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Title:
LITHIUM SECONDARY BATTERY AND CONDUCTIVE ASSISTANT USED IN SAME
Document Type and Number:
WIPO Patent Application WO/2015/108056
Kind Code:
A1
Abstract:
Provided is a lithium secondary battery which comprises a hydrofluoric acid-containing electrolyte solution, an electrode and a conductive assistant, and wherein (1) the conductive assistant contains a substance that is poorly soluble in the hydrofluoric acid-containing electrolyte solution, and the substance is composed of one or more compounds selected from the group consisting of transition metal compounds, and (2) the conductive assistant contains a substance that is soluble in the hydrofluoric acid-containing electrolyte solution, and the total mass of metals in the substance is from 0% by mass to 0.003% by mass (inclusive) relative to the total mass of the electrode. Also provided is a conductive assistant which contains a substance that is poorly soluble in a hydrofluoric acid-containing electrolyte solution and a substance that consumes hydrofluoric acid, and does not substantially contain a substance that is soluble in the hydrofluoric acid-containing electrolyte solution or contains a substance that is soluble in the hydrofluoric acid-containing electrolyte solution in an amount of 1% by mass or less relative to the whole mass.

Inventors:
YAMAMOTO RYUJI (JP)
INOSE TSUYOSHI (JP)
Application Number:
PCT/JP2015/050750
Publication Date:
July 23, 2015
Filing Date:
January 14, 2015
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
H01M10/052; H01M4/62; H01M10/0566
Foreign References:
JP2008243414A2008-10-09
JP2004152662A2004-05-27
JP2009295405A2009-12-17
JP2011063458A2011-03-31
JP2010173889A2010-08-12
JP2011034919A2011-02-17
JP2012169217A2012-09-06
JP2010001173A2010-01-07
JP2013243107A2013-12-05
JP2013191458A2013-09-26
JPH06283206A1994-10-07
JPH0860446A1996-03-05
JP2001026410A2001-01-30
EP1061040A12000-12-20
JP2011108522A2011-06-02
US8597835B22013-12-03
Other References:
See also references of EP 3096387A4
MICHIO INAGAKI ET AL., JAPAN SOCIETY FOR THE PROMOTION OF SCIENCE, 117TH COMMITTEE DOCUMENT, 117-121-C-5, 1972
MICHIO INAGAKI, CARBON, vol. 36, 1963, pages 25 - 34
Attorney, Agent or Firm:
OHIE Kunihisa et al. (JP)
Landlord Kunihisa (JP)
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