Title:
COMPOSITE OXIDE WITH NOVEL CRYSTAL STRUCTURE, AND ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY USING SAID COMPOSITE OXIDE AS SOLID ELECTROLYTE
Document Type and Number:
WIPO Patent Application WO/2022/074959
Kind Code:
A1
Abstract:
Provided is a composite oxide that has high density, high lithium ion conductivity, and low activation energy. The composite oxide has a chemical composition represented by Li4-xSr2-xLaxZrO6 (0 ≤ x ≤ 1.0) and belongs to the space group P21/n in the monoclinic crystal system. The relative density of the composite oxide can be set to 100%. The lithium ion conductivity of the composite oxide can be set to 6.0×10-4S/cm or more. The composite oxide is produced by melting at least part of a starting material having a chemical composition represented by Li(4-x)ySr(2-x)zLaxZrO6 (0 ≤ x ≤ 1.0, 1 < y, 1 < z), forming a molten part, and moving the molten part at a movement speed of 8 mm/h or more.
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Inventors:
KATAOKA KUNIMITSU (JP)
AKIMOTO JUNJI (JP)
WAKAHARA SONOKO (JP)
AKIMOTO JUNJI (JP)
WAKAHARA SONOKO (JP)
Application Number:
PCT/JP2021/031700
Publication Date:
April 14, 2022
Filing Date:
August 30, 2021
Export Citation:
Assignee:
AIST (JP)
International Classes:
C30B29/22; C01G25/00; C30B13/00; H01B1/06; H01B1/08; H01M10/052; H01M10/0562
Domestic Patent References:
| WO2019194290A1 | 2019-10-10 | |||
| WO2016017769A1 | 2016-02-04 | |||
| WO2016068040A1 | 2016-05-06 | |||
| WO2017130622A1 | 2017-08-03 |
Foreign References:
| CN106145931A | 2016-11-23 | |||
| JP2012099287A | 2012-05-24 | |||
| JP2011195373A | 2011-10-06 |
Other References:
M. I. PANTYUKHINA; M. S. SHCHELKANOVA; S. V. PLAKSIN: "Ionic conductivity of LiSrZrO", INORGANIC MATERIALS, NAUKA/INTERPERIODICA, MO, vol. 48, no. 4, 14 March 2012 (2012-03-14), Mo , pages 382 - 385, XP035029488, ISSN: 1608-3172, DOI: 10.1134/S0020168512030119
KATAOKA KUNIMITSU, AKAO TADAYOSHI, NAGATA HIROSHI, NAGAI HIDEAKI, AKIMOTO JUNJI, AKEDO JUN: "Development of a compact all-solid-state lithium secondary battery using single-crystal electrolyte:-Towards realizing oxide-type all-solid-state lithium secondary batteries", SYNTHESIOLOGY, vol. 12, no. 1, 1 January 2019 (2019-01-01), XP055919315, ISSN: 1882-6229, DOI: 10.5571/synth.12.1_28
SOLID STATE COMMUNUCASIONS, vol. 86, 2018, pages 689 - 693
APPLIED MATERIALS AND INTERFACES, vol. 10, 2018, pages 10935 - 10944
KATAOKA KUNIMITSU, AKAO TADAYOSHI, NAGATA HIROSHI, NAGAI HIDEAKI, AKIMOTO JUNJI, AKEDO JUN: "Development of a compact all-solid-state lithium secondary battery using single-crystal electrolyte:-Towards realizing oxide-type all-solid-state lithium secondary batteries", SYNTHESIOLOGY, vol. 12, no. 1, 1 January 2019 (2019-01-01), XP055919315, ISSN: 1882-6229, DOI: 10.5571/synth.12.1_28
SOLID STATE COMMUNUCASIONS, vol. 86, 2018, pages 689 - 693
APPLIED MATERIALS AND INTERFACES, vol. 10, 2018, pages 10935 - 10944
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