A team from Central South University, China; the US’s Pacific Northwest National Laboratory (PNNL); and the University of Washington have developed a new nanostructured composite vanadium phosphate material for Li-ion battery cathodes for use in high-power batteries.
The team prepared the nanostructured Li3V2(PO4)3/carbon composite by incorporating the precursor solution into a highly mesoporous carbon with an expanded pore structure.
When cycled within a voltage range of 3 to 4.3 V, the composite delivered a reversible capacity of 122 mAh g-1 at a 1C rate and maintained a specific discharge capacity of 83 mAh g-1 at a 32C rate.
These results demonstrate that cathodes made from a nano-structured Li3V2(PO4)3 and mesoporous carbon composite material have great potential for use in high-power Li-ion batteries.—Pan et al.
A paper on their work is in press in the journal Electrochemistry Communications.
Anqiang Pan, Jun Liu, Ji-Guang Zhang, Wu Xu, Guozhong Cao, Zimin Nie, Bruce W. Arey and Shuquan Liang (2010) Nano-Structured Li3V2(PO4)3/Carbon Composite for High-Rate Lithium-Ion Batteries. Electrochemistry Communications doi: 10.1016/j.elecom.2010.09.014