Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/048051
Kind Code:
A1
Abstract:
The present invention provides: a negative electrode active material that yields a secondary battery with high initial coulomb efficiency, which is one important property of a secondary battery; and a secondary battery that includes the negative electrode active material and has high initial efficiency. The negative electrode active material contains Si nanoparticles and/or silicon oxide particles, and a carbonaceous phase. The Si nanoparticles and/or the silicon oxide particles are embedded in the carbonaceous phase, and the interplanar spacing of a carbon 002 plane in the carbonaceous phase as determined using XRD measurement is 0.340 to 0.38 nm.
Inventors:
BABA TAKANORI (JP)
ARAI TATSUHIKO (JP)
TAKEHISA TORU (JP)
KAWASE KENICHI (JP)
ARAI TATSUHIKO (JP)
TAKEHISA TORU (JP)
KAWASE KENICHI (JP)
Application Number:
PCT/JP2023/024118
Publication Date:
March 07, 2024
Filing Date:
June 29, 2023
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
H01M4/38; H01M4/36; H01M4/48
Domestic Patent References:
| WO2019131864A1 | 2019-07-04 |
Foreign References:
| JP2019125435A | 2019-07-25 | |||
| JP2021527917A | 2021-10-14 | |||
| JP2019067579A | 2019-04-25 |
Attorney, Agent or Firm:
ONO Takayuki (JP)
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