| 固相-水热法制备LiFePO4-Li3V2（PO4）3复合材料及其电化学性能（英文） |
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| 引用本文： | 郭孝东,钟本和,刘恒,宋杨,文嘉杰,唐艳.固相-水热法制备LiFePO4-Li3V2（PO4）3复合材料及其电化学性能（英文）[J].中国有色金属学会会刊,2011,21(8):1761-1766. |
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| 作者姓名： | 郭孝东 钟本和 刘恒 宋杨 文嘉杰 唐艳 |
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| 作者单位： | 四川大学化学工程学院;四川大学材料科学与工程学院; |
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| 基金项目： | Project (2007BAQ01055) supported by the National Key Technology R&D Programs of China; Project (50574063) supported by theNational Natural Science Foundation of China |
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| 摘 要： | 分别采用固相-水热法和球磨法制备磷酸亚铁锂-磷酸钒锂复合正极材料(LiFePO4-Li3V2(PO4)3)。电化学性能测试表明,LiFePO4-Li3V2(PO4)3复合正极材料的电化学性能远远高于 LiFePO4和 Li3V2(PO4)3单独作为正极材料的性能,并且以固相-水热法制备的复合材料性能优于以球磨法制得的复合材料。研究发现 LiFePO4-Li3V2(PO4)3复合材料有 4 个氧化还原峰,相当于 LiFePO4 和 Li3V2(PO4)3 氧化还原峰的叠加。采用固相-水热法制备的LiFePO4-Li3V2(PO4)3 复合材料形貌较为规则,且有新相物质产生,这是导致其电化学性能较好的原因。
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| 关 键 词： | LiFePO4 Li3V2(PO4)3 复合材料 固相-水热法 |
| 收稿时间： | 26 August 2010 |
Electrochemical performance of LiFePO4-Li3V2(PO4)3 composite material prepared by solid-hydrothermal method |
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| Xiao-dong GUO,Ben-he ZHONG,Heng LIU,Yang SONG,Jia-jie WEN,Yan TANG.Electrochemical performance of LiFePO4-Li3V2(PO4)3 composite material prepared by solid-hydrothermal method[J].Transactions of Nonferrous Metals Society of China,2011,21(8):1761-1766. |
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| Authors: | Xiao-dong GUO Ben-he ZHONG Heng LIU Yang SONG Jia-jie WEN Yan TANG |
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| Affiliation: | aSchool of Chemical Engineering, Sichuan University, Chengdu 610065, China;bSchool of Materials Science and Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | LiFePO4-Li3V2(PO4)3 composites were synthesized by solid-hydrothermal method and by ball milling, respectively. The electrochemical performance of the solid-hydrothermally obtained materials (C-LFVP) was significantly improved compared with LiFePO4 (LFP) and Li3V2(PO4)3 (LVP), and it was also much better than that of the ball-milled LiFePO4-Li3V2(PO4)3 (P-LFVP). C-LFVP and P-LFVP both had four REDOX peaks (voltage plateaus), which coincided with that of LFP and LVP. Some new trace substances were found in C-LFVP which had more perfect morphology, this was responsible for the better electrochemical performance of C-LFVP than P-LFVP. |
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| Keywords: | LiFePO4 Li3V2(PO4)3 composite materials solid-hydrothermal |
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