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. 20, 2012
Filed:
Mar. 25, 2010
Michael M. Thackeray, Naperville, IL (US);
Christopher S. Johnson, Naperville, IL (US);
Sun-ho Kang, Naperville, IL (US);
Lynn Trahey, Clarendon Hills, IL (US);
John T. Vaughey, Elmhurst, IL (US);
Michael M. Thackeray, Naperville, IL (US);
Christopher S. Johnson, Naperville, IL (US);
Sun-Ho Kang, Naperville, IL (US);
Lynn Trahey, Clarendon Hills, IL (US);
John T. Vaughey, Elmhurst, IL (US);
UChicago Argonne, LLC, Chicago, IL (US);
Abstract
This invention provides a lithium-oxygen or lithium-air electrochemical cell comprising a negative electrode, an electrolyte, and a porous activated positive electrode comprising lithium-rich electrocatalytic materials suitable for use in lithium-oxygen (air) cells and batteries. The activated positive electrode is produced by activating a precursor electrode formed from a material comprising one or more metal oxide compounds of general formula xLiO.yMO, in which 0<x≦4, 0<y≦1, and 0<z≦3, in which M is typically, but not exclusively, a transition metal, excluding LiMnOas a sole metal oxide compound in the precursor electrode. LiO is extracted from the above-mentioned precursors to activate the electrode either by electrochemical methods or by chemical methods. The invention extends to batteries containing such electrochemical cells.