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LITHIUM SECONDARY BATTERY HAVING ANODE CONTAINING AQUEOUS BINDER

  • US 20150030923A1
  • Filed: 02/07/2013
  • Published: 01/29/2015
  • Est. Priority Date: 02/16/2012
  • Status: Active Grant
First Claim
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1. A lithium secondary battery comprising an anode coated with an anode mixture comprising an anode active material, a cathode coated with a cathode mixture comprising a cathode active material, and a non-aqueous electrolyte,wherein the anode mixture comprises, as aqueous binders, carboxymethyl cellulose (CMC) having a degree of substitution of a hydroxyl group (—

  • OH) with a carboxymethyl group (—

    CH2CO2H) of 0.7 to 1.2, a molecular weight (Mn) of 500,000 to 900,000, and a pH of 6.5 to 8.0, and styrene-butadiene rubber (SBR) having a particle diameter of 90 nm to 150 nm and a tensile strength of 90 kgf to 160 kgf, andthe anode has an electrode coating amount of 10 to 20 mg/cm2.

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