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Figure 4. Three-dimensional polymer architectures for Li metal accommodation. (A) Schematic of stacked polymer host structure (Cu@SPF). (B) SEM images of Cu@SPF electrode. (C) Tilted SEM images of 10 mAh cm-2 Li deposited on Cu (top) and Cu@SPF (bottom). (D) Top-view SEM images of cycled Cu-Li (top) and Cu@SPF-Li (bottom) anodes after 50 cycles. Reproduced with permission[77]. (E) Fabrication process of hyperporous/hybrid conductive architecture on CNT film (HCA/C). (F) Cross-sectional and top-view SEM images of HCA/C fabricated using ethanol, 1-propanol, and 1-butanol as nonsolvents (left to right). Insets show magnified regions confirming the structural formation of the three components. (G) Cross-sectional SEM images after Li deposition
