Biased interface between solid ion conductor LiBH4 and lithium metal: A first principles molecular dynamics study

Tamio Ikeshoji, Yasunobu Ando, Minoru Otani, Eiji Tsuchida, Shigeyuki Takagi, Motoaki Matsuo, Shin Ichi Orimo

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We use first-principles molecular dynamics to study the electrochemical solid-solid interface between lithium metal and lithium electrolyte LiBH 4. An external bias is applied by using an effective screening medium. We observe large polarization in the LiBH4, because the lithium cations in LiBH4 are shifted more on one side of the double-well potential of Li+. This results in a large potential drop in the interface region and a large double-layer capacity corresponding to ca. 70 μF/cm2. H-coordination to the Li atoms plays an important role in the charge-transfer reaction and ion transfer.

Original languageEnglish
Article number133903
JournalApplied Physics Letters
Volume103
Issue number13
DOIs
Publication statusPublished - 2013 Sep 23

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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