ALL-SOLID-STATE SECONDARY BATTERY

Title:

ALL-SOLID-STATE SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2023/188470

Kind Code:

A1

Abstract:

The present invention provides an all-solid-state secondary battery which is characterized by being provided with a sintered body that comprises a positive electrode layer, a negative electrode layer, and a solid electrolyte layer that is interposed between the positive electrode layer and the negative electrode layer. This all-solid-state secondary battery is also characterized in that: the solid electrolyte layer comprises a main phase that is composed of an electrolyte represented by formula (1), and a secondary phase that is composed of a boron-containing compound which contains lithium, boron and oxygen; and at least a part of the secondary phase is in contact with a part of the interface between the negative electrode layer and the solid electrolyte layer.　Formula (1): Li3+xSixP1-xO4 (In formula (1), x satisfies 0 < x < 1.)

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Inventors:

TAKEUCHI KEIKO (JP)
YAMAGUCHI YUUSUKE (JP)
SUZUKI SHOTA (JP)
NAGATOMI AYAKA (JP)

Application Number:

PCT/JP2022/036679

Publication Date:

October 05, 2023

Filing Date:

September 30, 2022

Export Citation:

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Assignee:

TDK CORP (JP)

International Classes:

H01B1/06; H01M10/0585; H01M4/134; H01M4/38; H01M10/052; H01M10/0562

Domestic Patent References:

WO2019181909A1

2019-09-26

Foreign References:

JP2018113203A	2018-07-19
JP2021077592A	2021-05-20
JP2021106147A	2021-07-26
JP2015204215A	2015-11-16

Attorney, Agent or Firm:

OIKAWA Shu et al. (JP)

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