The character of the solid electrolyte interface(SEI layer) on the surface of LiCoO_(2) formed in the electrolytes contained different salt such as LiPF_(6)、LiClO_(4) and LiBF_(4) were studied in this paper.The results showed that the SEI film exists in all three electrolytes after the processes of charge and discharge.The morphological character and the formation voltage of the SEI layer of LiCoO_(2) were different in different electrolytes.The electrochemical performance of the battery such as reversible capacity,average discharge voltage and electrochemical impedance were affected significantly by SEI film formed in different electrolytes.


Lithium ion battery, Electrolyte salt, SEI film

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[1]Bu iel E,Dahn J R.Reduction of the irreversib le capac-ity in hard-carbon anode m aterials prepared from sucrosefor L i-ion batteries[J].J.E lectrochem.Soc.,1998,145:1977~1981.
[2]DONG Quan-Feng(董全峰),ZHENG M ing-Sen(郑明森),HUANG Zhen-Cai(黄镇财),et al.The synthe-sis,characteristics and perform ance of CNT compositesas anod ic m aterials in litium-ion battery[J].E lectro-chem istry(in Ch inese),2005,11(2):152~156.
[3]Buqa H,Golob P,W interM,et al.Mod ified carbonsfor improved anodes in lith ium ion cells[J].J.PowerSources,2001,97~98:122~125.
[4]Kum ar T P,Stephan A M,Thayananth P,et al.Ther-m ally oxid ized graph ites as anodes for lith ium-ion cells[J].J.Power Sources,2001,97~98,118~121.
[5]Chevallier F,Gautier S,Salvetat J P,et al.E ffects ofpost-treatm ents on the perform ance of hard carbons inlith ium cells[J].J.Power Sources,2001,97~98:143~145.
[6]Aurbach D,E in-E liY,Chusid O,et al.The correlationbetween the surface chem istry and the perform ance ofL i-carbon intercalation anodes for rechargeab le"rock ingchair"type batteries[J].J.E lectrochem.Soc.,1994,141:603~611.
[7]Aurbach D,Zaban A,Shechter A,et al.The study ofelectrolyte solutions based on ethylene and d iethyl car-bonates for rechargeab le L i batteries.I.L i anodes[J].J.E lectrochem.Soc.,1995,142:2873~2878.
[8]Aurbach D,Zaban A,E in-E li Y,et al.Recent stud ieson the correlation between surface chem istry,morpholo-gy,three-d im ensional structures and perform ance of L iand L i-C intercalation anodes in several important elec-trolyte system s[J].J.Power Sources,1997,68:91~98.
[9]Aurbach D,Gamolsky K,M arkovsky B,et al.TheStudy of Surface Phenom ena Related to E lectrochem icalL ith ium Intercalation into L ix〗MOy〗Host M aterials(M=N i,Mn)[J].J.E lectrochem.Soc.,2000,147:1322~1331.
[10]Aurbach D,LeviM D,Levi E,et al.Common elec-troanalytical behavior of L i intercalation processes intograph ite and transition m etal oxides[J].J.E lectro-chem.Soc.,1998,145:3024~3034.



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