fig2

Figure 2. (A) Schematic illustration of presodiation mechanics by introduction of Na₂C₂O₄ implemented by initial charge process^[60]. (B) Schematic diagram showing multiple functions of DTPA-5Na^[59]. (C) Crystal structure and electrochemical characteristics of NaCrO₂^[61]. (D) Illustration of electrocatalytically-driven presodiation process based on pouch cell^[62].