Improved Li-storage performance of Mg2+-doped LiVPO4F@C cathode material synthesized by a fast carbothermal reduction reaction
Source abstract
Abstract
Abstract LiVPO4F is a promising cathode material for lithium-ion batteries due to its advantages in safety, discharge potential and energy density. In this work, we report a fast carbothermal reduction reaction to synthesize the Mg2+-doped LiVPO4F@C cathode materials with superior electrochemical performances. It indicates that Mg substitution of V can increase the pyrolytic temperature by 40°C and improve the Li+ diffusivity by two times at the discharge plateau. In particular, the LiV0.97Mg0.03PO4F@C cathode material exhibits a high discharge capacity of 140.3 mA h/g at 1 C with a high discharge potential of 4.2 V and a prominent capacity retention of 88.2 % after 500 cycles. The fast carbothermal reduction reaction and Mg doping strategies developed in this work may be promising to promote the practical application of LiVPO4F for energy storage.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
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References (27)
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