Synthesis and Electrochemical Performance of Li1+xV3O8 as Cathode Material for Lithium Secondary Batteries

Abstract

Abstract: A novel technique was studied to prepare Li_1+xV₃O₈ as cathode material for lithium secondary
batteries. V₂O₅ sol was prepared via a “quencher” method by NH₄VO₃as raw material. Then it was mixed with LiOH solution. The spherical precursor
was obtained by a spray drying method. The Li_1+xV₃O₈ powders were synthesized by sintering the spherical precursor. DTA/TGA were
employed to analyze the precursor. The investigation of XRD, SEM and the determination of the electrochemical properties show the
particles obtained by sintering at 350℃ for 24h are fine, spherical, narrowly distributed and well crystallized. The resultant
material also has excellent electrochemical properties with an initial discharge specific capacity of 378 mAh·g^-1, and the discharge
specific capacity of the 10th cycle is 312mAh·g^-1.

Key words: lithium secondary battery, Li_1+xV₃O₈, quencher, spherical

CLC Number:

TM911

GAO Jian,JIANG Chang-Yin,YING Jie-Rong,WAN Chun-Rong. Synthesis and Electrochemical Performance of Li_1+xV₃O₈ as Cathode Material for Lithium Secondary Batteries[J]. Journal of Inorganic Materials.

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Synthesis and Electrochemical Performance of Li_1+xV₃O₈ as Cathode Material for Lithium Secondary Batteries

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