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Citation: CUI Ping, LIANG Ying, PENG Rong. Preparation and Characterizations of LiV₃O₈/V₂O₅ Composite Material[J]. Chinese Journal of Applied Chemistry, ;2013, 30(11): 1343-1347. doi: 10.3724/SP.J.1095.2013.20604 shu

Preparation and Characterizations of LiV₃O₈/V₂O₅ Composite Material

College of Chemical Engineering and Food Science, Hubei University of Arts and Science, Xiangyang 441053, China

Received Date: 25 December 2012
Revised Date: 18 March 2013

Cathode materials for Li-ion batteries such as pure LiV₃O₈ and LiV₃O₈/V₂O₅ composite have been prepared by a hydrothermal reaction method.XRD,SEM and BET were employed to characterize the samples. The results show that the chemical formula of the as-prepared composite is LiV₃O₈·0.2 V₂O₅.The interlayer distance of LiV₃O₈ in the composite is enhanced due to the existence of V₂O₅. SEM results show that pure LiV₃O₈ product consists of small laminar nanocrystallites that stacked together. While numerous cavities have been formed between the stacked laminar nanocrystallites in the composite. The porous structures in the composites can increase the penetration of electrolyte and therefore benefit the lithium intercalation/deintercalation reaction. Charge-discharge cycling tests show that LiV₃O₈/V₂O₅ composite has a higher initial discharge capacity and better cycling performance compared with LiV₃O₈.
- Li-ion batteries,
- composite material,
- hydrothermal synthesis
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Preparation and Characterizations of LiV₃O₈/V₂O₅ Composite Material