HIGH COMPACTION DENSITY NEGATIVE ELECTRODE LITHIUM ION BATTERY AND ELECTROLYTE

Title:

HIGH COMPACTION DENSITY NEGATIVE ELECTRODE LITHIUM ION BATTERY AND ELECTROLYTE

Document Type and Number:

WIPO Patent Application WO/2016/115909

Kind Code:

A1

Abstract:

Disclosed are a high compaction density negative electrode lithium ion battery and an electrolyte. The high compaction density negative electrode lithium ion battery of the present application comprises a positive electrode, a negative electrode, a membrane and an electrolyte, wherein the electrolyte contains, based on the total weight of the electrolyte, 1%-5% of an alkyl sultone, 1%-10% of a fluoroethylene carbonate and 0.1%-2% of a vinyl ethylene carbonate; and the compaction density of a pole piece of the negative electrode is not less than 1.65 g/cm3. In the lithium ion battery of the present application, appropriate amounts of the alkyl sultone, fluoroethylene carbonate and vinyl ethylene carbonate are added into the electrolyte thereof, such that the battery can adopt a negative electrode with a higher compaction density, thus having a relatively large volume capacity density. Moreover, the battery of the present application is easy to infiltrate, can ensure that lithium cannot be separated out, and has a long cycle life at room temperature and a good high-temperature storage performance, thereby laying a foundation for the expanded application of the lithium ion battery.

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Inventors:

SHI QIAO (CN)
LIN MUCHONG (CN)
ZHANG HAILING (CN)
ZHOU DIXIONG (CN)

Application Number:

PCT/CN2015/089152

Publication Date:

July 28, 2016

Filing Date:

September 08, 2015

Export Citation:

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Assignee:

SHENZHEN CAPCHEM TECHNOLOGY CO LTD (CN)

International Classes:

H01M10/056; H01M10/0525

Foreign References:

CN102956919A	2013-03-06
CN103779607A	2014-05-07
CN103928704A	2014-07-16
CN102544582A	2012-07-04
CN104638293A	2015-05-20

Attorney, Agent or Firm:

BORSAM INTELLECTUAL PROPERTY (CN)
深圳市博锐专利事务所 (CN)

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