NEGATIVE ELECTRODE WITH CARBON-BASED THIN FILM, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

NEGATIVE ELECTRODE WITH CARBON-BASED THIN FILM, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2018/164494

Kind Code:

A1

Abstract:

The present invention relates to a negative electrode with a carbon-based thin film formed on at least one surface of a lithium metal layer and to a lithium secondary battery comprising the same. According to the present invention, the carbon-based thin film formed on at least one surface of the lithium metal layer not only increases the specific surface area of the negative electrode, but also blocks a side reaction by a direct contact between the lithium metal layer and an electrolyte, thereby suppressing the formation of lithium dendrite and uniformly realizing a current density distribution, and thus improving the cycle performance and reducing overvoltage, leading to an improvement in electrochemical performance of the lithium secondary battery.

More Like This:

JP4834814	Methods for Producing Structured Particles Consists of Silicon or Silicon-Based Materials and Their Use in Lithium Batteries
WO/2014/148064	SLURRY COMPOSITION FOR NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY
WO/2017/201376	PROTECTIVE LAYERS FOR ELECTRODES AND ELECTROCHEMICAL CELLS

Inventors:

CHOI HEEWON (KR)
KIM EUN KYUNG (KR)
KIM KI HWAN (KR)
WOO SANGWOOK (KR)
SHON JEONG WOO (KR)
CHAE OHBYONG (KR)

Application Number:

PCT/KR2018/002739

Publication Date:

September 13, 2018

Filing Date:

March 08, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/134; C23C14/06; C23C14/34; C23C14/58; C23C16/26; C23C16/56; H01M4/1395; H01M10/052

Foreign References:

KR20130067920A	2013-06-25
JP2010086733A	2010-04-15
KR20040026208A	2004-03-30
KR20170012468A	2017-02-02
KR20170030399A	2017-03-17
KR20180026852A	2018-03-14
KR20130067920A	2013-06-25

Other References:

KIM, KWANG MAN ET AL.: "Charge-discharge Characteristics of Physically Coated Lithium Anodes by Carbon Powders", KOREAN CHEMICAL ENGINEERING RESEARCH, vol. 49, no. 5, 2011, pages 554 - 559, XP055557868
See also references of EP 3537516A4

Attorney, Agent or Firm:

KIM, Sung Ho et al. (KR)

Download PDF:

View/Download PDF PDF Help

Previous Patent: BUBBLE VOLUME CONTROL METHOD AND BUBBLE VOLUME CONTROLLING APPARATUS

Next Patent: METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM