Journal Article Review cathode materials zinc-ion batteries NASICON structure Zn–air batteries advanced characterization techniques anode‐free sodium‐metal batteries bioinspired design deposition/dissolution mechanism energy density high energy density hybrid electrolytes interface modulation interfacial Na+ behaviors interfacial ion concentration interfacial reactions interfacial reversibility low temperatures multielectron redox reaction organic-inorganic hybrid materials passivation preferred crystal plane sodium-ion batteries sodium‐metal batteries solid-liquid transitions solvation structure stability and irreversibility steric hindrance vanadium-based materials