NEGATIVE MATERIAL LAYER AND LITHIUM-ION BATTERY APPLYING THE SAME
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United States of America Patent
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May 12, 2016
app pub date -
Oct 30, 2015
filing date -
Nov 6, 2014
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Abstract
The present disclosure provides a negative material layer, which comprises negative active material, conductive agent, binder material and thickening agent. A weight percentage of the binder material in the negative material layer is not more than 2%. The binder material comprises a polymer polymerized from a styrene monomer, an acrylic ester monomer and an acrylic acid monomer. The negative material layer has a small amount of binder material, an excellent ion conductivity; the lithium-ion battery using the negative material layer can avoid lithium precipitation from occurring on a surface of the negative electrode and have an excellent safety performance and an excellent cycle performance in the case of quick and high rate charge.
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