title: Li3V2(PO4)3@C core-shell nanocomposite as a superior cathode material for lithium-ion batteries.
abstract: Li3V2(PO4)3@C core-shell nanoparticles with typical sizes of 20-40 nm were synthesized using a hydrothermal-assisted sol-gel method. Ascorbic acid and PEG-400 were adopted as carbon sources and reductants. The uniform Li3V2(PO4)3@C nanocomposite obtained was composed of a Li3V2(PO4)3 core with high-phase purity and a graphitized carbon shell, which was characterized using XRD, SEM, TEM, and Raman analysis. The nanocomposite exhibited a remarkably high rate capability and long cyclability, delivering a discharge capacity of 138 mA h g(-1) at 5 C within a voltage range of 3-4.8 V and the capacity retention was 86% after 1000 cycles. The superior electrochemical performance of Li3V2(PO4)3@C indicates that it has potential for application as a cathode material in advanced rechargeable lithium-ion batteries.
authors.affiliation: Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, PR China.
authors.forename: Wenchao
authors.initials: W
authors.lastname: Duan
authors.forename: Zhe
authors.initials: Z
authors.lastname: Hu
authors.forename: Kai
authors.initials: K
authors.lastname: Zhang
authors.forename: Fangyi
authors.initials: F
authors.lastname: Cheng
authors.forename: Zhanliang
authors.initials: Z
authors.lastname: Tao
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D011211:Electric Power Supplies; D004566:Electrodes; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry; D017968:Vanadium Compounds / Q000737:chemistry*
chemical_list: D007477:Ions; D010710:Phosphates; D017968:Vanadium Compounds; D011092:Polyethylene Glycols; D002244:Carbon; D008094:Lithium; D001205:Ascorbic Acid