Capacity fade of Li-ion cells: comparison of DC and ENREV charging protocols

Author

Popov, B.N. ; Durairajan, A. ; Podrazhansky, Y. ; Cope, R.C.

Author_Institution

Dept. of Chem. Eng., South Carolina Univ., Columbia, SC, USA

fYear

2000

fDate

11-14 Jan. 2000

Firstpage

185

Lastpage

191

Abstract

Sony 18650S Li-ion cells have been cycled using direct current and ENREV pulse charging (CC-CV) protocols. The influence of the charging protocol on the capacity fade of these batteries has been analyzed using cyclic voltammetry, galvanostatic charge-discharge and impedance spectroscopy. Batteries with different cycle numbers charged using ENREV pulse charging protocol showed superior charge transfer performance and rate capabilities and more than 90% retention of the initial capacity after 800 cycles compared with 64% retention of capacity observed for batteries charged using DC charge protocol.

Keywords

battery chargers; lithium; secondary cells; voltammetry (chemical analysis); ENREV pulse charging protocol; Li; Li-ion secondary cells; battery cycling; capacity fade; capacity retention; charge transfer performance; cyclic voltammetry; direct current charging protocol; galvanostatic charge-discharge; impedance spectroscopy; rate capabilities; Batteries; Boron; Charge transfer; Electrodes; Fading; Impedance; Lithium; Particle separators; Protocols; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Battery Conference on Applications and Advances, 2000. The Fifteenth Annual

Conference_Location

Long Beach, CA, USA

ISSN

1089-8182

Print_ISBN

0-7803-5924-0

Type

conf

DOI

10.1109/BCAA.2000.838402

Filename

838402