COMPOSITE PARTICLES, NEGATIVE ELECTRODE MIXTURE LAYER AND LITHIUM ION SECONARY BATTERY

WIPO Patent Application WO/2022/250109

A1

One embodiment of the present invention provides composite particles which contain silicon and carbon, while having the following characteristics. If the cross-sectional diameter and the silicon content ratio of each one of the composite particles are measured by means of cross-sectional SEM-EDS of the composite particles, and composite particles having a cross-sectional diameter that is not more than half the number average of the cross-sectional diameters are defined as small-diameter composite particles, the proportion of the number of small-diameter composite particles in the number of measured composite particles is from 5% to 50%, the ratio of the average silicon content ratio (% by mass) of particles other than the small-diameter composite particles to the average silicon content ratio (% by mass) of the small-diameter composite particles is 0.90 or less, and the silicon content ratio of the entire composite particles is 45% by mass or more.

WO/2014/207526	ELECTRODE FOR SECONDARY BATTERY
JP4022718	Non-aqueous electrolyte battery
WO/2015/189053	METHOD FOR PRODUCING ALKALI METAL SULPHIDE NANOPARTICLES, ALKALI METAL SULPHIDE NANOPARTICLES, USE OF THE ALKALI METAL SULPHIDE NANOPARTICLES, AND ALKALI METAL SULPHUR BATTERY

ITO YUJI (JP)
FUJITA MASATO (JP)
TONEGAWA AKIHISA (JP)
KURITA TAKAYUKI (JP)
INOUE HIROFUMI (JP)

PCT/JP2022/021539

December 01, 2022

May 26, 2022

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SHOWA DENKO KK (JP)

H01M4/36; C01B32/05; H01M4/38; H01M4/48; H01M4/587

WO2020128523A1

2020-06-25

JP2009289417A	2009-12-10
JP2015069762A	2015-04-13
JP2018163776A	2018-10-18
JP2018534720A	2018-11-22
CN112582589A	2021-03-30
JP2020537324A	2020-12-17
JP2019522872A	2019-08-15
US10424786B1	2019-09-24

SSINPAT PATENT FIRM (JP)

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