Fig. 4: The Li plating/stripping performances of Li | PEO-LiTFSI-AlOC | Li symmetric cells.

The long-term cycling performance of Li|PEO-LiTFSI-AlOC|Li symmetric cells at the current density of 50 μA cm−2 at 35 °Ϲ (a) and 50 °Ϲ (c). The inset figures show the voltage curves of the cycle at 1st, 500th, and 1000th. The cycling performance of Li|PEO-LiTFSI-AlOC|Li symmetric cells under different current densities at 35 °Ϲ (b) and 50 °Ϲ (d).