Title:
SODIUM TITANIUM PHOSPHATE AND USE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/190985
Kind Code:
A1
Abstract:
The present invention provides at least one of: a sodium titanium phosphate; a negative electrode active material that makes it possible to obtain a sodium secondary battery having superior output characteristics compared to conventional aqueous sodium secondary batteries; and a sodium secondary battery provided with the same. Specifically, the present invention provides a negative electrode active material whereby it is possible to obtain an aqueous sodium secondary battery having high output characteristics compared to conventional aqueous sodium secondary batteries provided with NASICON-type NaTi2(PO4)3 as a negative electrode active material. The sodium titanium phosphate is characterized by having a surface layer including Na5Ti(PO4)3 and is represented by the general formula Na1+xTi2(PO4)3 (wherein 0 ≤ x ≤ 2).
Inventors:
KITAJOU AYUKO (JP)
YAMASHITA MAHO (JP)
OKADA MASAKI (JP)
KOBAYASHI WATARU (JP)
TAKAHARA TOSHIYA (JP)
YAMASHITA MAHO (JP)
OKADA MASAKI (JP)
KOBAYASHI WATARU (JP)
TAKAHARA TOSHIYA (JP)
Application Number:
PCT/JP2022/008829
Publication Date:
September 15, 2022
Filing Date:
March 02, 2022
Export Citation:
Assignee:
UNIV YAMAGUCHI (JP)
TOSOH CORP (JP)
TOSOH CORP (JP)
International Classes:
C01B25/45; H01M4/36; H01M4/58; H01M10/054; H01M10/36
Domestic Patent References:
| WO2017026228A1 | 2017-02-16 |
Foreign References:
| CN108091921A | 2018-05-29 | |||
| JP2012054208A | 2012-03-15 | |||
| JP2011241138A | 2011-12-01 | |||
| JP2019175830A | 2019-10-10 | |||
| JP2021039890A | 2021-03-11 |
Other References:
RUBEN-SIMON ET AL., ACS ENERGY LETTERS, vol. 2, 2005
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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