Anode electrodes for secondary battery and lithium secondary battery containing the same
View Patent ↗Disclosed is an anode for secondary batteries, in which an anode mixture including an anode active material and a binder is coated on a current collector, wherein the binder includes a homopolymer having a molecular weight of 1,000,000 to 1,400,000 and the anode active material includes a lithium metal oxide represented by Formula 1 below: Li x M y O z (1) wherein M is Ti, Sn, Cu, Pb, Sb, Zn, Fe, In, Al, or Zr; and x, y, and z are determined according to oxidation number of M.
1. An anode for secondary batteries, in which an anode mixture comprising an anode active material and a binder is coated on a current collector,
wherein the binder comprises a homopolymer having a molecular weight of 1,100,000 to 1,300,000,
wherein the homopolymer is polyvinylidene fluoride (PVdF),
wherein an amount of the binder is 4 wt. % to 12 wt. % based on an amount of solids of the anode mixture, and
wherein the anode active material comprises a lithium metal oxide of Li 1.33 Ti 1.67 O 4 .
2. A secondary battery comprising the anode according to claim 1 .
3. The secondary battery according to claim 2 , wherein the secondary battery is a lithium secondary battery.
4. A battery module comprising the secondary battery according to claim 2 as a unit cell.
5. A battery pack comprising the battery module according to claim 4 .
6. A device comprising the battery pack according to claim 5 .
7. The device according to claim 6 , wherein the device is an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a system for storing power.