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:
Mar. 04, 2014
Filed:
Apr. 12, 2011
Gholam-abbas Nazri, Bloomfield Hills, MI (US);
David Burton, Waynesville, OH (US);
Maryam Nazri, Bloomfield Hills, MI (US);
Patrick D. Lake, Beavercreek, OH (US);
Andrew Palmer, Piqua, OH (US);
Max L. Lake, Yellow Springs, OH (US);
Gholam-Abbas Nazri, Bloomfield Hills, MI (US);
David Burton, Waynesville, OH (US);
Maryam Nazri, Bloomfield Hills, MI (US);
Patrick D. Lake, Beavercreek, OH (US);
Andrew Palmer, Piqua, OH (US);
Max L. Lake, Yellow Springs, OH (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Methods of making a cathode element for an electrochemical cell. The methods comprise providing hollow carbon nanotubes and a sulfur source in a closed environment. Sulfur is deposited within an interior of the hollow carbon nanotube. The method includes cleaning an exterior surface of the carbon nanotubes and incorporating the carbon nanotubes into a cathode element. A cathodic material for a lithium-sulfur electrochemical cell is also provided. The material comprises a plurality of stacked-cone carbon nanotubes. Each nanotube defines a hollow interior and has a substantially continuous exterior surface area. Elemental sulfur is disposed within the hollow interior of each nanotube.