The electrochemical impedance spectroscopy (EIS) of 50 μm Li||Ni92 cells at different state of charges (SOCs) shows that the cell with the GMFN shows a decreasing trend of impedance from the 1 st to 10 th cycle (Supplementary Fig. 35 ).
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A scalable and long-cycle-life 600 Wh kg<sup>-1</sup> solid-state lithium metal pouch cell.
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