Research progress of lithium-ion and sodium-ion batteries. (A) Schematic illustration of a simplified structure of the FALBs. (B) Energy and power densities of the FALBs compared with previous energy storage systems. (C) Energy textile woven with FALBs. (A–C) Reproduced with permission from [17]. Copyright©2016, Royal Society of Chemistry. (D) Schematic diagram of the high-voltage flexible aqueous fiber LIB based on synergistic dual co-solvents hybrid electrolyte. Reproduced with permission from [64]. Copyright©2024, Elsevier. (E) Schematic illustration of the structure of FASBs. (F) Galvanostatic charge-discharge curves of FASBs. (G) Capacity stability of FASBs. (E–G) Reproduced with permission from [65]. Copyright©2017, Elsevier. (H) Schematic and charge-discharge curves of FASBs. Reproduced with permission from [24]. Copyright©2019, The Author(s).