A high-performance solid-state synthesized LiVOPO4 for lithium-ion batteries

Yong Shi, Hui Zhou, Sylvia Britto, Ieuan D. Seymour, Kamila M. Wiaderek, Fredrick Omenya, Natasha A. Chernova, Karena W. Chapman, Clare P. Grey, M. Stanley Whittingham*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


ε-LiVOPO4, a multi-electron cathode material for Li-ion batteries, suffers from structural disorder upon nanosizing by high-energy ball-milling, which impedes kinetics and promotes undesirable interfacial side reactions. This work presents a feasible way to decrease the disorder in the ball-milled composite of ε-LiVOPO4/C by post-annealing at 450 °C in an Ar atmosphere, with no reduction reaction caused by carbon and no particle growth. The post-annealed material shows recovered voltage plateaus, enhanced kinetics of Li diffusivity, and suppressed interfacial reactions. As a result, a high-performance solid-state synthesized ε-LiVOPO4 can be obtained, delivering a capacity of 270 mAh g−1 at C/5 with less than 4% degradation upon 100 cycles.

Original languageEnglish
Article number106491
Number of pages6
JournalElectrochemistry Communications
Early online date2 Jul 2019
Publication statusPublished - Aug 2019


  • Annealing
  • Cathode
  • Li-ion battery
  • Structural disorder


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