Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/003904
Kind Code:
A1
Abstract:
Provided is a novel high voltage, high capacity positive electrode active material for a sodium-ion secondary battery. The positive electrode active material for a sodium-ion secondary battery is characterized by comprising a crystal represented by the general formula Nax(Co1-aMa)yP2Oz (wherein, M is at least one type of transition metal element selected from a group consisting of Fe, Cr, Ni and Mn, x satisfies 0.6≤x≤4, y satisfies 0.3≤y≤2.7, and 0≤a≤0.9 and 6≤z<7.5 hold true).
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Inventors:
YAMAUCHI HIDEO (JP)
Application Number:
PCT/JP2018/022450
Publication Date:
January 03, 2019
Filing Date:
June 12, 2018
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
H01M4/58; C01B25/45; H01M4/136; H01M4/62; H01M10/054
Domestic Patent References:
| WO2013035572A1 | 2013-03-14 | |||
| WO2016084573A1 | 2016-06-02 |
Foreign References:
| JP2006523930A | 2006-10-19 |
Other References:
KIM,H.J ET AL.: "Defect-controlled formation of triclinic Na2CoP2O7 for 4 V Sodium‐Ion Batteries", ANGEWANDTE CHEMIE INT. ED., vol. 55, no. 23, 21 April 2016 (2016-04-21), pages 6662 - 6666, XP055671785, DOI: 10.1002/anie.201601022
XINGHAO LIN, YOUZHONG DONG, QUAN KUANG…: "Synthesis, structural, and electrochemical properties of NaCo(PO3)3 cathode for sodium-ion batteries", JOURNAL OF SOLID STATE ELECTROCHEMISTRY, vol. 20, no. 5, May 2016 (2016-05-01), pages 1241 - 1250, XP035890840, DOI: 10.1007/s10008-015-3114-2
PRABEER BARPANDA, JIECHEN LU, TIAN YE, MASATAKA KAJIYAMA, SAI-CHEONG CHUNG, NAOKI YABUUCHI, SHINICHI KOMABA, AND ATSUO YAMADA: "A layer-structured Na2CoP2O7 pyrophosphate cathode for sodium-ion batteries", 2013, XP055671799, Retrieved from the Internet [retrieved on 20180821]
XINGHAO LIN, YOUZHONG DONG, QUAN KUANG…: "Synthesis, structural, and electrochemical properties of NaCo(PO3)3 cathode for sodium-ion batteries", JOURNAL OF SOLID STATE ELECTROCHEMISTRY, vol. 20, no. 5, May 2016 (2016-05-01), pages 1241 - 1250, XP035890840, DOI: 10.1007/s10008-015-3114-2
PRABEER BARPANDA, JIECHEN LU, TIAN YE, MASATAKA KAJIYAMA, SAI-CHEONG CHUNG, NAOKI YABUUCHI, SHINICHI KOMABA, AND ATSUO YAMADA: "A layer-structured Na2CoP2O7 pyrophosphate cathode for sodium-ion batteries", 2013, XP055671799, Retrieved from the Internet
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