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:
Sep. 22, 2020
Filed:
Sep. 04, 2018
Nanotek Instruments, Inc., Dayton, OH (US);
Hui He, Dayton, OH (US);
Baofei Pan, Dayton, OH (US);
Aruna Zhamu, Springboro, OH (US);
Bor Z. Jang, Centerville, OH (US);
Global Graphene Group, Inc., Dayton, OH (US);
Abstract
Provided is a lithium secondary battery, comprising a cathode, an anode, and a porous separator or electrolyte, wherein the anode comprises: (a) an anode active layer containing a layer of lithium or lithium alloy, in a form of a foil, coating, or multiple particles aggregated together, as an anode active material; (b) a first anode-protecting layer having a thickness from 1 nm to 100 μm, a specific surface area greater than 50 m/g and comprising a thin layer of electron-conducting material selected from graphene sheets, carbon nanotubes, carbon nanofibers, carbon or graphite fibers, expanded graphite flakes, metal nanowires, conductive polymer fibers, or a combination thereof, and (c) a second anode-protecting layer having a thickness from 1 nm to 100 μm and comprising an elastomer having a fully recoverable tensile elastic strain from 2% to 1,000% and a lithium ion conductivity from 10S/cm to 5×10S/cm.