Positive electrode for rechargeable lithium battery and rechargeable lithium battery including same

摘要

Disclosed is rechargeable lithium battery that includes a positive electrode including a positive active material layer, a negative electrode including a negative active material and an electrolyte wherein the positive active material layer includes a positive active material, a binder, a conductive material, and an activated carbon, the activated carbon includes micropores in which manganese ions are adsorbed and trapped, and the activated carbon is included in an amount of about 0.1 wt % to about 3 wt % based on the total weight of the positive active material layer.

主权项

1. A rechargeable lithium battery comprising:
a positive electrode comprising a positive active material layer, a negative electrode comprising a negative active material, and an electrolyte wherein the positive active material layer comprises a positive active material, a binder, a conductive material, and an activated carbon, wherein the activated carbon includes micropores having a size of about 5 Å to about 20 Å configured to adsorb and trap manganese ions, and wherein the activated carbon is included in an amount of about 0.1 wt % to about 3 wt % based on the total weight of the positive active material layer; and wherein the activated carbon comprises mesopores having a size greater than about 20 Å and less than or equal to about 500 Å; wherein the volume ratio of micropores to mesopores is 90:10 to 80:20.