Title:
NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE ELEMENT AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2018/105701
Kind Code:
A1
Abstract:
Provided are: a nonaqueous electrolyte electricity storage element which has high capacity retention rate after charge and discharge cycles at high temperatures around 45°C; and a method for producing this nonaqueous electrolyte electricity storage element. One embodiment of the present invention is a nonaqueous electrolyte electricity storage element which is provided with a positive electrode that comprises a positive electrode mixture containing phosphorus atoms and a lithium transition metal composite oxide containing manganese, and wherein the peak position of P2p in the spectrum of the positive electrode mixture as determined by X-ray photoelectron spectroscopy is at 134.7 eV or less. Another embodiment of the present invention is a method for producing a nonaqueous electrolyte electricity storage element, which comprises the formation of a positive electrode with use of a positive electrode mixture paste that contains lithium transition metal composite oxide containing manganese and an oxo acid of phosphorus.
Inventors:
KIKUCHI AKIFUMI (JP)
KIDO RYOTA (JP)
KIDO RYOTA (JP)
Application Number:
PCT/JP2017/044055
Publication Date:
June 14, 2018
Filing Date:
December 07, 2017
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M4/131; H01M4/1391; H01M4/505; H01M4/62; H01M10/0567
Domestic Patent References:
| WO2015136922A1 | 2015-09-17 |
Foreign References:
| JP2016081738A | 2016-05-16 | |||
| JP2013175325A | 2013-09-05 | |||
| JP2009087885A | 2009-04-23 | |||
| JP2016126976A | 2016-07-11 | |||
| JP2014067700A | 2014-04-17 | |||
| JP2016532253A | 2016-10-13 | |||
| JP2011216485A | 2011-10-27 | |||
| JP2010086690A | 2010-04-15 |
Other References:
See also references of EP 3547408A4
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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