Synergistic Effect of Charge/Discharge Cycle and Storage in Degradation of Lithium-ion Batteries for Mobile Phones

Konferenz: Intelec '05 - Telecommunications Conference - 27th International Telecommunication Energy Conference
18.09.2005 - 22.09.2005 in Berlin, Germany

Tagungsband: Intelec '05 - Telecommunications Conference

Seiten: 6Sprache: EnglischTyp: PDF

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Ichimura, Masahiro; Shimomura, Makoto (NTT-BTI, 3-9-11 Midori-cho, Musashino-shi, Tokyo, 180-8585, Japan)
Takeno, Kazuhiko; Shirota, Remi (NTT DoCoMo, 11-1, Nagata-cho 2-chome, Chiyoda-ku, Tokyo, 100-6150, Japan)
Yamaki, Jun-ichi (Kyushu Univ., 6-1, Kasuga-shi, Fukuoka, 816-8580, Japan)

We studied the life characteristics of LiCoO2 based lithium-ion batteries for mobile phones using a high-temperature acceleration technique. The charge/discharge cycle and storage life of the batteries were systematically examined at 50deg C. We also examined the synergistic effect of combining these two elements. The results indicated that the generation and destruction of the solid electrolyte interface were closely related to the life characteristics of lithium-ion batteries.