Complex hydrides as room-temperature solid electrolytes for rechargeable batteries

P. E. de Jongh, D. Blanchard, M. Matsuo, T. J. Udovic, S. Orimo

研究成果: Article査読

40 被引用数 (Scopus)


A central goal in current battery research is to increase the safety and energy density of Li-ion batteries. Electrolytes nowadays typically consist of lithium salts dissolved in organic solvents. Solid electrolytes could facilitate safer batteries with higher capacities, as they are compatible with Li-metal anodes, prevent Li dendrite formation, and eliminate risks associated with flammable organic solvents. Less than 10 years ago, LiBH4 was proposed as a solid-state electrolyte. It showed a high ionic conductivity, but only at elevated temperatures. Since then a range of other complex metal hydrides has been reported to show similar characteristics. Strategies have been developed to extend the high ionic conductivity of LiBH4 down to room temperature by partial anion substitution or nanoconfinement. The present paper reviews the recent developments in complex metal hydrides as solid electrolytes, discussing in detail LiBH4, strategies towards for fast room-temperature ionic conductors, alternative compounds, and first explorations of implementation of these electrolytes in all-solid-state batteries.

ジャーナルApplied Physics A: Materials Science and Processing
出版ステータスPublished - 2016 3 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)


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