Title:
SOLID ELECTROLYTE
Document Type and Number:
WIPO Patent Application WO/2017/061248
Kind Code:
A1
Abstract:
This solid electrolyte has a melilite structure and has a composition represented by La2-yMyX3-zMgzO7+α, wherein M represents an alkaline earth metal element other than Mg, X represents a trivalent metal element, 0 < y < 2, 0 < z < 3, and α represents a value required for maintaining electrical neutrality. A solid electrolyte according to the present invention is a novel solid electrolyte that has a higher conductivity than YSZ at 600°C. It is preferable that X is Ga and/or Al. In addition, it is preferable that y satisfies 1.9 ≤ (2 - y)/y ≤ 4.0. It is also preferable that z satisfies 0 < z ≤ 0.20.
Inventors:
FUJITA SATORU (JP)
UYAMA TAKESHI (JP)
UYAMA TAKESHI (JP)
Application Number:
PCT/JP2016/077362
Publication Date:
April 13, 2017
Filing Date:
September 16, 2016
Export Citation:
Assignee:
TOYOTA CHUO KENKYUSHO KK (JP)
International Classes:
H01B1/08; C01G15/00; C04B35/50; H01B1/06; H01M8/02; H01M8/12
Foreign References:
| JP2015171984A | 2015-10-01 | |||
| JP2005216760A | 2005-08-11 | |||
| JP2000251534A | 2000-09-14 |
Other References:
TEALDI CRISTINA ET AL.: "Layered LaSrGa3O7-Based Oxide-Ion Conductors: Cooperative Transport Mechanisms and Flexible Structures", ADVANCED FUNCTIONAL MATERIALS, vol. 20, no. 22, 27 August 2010 (2010-08-27), pages 3874 - 3880, XP001558808, DOI: doi:10.1002/adfm.201001137
KUANG XIAOJUN ET AL.: "Interstitial oxide ion conductivity in the layered tetrahedral network melilite structure", NATURE MATERIALS, vol. 7, no. 6, 18 May 2008 (2008-05-18), pages 498 - 504, XP055375793
See also references of EP 3309797A4
KUANG XIAOJUN ET AL.: "Interstitial oxide ion conductivity in the layered tetrahedral network melilite structure", NATURE MATERIALS, vol. 7, no. 6, 18 May 2008 (2008-05-18), pages 498 - 504, XP055375793
See also references of EP 3309797A4
Attorney, Agent or Firm:
HATAKEYAMA Fumio (JP)
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