Consequences of Different Pressures and Electrolytes on the Irreversible Expansion of Lithium Metal Half Cells

Abstract Lithium metal is considered as the ‘holy‐grail’ among anode materials for lithium‐ion batteries, but it also has some serious drawbacks such formation of dendritic and dead lithium. In this study, interplay external pressure different carbonate‐ ether‐based electrolytes on (ir)reversible expansion lithium during cycling against titanate iron phosphate studied. carbonate‐based without any additives, shows tremendous irreversible significant capacity reduction at elevated current densities due to mossy The addition fluoroethylene carbonate can reduce reduction, especially when a high applied. When an electrolyte used, dilation suppressed applying increased pressures. Overall, appears improve performance.