On the use of lithium vanadium phosphate in high power devices

Lithium vanadium phosphate can be conveniently used as cathodic and anodic material, and it displays high performance during charge–discharge tests carried out at high current densities. Using a sol–gel method two different LVP samples, having different carbon content, were synthesized. The lithium diffusion coefficient as well as the rate performance of the electrodes was investigated. The electrodes were used for the realization of three different electrochemical devices: a LIC, a hybrid device containing LVP as cathode and a LVP-based lithium-ion battery. The performance of all devices was investigated in terms of cycling stability, and their energy and power were evaluated. The results of these tests indicate LVP as an interesting and flexible candidate for the realization of high power system.

► Lithium vanadium phosphate is attractive for the realization of high power devices.
► Lithium-ion capacitors containing lithium vanadium phosphate display high energy and power.
► Lithium-ion batteries containing lithium vanadium phosphate as the only active material display promising performance.