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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.

SUBMITTER: Motohashi K 

PROVIDER: S-EPMC8993874 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Fast fluoride ion conduction of NH<sub>4</sub>(Mg<sub>1-x</sub>Li<sub>x</sub>)F<sub>3-x</sub> and (NH<sub>4</sub>)<sub>2</sub>(Mg<sub>1-x</sub>Li<sub>x</sub>)F<sub>4-x</sub> assisted by molecular cations.

Motohashi Kota K   Matsukawa Yosuke Y   Nakamura Takashi T   Kimura Yuta Y   Kuwata Naoaki N   Uchimoto Yoshiharu Y   Amezawa Koji K  

Scientific reports 20220408 1

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 NH<sub>4</sub>MgF<sub>3</sub> and (NH<sub>4</sub>)<sub>2</sub>MgF<sub>4</sub> based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 × 10<sup>-5</sup> S cm<sup>-1</sup> and 8.4 × 10<sup>-6</sup> S cm<sup>-1</sup> were achieved at 323 K in (NH<sub>4</sub>)<sub>2</sub>(Mg<sub>0.  ...[more]

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