Hagiwara,

^a Dai Kutsuzawa,

^b Erika Fukushi,

^c Hiroyuki Oguchi,

^c Fumihiko Uesugi,

^d Tsukasa Katayama

^ef and Yasushi Hirose

Author affiliations

* Corresponding authors

^a Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
E-mail: chikamatsu.akira@ocha.ac.jp

^b Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196, Japan

^c Chemistry and Materials Program, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Japan

^d National Institute for Materials Science, 1–2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

^e Research Institute for Electronic Science, Hokkaido University, N21W10, Kita, Sapporo, Hokkaido 001-0020, Japan

^f JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

^g Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan

Abstract

Topochemical fluorination of perovskite SrCeO₃ epitaxial thin films using polyvinylidene difluoride was performed at different annealing temperatures (T_f) for 1 h. Fluorite Sr_0.5Ce_0.5F_2.5 epitaxial thin films were obtained at T_f > 350 °C, which exhibited fluoride-ion conductivity with an activation energy of 0.61 eV.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

Article information

https://doi.org/10.1039/D5CC00985E

Article type

Communication

Submitted

23 ២ 2025

Accepted

05 ៦ 2025

First published

17 ៧ 2025

This article is Open Access

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Chem. Commun., 2025, Advance Article

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Crystal structure and fluoride-ion conductivity of strontium cerium fluoride epitaxial films prepared by topochemical fluorination

A. Chikamatsu, A. Nakano, M. Hagiwara, D. Kutsuzawa, E. Fukushi, H. Oguchi, F. Uesugi, T. Katayama and Y. Hirose, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC00985E

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Chemical Communications

Crystal structure and fluoride-ion conductivity of strontium cerium fluoride epitaxial films prepared by topochemical fluorination†

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Crystal structure and fluoride-ion conductivity of strontium cerium fluoride epitaxial films prepared by topochemical fluorination

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