Optimizing ammonium vanadate crystal structure by facile in situ phase transformation of VO₂/NH₄V₄O₁₀ with special micro–nano feature for advanced aqueous zinc ion batteries

Abstract

NH4+-defected NH4V4O10 with microflower morphology was synthesized via hydrothermal method and in situ phase transition to improve specific capacity (494.0 mA h g−1), Zn2+ diffusion efficiency and structural stability (71.8% for 2000 cycles).