PEG-assisted hydrothermal synthesis of porous Li3V2(PO4)3 frameworks for lithium-ion batteries

Porous Li3V2(PO4)(3) frameworks have been synthesized via a simple hydrothermal route along with subsequent calcination. Polyethylene glycol (PEG-400) is employed as a soft template to control the morphology of the products. The porous frameworks consist of abundant Li3V2(PO4)(3) nanowires which cross with each other to form a 3D network structure. Benefiting from the intriguing hierarchical structure, the unique Li3V2(PO4)(3) electrodes exhibit excellent rate capability and good cyclability (96% of the initial discharge capacity retained after 500 cycles) in a voltage range of 3.0-4.3 V.