Title:
NON-AQUEOUS ELECTROLYTE CELL AND CELL PACK
Document Type and Number:
WIPO Patent Application WO/2017/154908
Kind Code:
A1
Abstract:
According to the present embodiment, a non-aqueous electrolyte cell is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode contains an active material and a binder. The active material contained in the negative electrode contains monoclinic crystal titanium dioxide, or Li4+aTi5O12 (where –0.5 ≤ a ≤ 3), and the binder contained by the negative electrode contains a polyvinylidene fluoride having a molecular weight of 400,000 to 1,000,000. The negative electrode satisfies equation (I) below. The non-aqueous electrolyte contains at least one of difluorophosphate or monofluorophosphate. 0.1 ≤ (P2/P1) ≤ 0.4 (I), wherein P1 is the peak intensity that appears within a range of 689 to 685 eV of the spectrum obtained using photoelectron spectroscopy on the surface of the negative electrode, and P2 is the peak intensity that appears within a range of 684 to 680 eV in said spectrum.
Inventors:
HAGIWARA ASUNA (JP)
SARUWATARI HIDESATO (JP)
YAMAMOTO DAI (JP)
SARUWATARI HIDESATO (JP)
YAMAMOTO DAI (JP)
Application Number:
PCT/JP2017/009015
Publication Date:
September 14, 2017
Filing Date:
March 07, 2017
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H01M10/0567; H01M4/13; H01M4/131; H01M4/48; H01M4/485; H01M4/62
Foreign References:
| JP2005100771A | 2005-04-14 | |||
| JP2015187926A | 2015-10-29 | |||
| JP2007214120A | 2007-08-23 | |||
| JP2014029849A | 2014-02-13 | |||
| JP2013058402A | 2013-03-28 | |||
| JP2010231960A | 2010-10-14 |
Other References:
See also references of EP 3429019A4
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
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