COMPOSITE PARTICLES, METHOD FOR MANUFACTURING SAME, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL
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United States of America Patent
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Jun 23, 2016
app pub date -
Jul 4, 2014
filing date -
Jul 23, 2013
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Abstract
An object of the present invention is to provide a negative electrode active material that can bring about improved charge/discharge cycle characteristics of nonaqueous electrolyte secondary cells that use silicon-containing particles as the negative electrode active material, and to provide a method for manufacturing the negative electrode active material. The method for manufacturing composite particles according to the present invention includes a mixing step and an annealing step. In the mixing step, a mixed powder is produced by mixing silicon phase-containing particles with a thermoplastic organic material powder. The mixed powder is annealed in the annealing step. The composite particles according to the present invention are obtained by this method for manufacturing composite particles.
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