ANODE MATERIAL COMPOSITION FOR A LITHIUM ION BATTERY
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United States of America Patent
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Nov 24, 2016
app pub date -
Sep 10, 2014
filing date -
Sep 10, 2014
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Abstract
An anode material composition for a lithium ion battery includes: an active material unit including a graphite material and a silicon-containing material, the graphite material having a plurality of graphite particles, the silicon-containing material having a plurality of silicon flakes dispersed among the graphite particles; and an additive unit including a binder bonded to the graphite particles and the silicon flakes. The silicon flakes have a length and a thickness. The thickness of the silicon flakes ranges from 20 to 300 nm, and a ratio of the length to the thickness of the silicon flakes ranges from 2:1 to 2000:1.
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