Lg Chem, Ltd

Lg Energy Solution, Ltd.

Hyun Won Lee

Do Hwa Jung

Jin Young Son

Ye Lin Kim

Sang Hoon Choy

Joon Sung Bae

The present invention relates to an electrode assembly for a secondary battery. The electrode assembly for the secondary battery comprises a radical unit comprising first and second electrode sheets each of which is folded so that both ends thereof overlap each other; and a first separator folded several times and having an upper folded portion into which the first electrode sheet is coupled to be fitted and a lower folded portion into which the second electrode sheet is coupled to be fitted, wherein, in the radical unit, the folded portions of the first and second electrode sheets are cut to form two first electrodes and two second electrodes, which are completely separated from each other, and the first electrode, the first separator, the second electrode, the first separator, the first electrode, the first separator, and the second electrode successively stacked.

Electrode assembly for secondary battery and method for manufacturing the same

The present invention relates to positive electrode active material slurry including two different types of binders in a specific ratio and having a high solid concentration and low viscosity, a positive electrode including a positive electrode active material layer formed therefrom, and a lithium secondary battery including the positive electrode.

Positive electrode active material slurry including two types of binders and positive electrode prepared therefrom

The present invention relates to a secondary battery laminating device. The secondary battery laminating device for bonding an electrode assembly to a separator includes a transfer part transferring the electrode assembly in a state in which the electrode assembly is disposed on the separator; and a bonding part disposed on a transfer path of the transfer part to contact an entire surface of the electrode assembly and apply heat to the electrode assembly, thereby bonding the electrode assembly to the separator. Thus, a uniform pressure is applied to the electrode assembly to firmly bond the electrode assembly to the separator, thereby manufacturing a secondary battery having superior durability.

Secondary battery laminating device and secondary battery laminating method

Provided is a dual coating method for an electrode, which coats the electrode of a battery. The dual coating method for an electrode includes transferring the electrode, coating the transferred electrode with a first coating solution, and coating the primarily-coated electrode with a second coating solution different from the first coating solution.

Growing community of inventors

Daejeon, South Korea

Hyun Won Lee