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Suspension electrolyte with modified Li+ solvation environment for lithium metal batteries
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Journal Article
Suspension electrolyte with modified Li+ solvation environment for lithium metal batteries
2022
Overview
Designing a stable solid–electrolyte interphase on a Li anode is imperative to developing reliable Li metal batteries. Herein, we report a suspension electrolyte design that modifies the Li
+
solvation environment in liquid electrolytes and creates inorganic-rich solid–electrolyte interphases on Li. Li
2
O nanoparticles suspended in liquid electrolytes were investigated as a proof of concept. Through theoretical and empirical analyses of Li
2
O suspension electrolytes, the roles played by Li
2
O in the liquid electrolyte and solid–electrolyte interphases of the Li anode are elucidated. Also, the suspension electrolyte design is applied in conventional and state-of-the-art high-performance electrolytes to demonstrate its applicability. Based on electrochemical analyses, improved Coulombic efficiency (up to ~99.7%), reduced Li nucleation overpotential, stabilized Li interphases and prolonged cycle life of anode-free cells (~70 cycles at 80% of initial capacity) were achieved with the suspension electrolytes. We expect this design principle and our findings to be expanded into developing electrolytes and solid–electrolyte interphases for Li metal batteries.
Stable solid–electrolyte interphases on Li anodes are crucial for reliable Li metal batteries. A suspension electrolyte design that modifies the Li
+
solvation environment in liquid electrolytes and creates inorganic-rich interphases on Li is now reported.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Springer Nature - Nature Publishing Group
Subject
