Title:
ELECTROCHEMICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/105176
Kind Code:
A1
Abstract:
An electrochemical device of the present invention comprises: a case; an electrode assembly disposed inside the case and comprising a positive electrode, a negative electrode, and a separator interposed between the negative electrode and the positive electrode; and an electrolyte injected into the case, wherein, on the basis of the total volume (CV) of an empty space inside the case according to equation 1 below, the volume (EV) of a free space according to equation 2 below is 0-45 vol%. The contents of equations 1 and 2 are the same as disclosed in the specification. The electrochemical device can solve a problem of accelerating the capacity degradation, causing by reducing the reaction area on surfaces of the electrodes and further increasing the side reaction, through the gas generated from an oxidation reaction of the electrolyte due to a high voltage.
Inventors:
SONG JOO-YONG (KR)
Application Number:
PCT/KR2015/014358
Publication Date:
June 30, 2016
Filing Date:
December 28, 2015
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/04; H01M10/052; H01M50/574; H01M50/107
Foreign References:
| JP5582246B2 | 2014-09-03 | |||
| KR101010377B1 | 2011-01-21 | |||
| KR100873564B1 | 2008-12-12 | |||
| JP2014036010A | 2014-02-24 | |||
| KR101112446B1 | 2012-02-20 |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
특허법인 필앤온지 (KR)
특허법인 필앤온지 (KR)
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