Electrode for lithium secondary battery and lithium secondary battery comprising same
The present disclosure relates to an electrode for a lithium secondary battery, the electrode comprising: a current collector layer; a functional layer disposed on the current collector layer; and an active material layer disposed on the functional layer, wherein the functional layer includes a polymer particle having a weight-average molecular weight of 200 to 50,000.
1. A electrode for a lithium secondary battery, comprising
a current collector layer;
a functional layer disposed on the current collector layer; and
an active material layer disposed on the functional layer,
wherein the functional layer comprises a polymer particle having a weight-average molecular weight of 200 to 600.
2. The electrode for a lithium secondary battery of claim 1 , wherein an average particle size of the polymer particle is 0.3 μm to 2.3 μm.
3. The electrode for a lithium secondary battery of claim 1 , wherein an average particle size of the polymer particle is 0.6 μm to 1.0 μm.
4. The electrode for a lithium secondary battery of claim 1 , wherein a thickness of the functional layer is 5 μm to 15 μm.
5. The electrode for a lithium secondary battery of claim 1 , wherein an amount of the polymer particle is 93 wt % to 98.5 wt % based on the functional layer.
6. The electrode for a lithium secondary battery of claim 1 , wherein a melting temperature of the polymer particle is 90° C. to 125° C.
7. A lithium secondary battery, comprising
a positive electrode;
a negative electrode;
a separator disposed between the positive electrode and the negative electrode; and
an electrolyte solution,
wherein at least one of the positive electrode and the negative electrode comprises the electrode for a lithium secondary battery of claim 1 .