Titles:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
非水電解質二次電池用負極活物質および非水電解質二次電池
Abstracts:
A negative electrode active material for a non-aqueous electrolyte secondary battery according to one example of an embodiment comprises composite particles (30) that include a lithium aluminate phase (31) and a silicon phase (32) dispersed in the lithium aluminate phase (31). The lithium aluminate phase (31) contains boron, and the ratio (MAI/MB) of the aluminum percentage content (MAI) and the boron percentage content (MB) with respect to the total amount of the elements other than oxygen constituting the lithium aluminate phase (31) and the silicon phase (32) is 1.0-30.0, inclusive.
Title:
Silicon-carbon coated composite anode material and its preparation method and application
Abstract:
The present application provides a preparation method of silicon-carbon coated composite anode material, including the following steps: nanosizing silicon material to obtain nanocrystalline silicon in a protective environment; self-assembling the nanocrystalline silicon with first carbon source and polymer, and then self-assembling with second carbon source to get layered nanocrystalline silicon; granulating the layered nanocrystalline silicon to obtain precursor; sintering the precursor at 800 DEG C ~1200 DEG C to obtain the silicon-carbon coated composite anode material. The present application also provides silicon-carbon coated composite anode material and a battery comprising thereof. The preparation method of the present application is simple, easy to control and suitable for industrial production. The prepared silicon-carbon coated composite anode material can inhibit expansion and has improved conductivity and capacitance.
Applicants:
SOLIDEDGE SOLUTION INC [TW]
HON HAI PREC IND CO LTD [TW]
Inventors:
CHEN MAO-SUNG [TW]
LAI HONG-ZHENG [TW]
CHANG TSENG-LUNG [TW]
Titles:
SECONDARY AND TERTIARY COMPOSITE PARTICLES
SEKUNDÄRE UND TERTIÄRE VERBUNDTEILCHEN
Abstract:
This invention relates to a method for manufacturing secondary composite particles, secondary composite particles, a method for manufacturing tertiary composite particles, the tertiary composite particles, and a secondary electrochemical cell utilising the secondary or tertiary composite particles as the active material of the negative electrode of the secondary electrochemical cell, wherein each tertiary composite particle comprises a plurality of secondary composite particles embedded in a second matrix being predominantly made of carbon, wherein each secondary composite particle comprises a plurality of primary particles embedded in a first matrix, wherein the primary particles are predominantly composed of silicon and wherein the first matrix comprises silicon and carbon.
Applicant:
CENATE AS [NO]
Inventors:
KIRKENGEN MARTIN [NO]
SAUAR ERIK [NO]
FILTVEDT WERNER [NO]
Other family members:
WO 2023161262 A2,
Pub. Date: 2023-08-31,
EPO/ Google
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