Novel synthesis of low carbon-coated Li3V2(PO 4)3 cathode material for lithium-ion batteries

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[1] [1,Zhang, Lu-Lu
[2] Duan, Song
[3] Peng, Gang
[4] Liang, Gan
[5] Zou, Feng
[6] Huang, Yun-Hui
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Zhang, L.-L. (luluzhang924@gmail.com) | 1600年 / Elsevier Ltd卷 / 570期
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A novel refluxing-assisted solid-state reaction (RE-SSR) has been developed to prepare Li3V2(PO4)3/C (LVP/C) composite; hydrothermal-assisted solid-state reaction (HT-SSR) method is employed for comparison. The as-obtained composites have been characterized with XRD; Raman spectrum; SEM; and electrochemical measurements. XRD results indicate that the samples are well indexed as monoclinic LVP. Low carbon-coated LVP prepared by RE-SSR (LVP/C(RE)) shows better electronic conductivity and lower charge-transfer resistance. For LVP/C(RE); SEM image shows uniform morphology and small particle size. It delivers a high initial discharge capacity of 162.3 mAh g-1 at 0.1 C and an average capacity of 138.5 mAh g-1 at 0.5 C. Our experiments demonstrate that the low carbon-coated LVP cathode material prepared by RE-SSR exhibits better electrochemical performance than that prepared by HT-SSR. © 2013 Elsevier B.V. All rights reserved;
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