首页|V2O5 vs. LiFePO4: Who is performing better in the 3.4 V class category? A performance evaluation in ?Rocking-chair? configuration with graphite anode
V2O5 vs. LiFePO4: Who is performing better in the 3.4 V class category? A performance evaluation in ?Rocking-chair? configuration with graphite anode
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NSTL
Elsevier
Vanadium pentoxide (V2O5) brings vast interest in the promising host materials for the intercalation of multivalent ions, owing to its abundance in the earth crust, synthesizing facile methodologies, and offers maximum discharge capacity of >300 mAh g1. However, V2O5 undergoes different phase transformations upon the intake of beyond 1 mol Li. Here, we report a comparative study of two versatile cathode materials, such as V2O5 (limiting 1 mol. Li) and LiFePO4. A solvothermal method is adopted to synthesize both two, and three-dimensional crystalline phases of V2O5 and LiFePO4, respectively. The sphericalshaped V2O5 exhibits the initial discharge capacity of 136 mAh g-1 in the half-cell assembly and renders stable cycle life. Subsequently, V2O5 is paired with the electrochemically lithiated graphite (LiC6) anode in full-cell assembly (V2O5/LiC6) and offers a maximum energy density of 266.7 Wh kg-1 (based on total mass loading). On the other hand, LiFePO4 also exhibits -136 mAh g-1 in the half-cell performance with stable cycle life. The full-cell LiFePO4/C delivers an energy density of 234.8 Wh kg-1. This clearly encourages that V2O5 is a strong contender for the 3.4 V class Li-ion cells and paves the new avenue for further exploration of advanced battery technologies. CO 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
NSTL
Elsevier
