论文信息 - Studies on Capacity Fade of Lithium-Ion Batteries

Studies on Capacity Fade of Lithium-Ion Batteries

The capacity fade of Sony 18650S Li-ion cells has been analyzed using cyclic voltammetry, impedance spectroscopy and electron . . . probe microscopic analysis EPMA . The surface resistance at both the positive LiCoO and negative carbon electrodes were found to 2 increase with cycling. This increase in resistance contributes to decreased capacity. Impedance data reveal that the interfacial resistance at . LiCoO electrode is larger than that at the carbon electrode. The impedance of the positive electrode LiCoO dominates the total cell 2 2 resistance initially and also after 800 charge-discharge cycles. EPMA analysis on carbon electrodes taken from the fresh and cycled cell show the presence of oxidation products in the case of cycled cells. No change in the electrolyte resistance is seen with cycling. q 2000 Elsevier Science S.A. All rights reserved.

[1] D. Aurbach,et al. The Correlation Between the Surface Chemistry and the Performance of Li‐Carbon Intercalation Anodes for Rechargeable ‘Rocking‐Chair’ Type Batteries , 1994 .

[2] Ralph E. White,et al. Capacity Fade Mechanisms and Side Reactions in Lithium‐Ion Batteries , 1998 .

[3] B. Scrosati,et al. Lithium-ion rechargeable batteries , 1994 .

[4] J. Mondori,et al. Mechanism leading to irreversible capacity loss in Li ion rechargeable batteries , 1995 .

[5] D. Linden. Handbook Of Batteries , 2001 .

[6] N. Munichandraiah,et al. Electrode impedance parameters and internal resistance of a sealed LiC/Li1-xCoO2 lithium-ion rechargeable battery , 1997 .

[7] D. Aurbach,et al. Common Electroanalytical Behavior of Li Intercalation Processes into Graphite and Transition Metal Oxides , 1998 .

[8] Young-Il Jang,et al. TEM Study of Electrochemical Cycling‐Induced Damage and Disorder in LiCoO2 Cathodes for Rechargeable Lithium Batteries , 1999 .

[9] E. Peled,et al. An Advanced Tool for the Selection of Electrolyte Components for Rechargeable Lithium Batteries , 1998 .

[10] John B. Goodenough,et al. AC impedance analysis of polycrystalline insertion electrodes: application to Li1−xCoO2 , 1985 .

[11] B. Popov,et al. Electrochemical investigation of CrO2.65 doped LiMn2O4 as a cathode material for lithium-ion batteries , 1998 .

[12] Ralph E. White,et al. Characterization of Commercially Available Lithium-Ion Batteries , 1998 .