Reactivity of charged LiVPO4F with 1 M LiPF6 EC:DEC electrolyte at high temperature as studied by accelerating rate calorimetry

Lithium vanadium fluorophosphate (LiVPO4F), was synthesized using a two-step reaction scheme based on a carbothermal reduction (CTR) process. Electrochemical tests showed that LiVPO4F displayed a specific reversible capacity of 125 mAh/g in a plateau near 4.2 V and excellent capacity retention. Accelerating rate calorimetry (ARC) tests of the reactions between delithiated LiVPO4F and 1 M LiPF6 EC:DEC electrolyte showed that the thermal stability of LiVPO4F is even better than LiFePO4. (C) 2008 Elsevier B.V. All rights reserved.