Negative electrode active material for nonaqueous electrolyte battery, method of producing the same, nonaqueous electrolyte battery and battery pack
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United States of America Patent
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Feb 3, 2015
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N/A
app pub date -
Sep 21, 2011
filing date -
Mar 25, 2009
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Abstract
According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 Å or more in the powder X-ray diffraction method using a Cu—Kα radiation source, thereby making an attempt to improve effective capacity.
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