LITHIUM ION RECHARGEABLE BATTERIES & THE ADDITIVE FOR LITHIUM ION RECHARGEABLE BATTERIES WHICH PREVENTS INCREASE OF THE VISCOSITY
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Aug 25, 2011
filing date -
Oct 18, 2010
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Abandoned
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Abstract
The preparation of a slurry so as to exhibit no strong alkalinity not only needs a strict pH control, but also needs once dispersing a positive electrode material in water and the operation of drying after the treatment, and other operations, thereby leading to the complication of the operations and a decrease in the yield. In consideration of the above-mentioned problems, the present invention provides a method for producing a positive electrode plate for a lithium ion rechargeable battery, which exhibits less complication of the operations and less decrease in the yield and can prevent the gelation of a positive electrode material slurry. The above-mentioned problems can be solved by a positive electrode for a lithium ion rechargeable battery containing a positive electrode active material capable of absorbing/desorbing lithium ions, a nitrile group-containing polymer, and a binder.
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