All-solid-state lithium batteries – The Mg2FeH6-electrode LiBH4-electrolyte system

Priscilla Huen, Dorthe B. Ravnsbæk*

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review


The complex hydride Mg2FeH6 is investigated as conversion type anode in a solid-state all-hydride Li-battery employing LiBH4 as solid-state electrolyte. In the solid-state battery, Mg2FeH6 exhibits improvements in the capacity retention and initial Coulombic efficiency of > 3 and > 2.5 times, respectively, compared to the conventional liquid-electrolyte battery. Through investigations of the conversion reactions of Mg2FeH6, formation of MgH2 as intermediate in the conversion to Mg is discovered the first time. In addition, the effect of mixing procedure for the electrode-electrolyte composite on the battery performance is discussed.

Original languageEnglish
JournalElectrochemistry Communications
Pages (from-to)81-85
Number of pages5
Publication statusPublished - 1 Feb 2018


  • Conversion anode
  • Hydride anode
  • Hydride electrolyte
  • Li-ion battery
  • Reaction mechanism
  • Solid-state batteries


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