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.

中文翻译：

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全固态锂电池– Mg ₂ FeH _6-电极LiBH _4-电解质系统

在使用LiBH ₄作为固态电解质的固态全氢化物锂电池中，研究了复合氢化物Mg ₂ FeH ₆作为转化型阳极。与传统的液体电解质电池相比，在固态电池中，Mg ₂ FeH ₆的容量保持率和初始库仑效率分别提高了> 3倍和> 2.5倍。通过研究Mg ₂ FeH ₆的转化反应，形成MgH ₂首次发现了向Mg转化的中间体。另外，讨论了电极-电解质复合物的混合过程对电池性能的影响。