Title :
Synergistic Effect of Charge/Discharge Cycle and Storage in Degradation of Lithium-ion Batteries for Mobile Phones
Author :
Ichimura, Masahiro ; Shimomura, Makoto ; Takeno, Kazuhiko ; Shirota, Remi ; Yamaki, Jun-ichi
Author_Institution :
NTT-BTI, Tokyo
Abstract :
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 50 degC. 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
Keywords :
lithium; mobile handsets; secondary cells; solid electrolytes; telecommunication power supplies; 50 degC; Li; charge-discharge cycle; high-temperature acceleration technique; lithium-ion batteries; mobile phones; solid electrolyte interfaces; synergistic effect; Acceleration; Batteries; Character generation; Circuit testing; Degradation; Electronic equipment testing; Mobile handsets; Protection; System testing; US Department of Defense;
Conference_Titel :
Telecommunications Conference, 2005. INTELEC '05. Twenty-Seventh International
Conference_Location :
Berlin
Print_ISBN :
978-3-8007-2905-0
DOI :
10.1109/INTLEC.2005.335100
