高温高能机械力法制备LiFePO_4/C电池材料
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摘要
以LiH_2PO_4为锂源,Fe_2O_3为铁源,葡萄糖为还原剂和碳源,使用高温高能机械力法成功制备性能良好的Li Fe PO4/C正极材料。利用XRD、SEM、电化学性能测试等方法研究产物的结构、形貌及电化学性能。结果表明,制备材料为类球型橄榄石型结构,平均粒径为0.5μm;在0.1C时,首次放电比容量为152.5m Ahg~(-1)。
引文
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[8]Liu Y Y,Cao C B,Li J,Enhanced electrochemical performance of carbon nanospheres-Li Fe PO4 composite by PEG based sol-gel synthesis,Electrochim.Acta.2010,55:3921-3926.
[9]X.W.Liu,H.Wei,Y.F.Deng,Z.Shi,G.Chen,Synthesis of sub-micrometer Lithium iron phosphate particles using supercritical hydrothermal method for lithium batteries,J.Shanghai Jiaotong Univ.(Sci.).2012,17:517-522.
[10]G.X.Wang,R.Liu,M.Chen,H.C.Kang,H.Kang,X.Li,K.Yan,A novel synthesis of spherical Li Fe PO4/C composite using Fe1.5P and mixed lithium salts via oxygen permeation,Korean J.Chem.Eng.2012,29:1094-1101.
[2]Konarova M,Taniguchi I.Preparation of Li Fe PO4/C composite powders by ultrasonic spray pyrolysis followed by heat treatment and their electrochemical properties[J].Mater.Res.Bull.2008,43:3305-3317.
[3]Wang Z H,Yuan L X,Zhang W X,et al.,Li Fe0.8Mn0.2PO4/C cathode material with high energy density for lithium-ion batteries[J].Alloys and Compounds 2012,532:25–30.
[4]Pan F F,Wang W L.Synthesis and characterization of core–shell F-doped Li Fe PO4/C composite for lithium-ion batteries,J Solid State Electrochem 2012,16:1423–1427.
[5]Muxina Konarova,Izumi Taniguchi,Synthesis of carbon-coated Li Fe PO4 nanoparticles with high rate performance in lithium secondary batteries[J].J.Power Sources 2010,195:3661-3667.
[6]Konarova M,Taniguchi I.Physical and electrochemical properties of Li Fe PO4 nanoparticles synthesized by a combination of spray pyrolysis with wet ball-milling[J].Journal of Power Sources,2009,194:1029-1035.
[7]Huang Y H,Ren H B,Yin S Y,et al.Synthesis of Li Fe PO4/C composite with high-rate performance by starch solassisted rheological phase method[J].Journal of Power Sources 2010,195:610–613.
[8]Liu Y Y,Cao C B,Li J,Enhanced electrochemical performance of carbon nanospheres-Li Fe PO4 composite by PEG based sol-gel synthesis,Electrochim.Acta.2010,55:3921-3926.
[9]X.W.Liu,H.Wei,Y.F.Deng,Z.Shi,G.Chen,Synthesis of sub-micrometer Lithium iron phosphate particles using supercritical hydrothermal method for lithium batteries,J.Shanghai Jiaotong Univ.(Sci.).2012,17:517-522.
[10]G.X.Wang,R.Liu,M.Chen,H.C.Kang,H.Kang,X.Li,K.Yan,A novel synthesis of spherical Li Fe PO4/C composite using Fe1.5P and mixed lithium salts via oxygen permeation,Korean J.Chem.Eng.2012,29:1094-1101.