Cathode material for lithium ion secondary battery, cathode member, lithium ion secondary battery, and production method for said cathode material
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United States of America Patent
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Jan 12, 2016
Grant Date -
May 22, 2014
app pub date -
Jul 2, 2012
filing date -
Jul 4, 2011
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Abstract
Provided is a cathode material for a lithium ion secondary battery that includes a composite grain formed of lithium iron silicate crystals or lithium manganese silicate crystals and a carbon material. The composite grain has a sea-islands structure in which the lithium iron silicate crystals or lithium manganese silicate crystals are scattered like islands in the carbon material, and the islands have an average value of circle-equivalent diameter of smaller than 15 nm.
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