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

被引：8

作者：

Motohashi, Kota ^{[1
,5
]}

Matsukawa, Yosuke ^{[1
]}

Nakamura, Takashi ^{[2
]}

Kimura, Yuta ^{[2
]}

Kuwata, Naoaki ^{[3
]}

Uchimoto, Yoshiharu ^{[4
]}

Amezawa, Koji ^{[2
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Aoba Ku, 6-6 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, 2-1-1 Katahira Aoba ku, Sendai, Miyagi 9808577, Japan

[3] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[4] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Yoshida Nihonmatsu Cho, Kyoto 6068501, Japan

[5] Osaka Prefecture Univ, Grad Sch Engn, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

关键词：

PHASE-TRANSITION; ELECTRICAL-PROPERTIES; STRUCTURAL FEATURES; SOLID ELECTROLYTES; CRYSTAL-STRUCTURES; DEFECT;

D O I：

10.1038/s41598-022-09835-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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)(2)MgF4 based materials. Dominant fluoride ion conduction with relatively high conductivities of 4.8 x 10(-5) S cm(-1) and 8.4 x 10(-6) S cm(-1) were achieved at 323 K in (NH4)(2)(Mg0.85Li0.15)F-3.85 and NH4(Mg0.9Li0.1)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.

引用

页数：7