Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALL-SOLID-STATE LITHIUM ION BATTERIES, ELECTRODE AND ALL-SOLID-STATE LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/202708
Kind Code:
A1
Abstract:
A positive electrode active material for all-solid-state lithium ion batteries, which is composed of particles that contain a crystal of a lithium metal composite oxide, and which is configured such that: the lithium metal composite oxide has a lamellar structure and contains at least Li and a transition metal; the particles satisfy the relational expression (D90 – D10)/D50 ≥ 0.90 with respect to D10, D50 and D90, which are obtained from the volume-based cumulative particle size distribution as determined by laser diffraction particle size distribution measurement; and with respect to the crystal, the ratio of the crystallite size α at the peak within the range of 2θ = 18.7 ± 2° to the crystallite size β at the peak within the range of 2θ = 44.6 ± 2°, namely α/β is 1.0 or more in X-ray diffractometry using a CuKα ray.
Inventors:
KADOWAKI TAKUYA (JP)
KAWAKAMI YOSHITAKA (JP)
KAWAKAMI YOSHITAKA (JP)
Application Number:
PCT/JP2020/001480
Publication Date:
October 08, 2020
Filing Date:
January 17, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01M4/36; H01M4/131; H01M4/505; H01M4/525; H01M4/62; H01M10/052; H01M10/0562; H01M10/0565; H01M10/0585
Domestic Patent References:
| WO2015182665A1 | 2015-12-03 | |||
| WO2016060105A1 | 2016-04-21 | |||
| WO2007004590A1 | 2007-01-11 |
Foreign References:
| JP2014022204A | 2014-02-03 | |||
| JP2016024916A | 2016-02-08 | |||
| JP2010245038A | 2010-10-28 | |||
| JP2009266728A | 2009-11-12 | |||
| JP2015018678A | 2015-01-29 | |||
| CN102544481A | 2012-07-04 | |||
| JP2019066770A | 2019-04-25 | |||
| JP2018014317A | 2018-01-25 | |||
| JP2002201028A | 2002-07-16 |
Other References:
YOSHIO WASEDAEIICHIRO MATSUBARA: "X-ray structural analysis-determining arrangement of atoms", 30 April 2002
See also references of EP 3920275A4
See also references of EP 3920275A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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