Enhanced electrical conductivities of complex hydrides Li 2(BH4)(NH2) and Li4(BH 4)(NH2)3by melting

Yu Zhou, Motoaki Matsuo, Yonei Miura, Hitoshi Takamura, Hideki Maekawa, Arndt Remhof, Andreas Borgschulte, Andreas Züttel, Toshiya Otomo, Shin Ichi Orimo

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11 Citations (Scopus)

Abstract

The electrical conductivities of complex hydrides Li2(BH 4)(NH2) and Li4(BH4)(NH 2)3 consisting of (BH4)- and (NH2)- anions are investigated focusing on their low melting temperatures (365 K for Li2(BH4)(NH2) and 490K for Li4(BH4)(NH2)3). The two hydrides show lithium fast-ion conductivities of about 1 × 10 -4 S·cm-1 at room temperature. After melting, the total ion conductivities OfLi2(BH4)(NH2) and Li4 (BH 4)(NH2)3 reach 6 × 10-2 S·cm-1 (378 K) and 2 x 10-1 S·cm -1 (513 K), respectively. The crystal structure and local atomistic structures closely correlated with the lithium ion conduction before and after melting are also discussed.

Original languageEnglish
Pages (from-to)654-657
Number of pages4
JournalMaterials Transactions
Volume52
Issue number4
DOIs
Publication statusPublished - 2011 Apr

Keywords

  • Complex hydride
  • Lithium ion conduction
  • Melting

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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