Li2SiF6 In Situ Embedded in an Amorphous SiO Matrix to Inhibit Volume Expansion during Prelithiation
Kaifa Zhang,
Jianjian Zhong,
Baijun Yan
et al.
Abstract:Direct contact prelithiation is considered an important means of addressing the low Coulombic efficiency of Si-based anodes. However, few studies have been conducted on the inhibition of volume expansion of Si-based materials and the reduction of side reactions during direct contact prelithiation. In this paper, Li 2 SiF 6 crystals are generated in situ in an amorphous SiO matrix by a thermodynamic reaction between SiO and LiPF 6 , which is from the viewpoint of contact state at the interface between lithium s… Show more
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