Energy Conservation and Management Strategies for Commercial Li-Ion Batteries in Telecommunication Applications

Abstract:

In addition to cost and lifetime, important factors in using lithium-ion (Li-ion) batteries as a backup power supply in telecommunication applications are safety and the flatness of discharge voltage to maintain compatibility with existing systems based on lead storage batteries. We have been researching Li-ion batteries using manganese spinel as cathode material from the viewpoints of flat discharge voltage and thermal stability in the event of overcharging or internal short-circuits. The safety of the Li-ion battery was improved by adding a phosphazene flame retardant to the electrolytic solution and cathode of the battery. Then, with the aim of extending battery lifetime, some of the manganese in the cathode was replaced by another metallic element, which showed favorable results.

• Periodical: Advances in Science and Technology (Volume 72)
• Pages: 325-330
• DOI: https://doi.org/10.4028/www.scientific.net/AST.72.325
• Online since: October 2010
• Authors: Tomonobu Tsujikawa, K. Yabuta, T. Matsushita, M. Arakawa, K. Hayashi
• Keywords: Flame Retardant, Large Capacity, Lithium-Ion Battery, Long Life

References

[1] A. Blyr and C. Sigala, J. Electrochem. Soc., 145, 194 (1998).

[2] T. Tsujikawa, K. Yabuta, T. Matsushita, K. Hayashi, and M. Arakawa, Abstract for 216th ECS Meeting, 715 (2009).

[3] S. Komaba, N. Kumagai, Y. Kataoka, Electrochimica Acta, 47, 1229-1239 (2002).

[4] T. Tsujikawa, K. Yabuta, T. Matsushita, T. Matsushima, K. Hayashi, and M. Arakawa, J. Power Sources, 189, 429 (2009).

DOI: 10.1016/j.jpowsour.2009.02.010