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B18-Core EXAFS	Pilot-scale continuous synthesis of a vanadium-doped LiFePO4/C nanocomposite high-rate cathodes for lithium-ion batteries Ian D. Johnson , Mechthild Lübke , On Ying Wu , Neel M. Makwana , Glen Smales , Husn Islam , Rashmi Y. Dedigama , Robert I. Gruar , Christopher Tighe , David O. Scanlon , Furio Corà , Dan J.l. Brett , Paul Shearing , Jawwad Darr Journal Of Power Sources 302, 410 - 418 DOI: 10.1016/j.jpowsour.2015.10.068 Diamond Proposal Number(s): [12093] Show Abstract ▼ Abstract: A high performance vanadium-doped LiFePO4 (LFP) electrode is synthesized using a continuous hydrothermal method at a production rate of 6 kg per day. The supercritical water reagent rapidly generates core/shell nanoparticles with a thin, continuous carbon coating on the surface of LFP, which aids electron transport dynamics across the particle surface. Vanadium dopant concentration has a profound effect on the performance of LFP, where the composition LiFe0.95V0.05PO4, achieves a specific discharge capacity which is among the highest in the comparable literature (119 mA h g−1 at a discharge rate of 1500 mA g−1). Additionally, a combination of X-ray absorption spectroscopy analysis and hybrid-exchange density functional theory, suggest that vanadium ions replace both phosphorous and iron in the structure, thereby facilitating Li+ diffusion due to Li+ vacancy generation and changes in the crystal structure.	Jan 2016

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