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1. (WO2013157827) ELECTRODE ASSEMBLY INCLUDING DIFFERENTLY SHAPED POSITIVE ELECTRODE AND NEGATIVE ELECTRODE, AND SECONDARY BATTERY

Pub. No.:    WO/2013/157827    International Application No.:    PCT/KR2013/003205
Publication Date: Fri Oct 25 01:59:59 CEST 2013 International Filing Date: Wed Apr 17 01:59:59 CEST 2013
IPC: H01M 2/26
H01M 2/30
Applicants: LG CHEM, LTD.
주식회사 엘지화학
Inventors: LIM, Soo Hyun
임수현
LEE, Min Hee
이민희
LEE, Jae Hyun
이재헌
LEE, Seong Min
이성민
KIM, Jihyun
김지현
PARK, Tae Jin
박태진
Title: ELECTRODE ASSEMBLY INCLUDING DIFFERENTLY SHAPED POSITIVE ELECTRODE AND NEGATIVE ELECTRODE, AND SECONDARY BATTERY
Abstract:
The present invention provides an electrode assembly comprising: a plurality of alternately arranged positive plates and negative plates; a separation layer interposed between the positive plates and negative plates; a plurality of positive tabs respectively formed on the plurality of positive plates; a plurality of negative tabs respectively formed on the plurality of negative plates; a positive lead coupled to the plurality of positive tabs; and a negative lead coupled to the plurality of negative tabs, wherein i) the shapes of the positive tabs and the negative tabs are different, and the widths of the positive tabs and the negative tabs are 2% to 100% of the length of the electrode surface on which the tabs are formed, or ii) the positive tabs and the negative tabs are asymmetrically positioned on the electrode surface on which the positive tabs and the negative tabs are formed, and the widths of the positive tabs and the negative tabs are 5% to 45% of the length of the electrode surface.