A recent publication by M.V. Reddy and co-workers (NSU, Singapore) has confirmed the outstanding lithium insertion behavior of the lithium vanadium fluorophosphate phase, LiVPO4F.
The abstract for this study may be found here:
Long-term cycling studies on 4V cathode, lithium vanadium fluorophosphate
In particular, the long term cycle life (1260 cycles) and associated low capacity fade behavior indicate the acceptability of the LiVPO4F material for next generation Li-ion batteries. When this electrochemical performance is considered in combination with its outstanding thermal stability (see entry below - ARC measurements on the charged, de-lithiated LiVPO4F material by Jeff Dahn's group) it suggests strongly that this material could replace current cathode technology to enable the commercial production of low cost, high energy density and safe Li -ion batteries for next generation applications (for example, EV and PHEV).
In addition, the rate perforamnce indicates that LiVPO4F may alos be a candidate cathode material for high rate Li applications.
Jerry
