Lithium ion conductivity of complex hydrides incorporating multiple closo‑type complex anions

Naoki Toyama, Sangryun Kim, Hiroyuki Oguchi, Toyoto Sato, Shigeyuki Takagi, Masaru Tazawa, Genki Nogami, Shin ichi Orimo

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We report the lithium ionic conductivities of closo‑type complex hydrides synthesized from various molar ratios of lithium borohydride (LiBH4) and decaborane (B10H14) as starting materials. The prepared closo‑type complex hydrides comprised [B12H12]2−, [B11H11]2−, and [B10H10]2− complex anions. In addition, increasing the LiBH4 content in the starting materials increased the amounts of [B11H11]2− and [B10H10]2−, leading to an improved ion conductivity of the prepared sample. The present study offers useful insights into strategies for controlling the complex anion composition in emerging solid electrolytes of closo-type complex hydrides at the molecular level, and improving their ionic conductivities.

Original languageEnglish
Pages (from-to)84-87
Number of pages4
JournalJournal of Energy Chemistry
Publication statusPublished - 2019 Nov
Externally publishedYes


  • Closo-type complex hydride
  • Lithium ion conductivity
  • Multiple complex anions
  • Solid electrolyte

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Electrochemistry


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