In situ catalytic formation of graphene-like graphitic layer decoration on Na 3 V 2−x Ga x (PO 4 ) 3 (0 ≤ x ≤ 0.6) for ultrafast and high energy sodium storage

A series of Na 3 V 2−x Ga x (PO 4 ) 3 ( x = 0, 0.1, 0.2, 0.4 and 0.6) with in situ catalytic formation of graphene-like graphitic layer decoration are synthesized via a solid-state reaction process.