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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8968938 B1

PDFFull Text
Date of Patent:
Mar. 03, 2015

Filed:

Jan. 12, 2007

Non-aqueous electrolyte and electrochemical device with an improved safety

Applicants:

Young Soo Kim, Yangsan-si, KR;

Soon Ho Ahn, Daejeon, KR;

Joon Sung Bae, Daejeon, KR;

Cha Hun Ku, Daejeon, KR;

Soo Hyun Ha, Busan, KR;

Duk Hyun Ryu, Daejeon, KR;

Sei Lin Yoon, Seoul, KR;

Inventors:

Young Soo Kim, Yangsan-si, KR;

Soon Ho Ahn, Daejeon, KR;

Joon Sung Bae, Daejeon, KR;

Cha Hun Ku, Daejeon, KR;

Soo Hyun Ha, Busan, KR;

Duk Hyun Ryu, Daejeon, KR;

Sei Lin Yoon, Seoul, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Laura Weiner

Int. Cl.
CPC ...
H01M 6/18 (2006.01); H01M 10/0567 (2010.01); H01M 10/0569 (2010.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 10/052 (2010.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0567 (2013.01); H01M 10/0569 (2013.01); H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 10/052 (2013.01); H01M 10/4235 (2013.01); H01M 2300/004 (2013.01); Y02E 60/122 (2013.01);
Abstract

Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 10-40 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1. Moreover, disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product. In addition, disclosed is an electrochemical device comprising: an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product.

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