The accelerated formation of lithium dendrites has considerably impeded the advancement and practical deployment of all-solid-state lithium metal batteries (ASSLMBs). In this study, a soft carbon (SC)-LiN interface layer was developed with both ionic and electronic conductivity, for which the in situ lithiation reaction not only lithiated SC into LiC with good electronic/ionic conductivity but also successfully transformed the mixed-phase LiN into pure-phase β-LiN with a high ionic conductivity/ion diffusion coefficient and stability to lithium metal. The mixed conductive interface layer facilitates fast Li transport at the interface and induces the homogeneous deposition of lithium metal inside it.
View Article and Find Full Text PDFThe Li superionic conductor LiBS has been theoretically predicted as an ideal solid electrolyte (SE) due to its low Li migration energy barrier and high ionic conductivity. However, the experimentally synthesized LiBS has a 10 times lower ionic conductivity. Herein, we investigate the effect of a series of cation and anion substitutions in LiBS SE on its ionic conductivity, including LiMBS (M = Cu, Zn, Sn, P, W, = 0.
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