Article pubs.acs.org/IC
Cite This: Inorg. Chem. 2017, 56, 13949-13954
Formation of Amorphous H3Zr2Si2PO12 by Electrochemical Substitution of Sodium Ions in Na3Zr2Si2PO12 with Protons Satoshi Tsukuda,*,† Keigo Miyake,†,‡ Takuya Yamaguchi,† Masao Kita,§ Tomohiro Ishiyama,∥ Junji Nishii,⊥ Toshiharu Yamashita,# Hiroshi Kawazoe,# and Takahisa Omata†,‡ †
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Yamada-oka, Suita 565-0871, Japan § Department of Mechanical Engineering, National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama 939-8630, Japan ∥ National Institute of Advanced Industrial Science and Technology (AIST), AIST Central 5, Higashi, 1-1-1, Tsukuba 305-8565, Japan ⊥ Research Institute for Electronic Science, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo 001-0021, Japan # Kawazoe Frontier Technologies Corporation, Kuden-cho 931-113, Sakae-Ku, Yokohama 247-0014, Japan
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S Supporting Information *
ABSTRACT: The sodium ions in Na3Zr2Si2PO12 (NASICON) were substituted with protons using an electrochemical alkali−proton substitution (APS) technique at 400 °C under a 5% H2/95% N2 atmosphere. The sodium ions in NASICON were successfully substituted with protons to a depth of
