Pseudorotating hydride complexes with high hydrogen coordination: A class of rotatable polyanions in solid matter

Shigeyuki Takagi, Tamio Ikeshoji, Toyoto Sato, Shin Ichi Orimo

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Solid-state materials containing rotatable polyanions, such as B12 H122-, constitute a peculiar class of ionic conductors due to their unique transport behavior, where rotating polyanions promote phase transitions to disordered phases with several orders of magnitude enhancement in cation conductivities. A major drawback is the high temperature required to activate rotation and thereby low conductivities at room temperature. Here, we elucidate a mechanism to drastically reduce the temperature based on the use of pseudorotation in high-H coordination hydride complexes. We demonstrate this mechanism for an existing complex transition metal hydride Li5MoH11 containing MoH93-, and we present a strong potential of this material to unprecedentedly exhibit a high lithium ion conductivity of 7.9 × 10-2 S cm-1 at room temperature.

本文言語English
論文番号173901
ジャーナルApplied Physics Letters
116
17
DOI
出版ステータスPublished - 2020 4月 27
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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