NEGATIVE ELECTRODE AND METHOD OF PRODUCING SAME, AND BATTERY

Title:

NEGATIVE ELECTRODE AND METHOD OF PRODUCING SAME, AND BATTERY

Document Type and Number:

WIPO Patent Application WO/2023/189710

Kind Code:

A1

Abstract:

This negative electrode is provided with an active material layer; and an inorganic solid electrolyte layer provided over the active material layer. The active material layer comprises, in the stated order from the side farther from the inorganic solid electrolyte layer, the following: a lithium metal layer; an interlayer containing lithium and oxygen as constituent elements; and a surface layer containing lithium, oxygen and carbon as constituent elements. The inorganic solid electrolyte layer contains a characteristic element other than lithium, oxygen, or carbon as a constituent element. In elemental analysis, using X-ray photoelectron spectroscopy, of the active material layer and the inorganic solid electrolyte layer in the depth direction, the ratio of the abundance of lithium to the abundance of carbon is greater than 2 at any depth within the range from a first intersection where the spectrum derived from the characteristic element and the spectrum derived from carbon intersect one another to a second intersection where the spectrum derived from lithium and the spectrum derived from oxygen intersect one another.

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Inventors:

KUWAJIMA HIDEAKI (JP)
IKEZAWA KEITA (JP)
WATANABE YUKI (JP)
SHIMIZU RYOTA (JP)
HITOSUGI TARO (JP)

Application Number:

PCT/JP2023/010541

Publication Date:

October 05, 2023

Filing Date:

March 17, 2023

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (JP)
TOKYO INST TECH (JP)

International Classes:

H01M4/134; H01M4/1395; H01M4/40; H01M12/08

Domestic Patent References:

WO2011018980A1

2011-02-17

Foreign References:

JP2004220906A	2004-08-05
JP2017204468A	2017-11-16

Attorney, Agent or Firm:

TSUBASA PATENT PROFESSIONAL CORPORATION (JP)

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