PRODUCTION METHOD OF BATTERY ACTIVE MATERIAL, BATTERY ACTIVE MATERIAL, NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK
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United States of America Patent
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app pub date -
Nov 6, 2014
filing date -
Nov 8, 2013
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Abstract
A production method of a battery active material of the present embodiment includes a step of obtaining a coprecipitated product containing Ti and Nb by mixing a solution with a pH of 5 or lower, in which a Ti compound is dissolved, and a solution with a pH of 5 or lower, in which a Nb compound is dissolved, such that molar ratio of Ti and Nb (Nb/Ti) is adjusted within a range of 1≦Nb/Ti≦28, and then further mixing with an alkali solution with a pH of 8 or higher; and a step of burning the coprecipitated product under condition of 635° C. or higher and 1200° C. or lower.
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