Fig. 8.

Electrochemical performance of 10 cm² pouch cells assembled by Li foils with GZCNT interfacial layers. a Digital photos of two 40 × 25 mm² GZCNT-coated Li foils and b the pouch cell assembled by them. c Comparison of the cycling performance of symmetric pouch cells assembled by blank Li foils (red), and Li foils with GZCNT (blue) at a charge/discharge current density of 1 mA cm^–2 (10 mA in total) with a stripping/plating capacity of 1 mAh cm^–2 (10 mAh in total) for 210 cycles. The insets are digital photographs of Li foil (left) and GZCNT-coated Li foils (right) in pouch cells after 100 and 200 cycles, respectively. d Electrochemical impedance spectra of pristine pouch cells assembled by bare Li foils and GZCNT-coated Li foils and after 100 and 200 cycles. Frequency: 0.1 Hz–1 MHz