Compared with layered structural anode materials,olivine structural lithium transition-metal phosphate LiMPO4 had better thermal stability.Among these materials,LiMn1-xFexPO4 anode material was prepared by mixing Mn and Fe according to certain proportion,which combined the virtues of both LiFePO4 and LiMnPO4.Therefore,it received much attention from researchers.The research progress in preparation methods of LiMn1-xFexPO4 as anode material in recent five years was reviewed.The advantage and disadvantage of each method were discussed.In addition,the problems existed in this field and the key issues for further research were also discussed.
[1] Masquelier C,Croguennec L.Polyanionic (phosphates,silicates,sulfates) frameworks as electrode materials for rechargeable Li (or Na) batteries[J].Chem Rev,2013,113(8):6552-6591.
[2] Liu T,Wu B B,Wu X D.Realizing Fe substitution through diffusion in preparing LiMn1-xFexPO4-C cathode materials from MnPO4·H2O[J].Solid State Ionics,2014,254(7):72-77.
[3] Yan S Y,Wang C Y,Gu R M,et al.Synergetic Fe substitution and carbon connection in LiMn1-xFexPO4/C cathode materials for enhanced electrochemical performances[J].J Alloys Compd,2015,628(19):471-479.
[4] Chen L,Yuan Y Q,Feng X,et al.Enhanced electrochemical properties of LiFe1-xMnxPO4/C composites synthesized from FePO4·2H2O nanocrystallites[J].J Power Sources,2012,214:344-350.
[5] Zhou X,Deng Y F,Wan L N,et al.A surfactant-assisted synthesis route for scalable preparation of high performance of LiFe0.15Mn0.85PO4/C cathode using bimetallic precursor[J].J Power Sources,2014,265:223-230.
[6] Li B Z,Wang Y,Xue L,et al.Acetylene black-embedded LiMn0.8Fe0.2PO4/C composite as cathode for lithium ion battery[J].J Power Sources,2013,232:12-16.
[7] Liu J L,Liao W J,Yu A S.Electrochemical performance and stability of LiMn0.6Fe0.4PO4/C composite[J].J Alloys Compd,2014,587:133-137.
[8] Tan Z,Wang X Y,Zhou H H.Highly energy density olivine cathode material synthesized by coprecipitation technique[J].Electrochim Acta,2013,90:597-603.
[9] Yang X H,Mi Y Y,Zhang W D,et al.Enhanced electrochemical performance of LiFe0.6Mn0.4PO4/C cathode material prepared by ferrocene-assisted calcination process[J].J Power Sources,2015,275:823-830.
[10] Ding B,Ji G,Ma Y,et al.Increasing the high rate performance of mixed metal phospho-olivine cathodes through collective and cooperative strategies[J].J Power Sources,2014,247:273-279.
[11] Xiong J W,Wang Y Z,Wang Y Y,et al.PVP-assisted solvothermal synthesis of LiMn0.8Fe0.2PO4/C nanorods as cathode material for lithium ion batteries[J].Ceram Int,2016,42(7):9018-9024.
[12] Wang H L,Yang Y,Liang Y Y,et al.LiMn1-xFexPO4 nanorods grown on graphene sheets for ultrahigh-rate-performance lithium ion batteries[J].Angewandte Chemie,2011,50(32):7364-7368.
[13] Hong Y,Tang Z L,Hong Z J,et al.LiMn1-xFexPO4(x=0,0.1,0.2) nanorods synthesized by a facile solvothermal approach as high performance cathode materials for lithium-ion batteries[J].J Power Sources,2014,248(4):655-659.
[14] Liu H Y,Ren L,Li J S,et al.Iron-assisted carbon coating strategy for improved electrochemical LiMn0.8Fe0.2PO4 cathodes[J].Electrochim Acta,2016,212:800-807.
[15] Mi Y Y,Gao P,Liu W,et al.Carbon nanotube-loaded mesoporous LiFe0.6Mn0.4PO4/C microspheres as high performance cathodes for lithium-ion batteries[J].J Power Sources,2014,267:459-468.
[16] Liu W,Gao P,Mi Y Y,et al.Fabrication of high tap density LiFe0.6Mn0.4PO4/C microspheres by a double carbon coating-spray drying method for high rate lithium ion batteries[J].J Mater Chem A,2013,1(7):2411-2417.
[17] Yang L T,Xia Y G,Qin L F,et al.Concentration-gradient LiMn0.8Fe0.2PO4 cathode material for high performance lithium ion battery[J].J Power Sources,2016,304:293-300.
[18] Yang L T,Xia Y G,Fan X,et al.Constructing durable carbon layer on LiMn0.8Fe0.2PO4 with superior long-term cycling performance for lithium-ion battery[J].Electrochim Acta,2016,191:200-206.
[19] Leng F F,Yan X,Jing L Y,et al.Electrospun polycrystalline LixFe0.2Mn0.8PO4/carbon composite fibers for Lithium-ion battery[J].Colloids & Surfaces A,2016,495:54-61.
[20] Kim C,Kang S H,Jeon H J,et al.Electrochemical properties of nanostructured Li[Fe0.9Mn0.1]PO4/C as a cathode material for lithium ion batteries prepared by electrospinning method[J].J Electroceram,2013,31(1-2):204-209.
[21] Jo M,Yoo H,Jung Y S,et al.Carbon-coated nanoclustered LiMn0.71Fe0.29PO4 cathode for lithium-ion batteries[J].J Power Sources,2012,216:162-168.
[22] Zhong Y J,Li J T,Wu Z G,et al.LiMn0.5Fe0.5PO4 solid solution materials synthesized by rheological phase reaction and their excellent electrochemical performances as cathode of lithium ion battery[J].J Power Sources,2013,234:217-222.
基金资助
国家863计划(2015AA034601)