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Abstract

Layered Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_(2) materials have been prepared by a solid-state pyrolysis method.Experiments of XRD,SEM,cyclic voltammetry and charge/discharge cycling were carried out.It can be learned that when calclined at 800 ℃,the sample showed the highest first discharge capacity of 178.8 mAh·g~(-1) at a current density of 20 mA/g in the voltage range 2.3~4.6 V.

Keywords

Li battery, Cathode material, Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_(2), Solid-state pyrolysis

Publication Date

2006-08-28

Online Available Date

2006-08-28

Revised Date

2006-08-28

Received Date

2006-08-28

References

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[2]Yao Chen,W ang G X.Synthesis and characterization ofL iCoxMnyN i1-x-yO2as a cathode m aterial for secondarylith ium batteries[J].J.Power Sources,2003,119:184.
[3]K im JM,Chung H T.Role of transition m etals in lay-ered L i[N i,Co,Mn]O2under electrochem ical operation[J].E lectroch im ica Acta,2004,49:3573.
[4]Tran N,Croguennec L,Jordy C.Influence of the syn-thesis route on the electrochem ical properties of L iN i0.425Mn0.425Co0.15O2[J].Solid State Ion ics,2005,176:1539.
[5]Cao H,Zhang Yao.Synthesis and electrochem ical char-acteristics of layered L iN i0.6Co0.2Mn0.2O2cathode m ate-rial for lith ium ion batteries[J].Solid State Ion ics,2005,176:1207.
[6]Sh in H S,Park H S.Synthesis of L i[N i0.475Co0.05Mn0.475]O2cathode m aterials via a carbonate process[J].Solid State Ion ics,2005,176:2577.
[7]Cho TH,Park SM.E ffect of synthesis cond ition on thestructural and electrochem ical properties of L i[N i1/3Mn1/3Co1/3]O2prepared by carbonate co-prec ip itationm ethod[J].J.Power Sources,2005,142:306.

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