Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 87, Issue -, Pages 81-85Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2018.01.001
Keywords
Solid-state batteries; Li-ion battery; Conversion anode; Hydride anode; Hydride electrolyte; Reaction mechanism
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Funding
- European Marie Curie Action under ECOSTORE grant [607040]
- Villum Foundation [VKR023453]
- Danish Council for Independent Research [4184-00143A]
- Villum Fonden [00007377] Funding Source: researchfish
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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.
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