Fast fluoride ion conduction of NH4(Mg1-xLix)F3-x and (NH4)2(Mg1-xLix)F4-x assisted by molecular cations

Kota Motohashi; Yosuke Matsukawa; Takashi Nakamura; Yuta Kimura; Naoaki Kuwata; Yoshiharu Uchimoto; Koji Amezawa

doi:10.1038/s41598-022-09835-0

Fast fluoride ion conduction of NH₄(Mg_1-xLi_x)F_3-x and (NH₄)₂(Mg_1-xLi_x)F_4-x assisted by molecular cations

Kota Motohashi, Yosuke Matsukawa, Takashi Nakamura, Yuta Kimura, Naoaki Kuwata, Yoshiharu Uchimoto, Koji Amezawa

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

Abstract

Aiming development of the fast anion conductors, we proposed a new material design using flexible molecular cation as a host cation, and demonstrated it with fluoride ion conduction in NH₄MgF₃ and (NH₄)₂MgF₄ based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 × 10^–5 S cm⁻¹ and 8.4 × 10^–6 S cm⁻¹ were achieved at 323 K in (NH₄)₂(Mg_0.85Li_0.15)F_3.85 and NH₄(Mg_0.9Li_0.1)F_2.9, respectively. It is implied that the molecular cation in the host lattice can assist the anion conduction. Our findings suggest molecular cation-containing compounds can be attractive material groups for fast anion conductors.

Original language	English
Article number	5955
Journal	Scientific reports
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41598-022-09835-0
Publication status	Published - 2022 Dec
Externally published	Yes

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@article{e1d64d216ad34bff8157d64156206fb9,

title = "Fast fluoride ion conduction of NH4(Mg1-xLix)F3-x and (NH4)2(Mg1-xLix)F4-x assisted by molecular cations",

abstract = "Aiming development of the fast anion conductors, we proposed a new material design using flexible molecular cation as a host cation, and demonstrated it with fluoride ion conduction in NH4MgF3 and (NH4)2MgF4 based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 × 10–5 S cm−1 and 8.4 × 10–6 S cm−1 were achieved at 323 K in (NH4)2(Mg0.85Li0.15)F3.85 and NH4(Mg0.9Li0.1)F2.9, respectively. It is implied that the molecular cation in the host lattice can assist the anion conduction. Our findings suggest molecular cation-containing compounds can be attractive material groups for fast anion conductors.",

author = "Kota Motohashi and Yosuke Matsukawa and Takashi Nakamura and Yuta Kimura and Naoaki Kuwata and Yoshiharu Uchimoto and Koji Amezawa",

note = "Funding Information: This work was partly supported by JST-Mirai Program JPMJMI18E2 and Grant-in-Aid for JSPS Fellow Grant number 20J12230, Japan. Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = dec,

doi = "10.1038/s41598-022-09835-0",

language = "English",

volume = "12",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

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T1 - Fast fluoride ion conduction of NH4(Mg1-xLix)F3-x and (NH4)2(Mg1-xLix)F4-x assisted by molecular cations

AU - Motohashi, Kota

AU - Matsukawa, Yosuke

AU - Nakamura, Takashi

AU - Kimura, Yuta

AU - Kuwata, Naoaki

AU - Uchimoto, Yoshiharu

AU - Amezawa, Koji

PY - 2022/12

Y1 - 2022/12

N2 - Aiming development of the fast anion conductors, we proposed a new material design using flexible molecular cation as a host cation, and demonstrated it with fluoride ion conduction in NH4MgF3 and (NH4)2MgF4 based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 × 10–5 S cm−1 and 8.4 × 10–6 S cm−1 were achieved at 323 K in (NH4)2(Mg0.85Li0.15)F3.85 and NH4(Mg0.9Li0.1)F2.9, respectively. It is implied that the molecular cation in the host lattice can assist the anion conduction. Our findings suggest molecular cation-containing compounds can be attractive material groups for fast anion conductors.

AB - Aiming development of the fast anion conductors, we proposed a new material design using flexible molecular cation as a host cation, and demonstrated it with fluoride ion conduction in NH4MgF3 and (NH4)2MgF4 based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 × 10–5 S cm−1 and 8.4 × 10–6 S cm−1 were achieved at 323 K in (NH4)2(Mg0.85Li0.15)F3.85 and NH4(Mg0.9Li0.1)F2.9, respectively. It is implied that the molecular cation in the host lattice can assist the anion conduction. Our findings suggest molecular cation-containing compounds can be attractive material groups for fast anion conductors.

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Fast fluoride ion conduction of NH₄(Mg_1-xLi_x)F_3-x and (NH₄)₂(Mg_1-xLi_x)F_4-x assisted by molecular cations

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