Negative electrode for secondary battery comprising CMC-Li salt and lithium secondary battery comprising the same
AssigneeLG Chem, Ltd.
InventorsKwang Ho Jeong, Yecheol Rho, Jung Woo Yoo, Je Young Kim
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Abstract
Disclosed is a negative electrode for secondary batteries including a negative electrode mix applied to a current collector, the negative electrode mix including a negative electrode active material, a thickening agent and an aqueous binder, wherein the thickening agent is a carboxymethyl cellulose lithium salt (CMC—Li salt) having a substitution degree of a hydroxyl group (—OH) by a carboxymethyl lithium group (—CH2COOLi) of 0.7 to 1.5 and the thickening agent is present in an amount of higher than 0.6% by weight and not higher than 1.4% by weight, with respect to the total weight of the negative electrode mix.
Claims13
A negative electrode for secondary batteries, comprising:
- a current collector;
- and
- a negative electrode mix disposed on the current collector, the negative electrode mix comprising a negative electrode active material, a thickening agent and an aqueous binder,
- wherein the thickening agent is a carboxymethyl cellulose lithium salt (CMC—Li salt) having a substitution degree of a hydroxyl group (—OH) by a carboxymethyl lithium group (—CH2COOLi) of 0.7 to 1.5 and has a number average molecular weight of 120×104 to 350×104, and the thickening agent is present in an amount of higher than 0.6% by weight and not higher than 1.4% by weight, with respect to the total weight of the negative electrode mix.
Dependencies are inferred from the claim text.