New Vanadium Phosphate Nanocomposite Li-ion Electrode Material for High-Power Batteries

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.

Resources

• 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

Tags: electrochemistry communications, lithium ion batteries, pacific northwest national laboratory, Phosphate, Rate, Vanadium

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