Li3V2(PO4)3 membrane electrode supported on a 3D-porous carbon fiber film

Graphical abstract: Schematic illustration of the synthesis process of free-standing LVP@C laminates. -- Abstract: A novel and simple in-situ solid-state reaction route is developed to synthesize a three-dimensional (3D) porous carbon fiber film-supported Li3V2(PO4)3 membrane electrode. The carbon film is obtained via the carbonization of a bioproduct rice paper (RP). The carbon film can function as both a current collector and a 3D electronic conduction network for the loaded Li3V2(PO4)3 particles. The structure and electrochemical properties of the Li3V2(PO4)3 membrane electrode are characterized. As a free-standing membrane electrode, it exhibits good rate performance at room temperature with a specific capacity of 108 and 142 mAh g−1 at 10 C rate in the voltage range of 3.0–4.3 V and 3.0–4.8 V, respectively. It also shows good cycling performance with a specific capacity of 123 mAh g−1 after 500 cycles at 1 C rate in the voltage range of 3.0–4.8 V