Abstract: Provided are an electrode assembly and a secondary battery including the same. The electrode assembly includes a positive electrode having a positive electrode coating portion, a negative electrode having a negative electrode coating portion, and a separator disposed between the positive electrode and the negative electrode. The negative electrode coating portion includes lithium titanate oxide (LTO). An area of the positive electrode coating portion is larger than that of the negative electrode coating portion. Accordingly, all materials in the LTO contained in the negative electrode coating portion participate in charge/discharge operations, so that generation of gas due to an additional reaction occurring between LTO and electrolyte may be suppressed, thereby effectively preventing the secondary battery from swelling.

Abstract: A secondary battery includes an electrode assembly and a pouch housing the electrode assembly. The electrode assembly includes a first negative electrode collector plate having a first negative electrode non-coating portion, a first positive electrode collector plate having a first positive electrode non-coating portion and which is in correspondence with the first negative electrode collector plate, and a unit stack body between the first positive and negative electrode collector plates. The unit stack body includes a second positive electrode collector plate having a second positive electrode non-coating portion electrically connected to the first positive electrode non-coating portion, a second negative electrode collector plate having a second negative electrode non-coating portion electrically connected to the first negative electrode non-coating portion, and a separator disposed between the second positive and negative electrode collector plates.

Abstract: Provided are an electrode assembly and a secondary battery including the same. The electrode assembly includes a positive electrode having a positive electrode coating portion, a negative electrode having a negative electrode coating portion, and a separator disposed between the positive electrode and the negative electrode. The negative electrode coating portion includes lithium titanate oxide (LTO). An area of the positive electrode coating portion is larger than that of the negative electrode coating portion. Accordingly, all materials in the LTO contained in the negative electrode coating portion participate in charge/discharge operations, so that generation of gas due to an additional reaction occurring between LTO and electrolyte may be suppressed, thereby effectively preventing the secondary battery from swelling.