Coordination polymer-derived Al3+-doped V2O3/C with rich oxygen vacancies for an advanced aqueous zinc-ion battery with ultrahigh rate capability

Coordination polymer-derived Al 3+ -doped V 2 O 3 /C with rich oxygen vacancies exhibits excellent rate performance and long-term cycling durability in a zinc-ion battery. The doping of Al 3+ can decrease the binding energy and diffusion barrier of Zn 2+ .