Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2006-03-22
2011-11-08
Ryan, Patrick (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C252S182100, C429S231500, C429S231900, C429S231950
Reexamination Certificate
active
08053115
ABSTRACT:
It is an object of the present invention to provide an active material for lithium ion battery having an excellent discharge capacity in the potential flat part and a high-performance and long-life lithium ion battery, and particularly to provide a technology of improving voltage flatness. The present invention provides an active material for lithium ion battery represented by a composition formula: Li[Li(1-2x)/3MgxTi(5-x)/3]O4(0<x<1/2) in which a part of the element of lithium titanate is substituted with Mg, and a lithium ion battery using this active material as a negative electrode active material.
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Sun et al. “Synthesis and electrochemical characterization of spinel Li[Li(1-x)/3CrxTi(5-2x)/3]O4 anode materials”, Journal of Power Sources 125, 242-245, 2004.
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Shahua Huang et al, Preparation and Electrochemical performance of spinel-type compounds Li4AlyTi5-yO12, , Journal of the Electrochemical Society, vol. 152, No. 1, Jan. 2005, pp. A186-A190.
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Endo Daisuke
Inamasu Tokuo
Katayama Yoshihiro
Nukuda Toshiyuki
GS Yuasa International Ltd.
Kanesaka Manabu
Mohaddes Ladan
Ryan Patrick
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