The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2024
Filed:
May. 28, 2021
Group14 Technologies, Inc., Woodinville, WA (US);
Group14 Technologies, Inc., Woodinville, WA (US);
Abstract
A negative electrode material for a lithium-ion secondary battery containing a composite (C) that contains a porous carbon (A) and a Si-containing compound (B). The porous carbon (A) satisfies V/V>0.80 and V/V<0.10. When a total pore volume at the maximum value of a relative pressure P/Pis defined as Vand Pis a saturated vapor pressure, a cumulative pore volume at a relative pressure P/P=0.1 is defined as V, and a cumulative pore volume at a relative pressure P/P=10is defined as Vin a nitrogen adsorption test. Further, the porous carbon (A) has a BET specific surface area of 800 m/g or more, and the Si-containing compound (B) is contained in pores of the porous carbon (A). Also disclosed is a negative electrode sheet including the negative electrode material and a lithium-ion secondary battery including the negative electrode sheet.