Mixed-Dimensional (2D/3D/3D) Heterostructured Vanadium Oxide with Rich Oxygen Vacancies for Aqueous Zinc Ion Batteries with High Capacity and Long Cycling Life.

Heterostructure engineering and oxygen vacancy engineering are the most promising modification strategies to reinforce the Zn ion storage of vanadium oxides. Herein, a rare mixed-dimensional material (), composed of VO (2D), VO (3D), and VO (3D) heterostructures, rich in oxygen vacancies, was synthesized via thermal decomposition of layered ammonium vanadate. The cathode provides an exceptional discharge capacity (411 mA h g at 0.