锂离子电池新材料分析

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锂离子电池替补材料分析Lithiumionbatteries--thenewcomermaterialsLIBTheNewcomerMaterialsLIBTheNewcomerMaterialsLiCoO2Potential:3.9VSpecificCapacity:140mAh/gSpecificEnergy:546Wh/kgLiMn2O4Potential:4.1VSpecificCapacity:100~120mAh/gSpecificEnergy:410~496Wh/kgLiFePO4Potential:3.45VSpecificCapacity:150~170mAh/gSpecificEnergy:518~587Wh/kgCPotential:0.5VSpecificCapacity:374mAh/gSpecificEnergy:LIBTheNewcomerMaterialsLIBTheNewcomerMaterials://(5317):1395-1397.TCOLIBTheNewcomerMaterialsChan,C.K.;Cui,Y.etal.Nat.Nanotechnol2008,3,31.硅及硅基合金LIBTheNewcomerMaterialsYao,Y.;McDowell,M.T.;Cui,Y.etal.NanoLetters2011,11,2949.LIBTheNewcomerMaterialsMagasinski,A.;Yushin,G.etal.Nat.Mater2010,9,353.LIBTheNewcomerMaterialsXinZhao,HaroldH.Kungetal.Adv.EnergyMater.2011,1,1079–1084LIBTheNewcomerMaterialsKwon,Y.;Cho,Chem.Commun.2008,1109.LIBTheNewcomerMaterials白磷(P4)黑磷红磷simplecubicrhombohedralorthorhombicamorphous理论容量:2594mAhg-1P→LixP→LiP→Li2P→Li3P磷及其磷化物紫磷黑磷含量少,合成困难,采用白磷,需要在200℃,1.2GPa(一万多个大气压)条件下合成(J.Am.Chem.Soc.1914,36,1344)LIBTheNewcomerMaterialsPark,C.M.andH.J.Sohn;Adv.Mater.2007,19,2465–2468高能机械球磨可以产生200°以上,约6GPa的环境。足以满足P相变条件:Prog.Mat.Sci.2001,46,1.Metall.Trans.1988,A19,2867.LIBTheNewcomerMaterialsLIBTheNewcomerMaterials现有报道合成黑P的方法依旧摆脱不了高压这一基本原则:R.B.Jacobs,J.Chem.Phys.1937,5,945.H.Krebs,H.Weitz,K.H.Worms,Z.Anorg.Allg.Chem.1953,280,119.I.Shirotani,Mol.Cryst.Liq.Cryst.1982,86,1943.M.Kersting,etal.J.SolidStateChem.2008,181(8),1707-1711LIBTheNewcomerMaterialsC.Marinoetal.Electrochem.Commun.2011,13,346–349LIBTheNewcomerMaterialsMnP4Li7MnP4Souza,D.C.S.,V.Pralong,etal.Science2002,296,2012-2015LIBTheNewcomerMaterialsKim,Y.,H.Hwang,etal.Adv.Mater.,2007,19,92-96LIBTheNewcomerMaterialsLIBTheNewcomerMaterialsKim,M.G.andJ.Cho.Adv.Funct.Mater.,2009,19,(10):1497-1514.LIBTheNewcomerMaterialsKim,M.G.,S.Lee,etal.JournalofTheElectrochemicalSociety,2009,156,89-94LIBTheNewcomerMaterials硫1.硫是绝缘体,导电性很差2.中间产物易溶于电解质,导致其容量迅速衰减LIBTheNewcomerMaterialsJi,X.L.,K.T.Lee,etal.Nat.Mater.2009,8,500-506LIBTheNewcomerMaterialsWang,H.,Y.Yang,etal.NanoLett.2011,11,2644–2647LIBTheNewcomerMaterialsLi-Ti-OLIBTheNewcomerMaterialsLIBTheNewcomerMaterialsLIBTheNewcomerMaterials谢谢

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