Patent ID: 11942593
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 0:
1. A lithium battery comprising:
a cathode comprising a cathode active material;
an anode comprising an anode active material;
an electrolyte disposed between the cathode and the anode; and
a separator impregnated with the electrolyte,
wherein the separator comprises cellulose nanofibers, and
wherein a differential scanning calorimetry (DSC) thermogram of the separator impregnated with the electrolyte does not show an exothermic reaction peak as represented by a differential value (dH/dT) within a temperature range of about 150° C. to about 200° C.,
wherein the cellulose nanofibers comprise carboxyl group-containing microbial cellulose nanofibers,
wherein the carboxyl group of the carboxyl group-containing microbial cellulose nanofibers is bound to a carbon atom of a pyranose ring and is represented by Formula a or b below:

—R1—O—R2—COOM  <Formula a>

—O—R2—COOM,  <Formula b>

wherein R1 and R2 are each independently a substituted or unsubstituted C1-C10 alkylene group, and M is hydrogen or an alkali metal.