High-energy lithium-ion battery using substituted LiCoPO4: From coin type to 1 Ah cell

D. Liu, W. Zhu, C. Kim, M. Cho, A. Guerfi, S.A. Delp, J.L. Allen, T.R. Jow, K. Zaghib

Index: 10.1016/j.jpowsour.2018.03.077

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Abstract

Cr, Fe and Si were added to improve the performance of olivine LiCoPO4 in cathodes for lithium-ion batteries. A substituted-LiCoPO4 in a half cell delivered a reversible capacity of 125 mAh/g at C/3 rate, with no capacity loss after over 100 cycles at 25 °C. The well-known capacity fade of LiCoPO4-based cathodes was almost completely eliminated by substituting Cr, Fe and Si.