Title:
FIBROUS CARBON MATERIAL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/059036
Kind Code:
A1
Abstract:
This fibrous carbon material is a surface-modified fibrous carbon material used as a conductive aid for an electrode of a non-aqueous electrolyte secondary battery, and is characterized in that the ratio of fluorine atoms to carbon atoms, i.e., the F/C ratio, is at least 0.001 and less than 0.025, and the ratio of oxygen atoms to carbon atoms, i.e., the O/C ratio, is at least 0.05 and less than 0.2 as measured by XPS analysis. Since the element ratios of fluorine and oxygen on the surface of the fibrous carbon material are controlled within the appropriate ranges by a surface modification treatment, the cycle characteristics of a non-aqueous electrolyte secondary battery can be improved compared to the case in which an untreated fibrous carbon material is used.
Inventors:
YAO AKIFUMI (JP)
OOMORI HIROYUKI (JP)
SUZUKI SHOI (JP)
OOMORI HIROYUKI (JP)
SUZUKI SHOI (JP)
Application Number:
PCT/JP2018/033565
Publication Date:
March 28, 2019
Filing Date:
September 11, 2018
Export Citation:
Assignee:
CENTRAL GLASS CO LTD (JP)
International Classes:
H01M4/62; C01B32/15; C01B32/158; C01B32/168; D01F9/127; H01M4/13; H01M4/139
Foreign References:
| JP2015228290A | 2015-12-17 | |||
| JP2005317447A | 2005-11-10 | |||
| JP2002245845A | 2002-08-30 | |||
| JP2005113361A | 2005-04-28 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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