Patents by Inventor Wenquan Lu

Wenquan Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10714745
    Abstract: Anodes for electrochemical cells and batteries are described herein. In particular, and anode comprises silicon oxide particles on a transition metal current collector (e.g., copper, nickel, copper alloy, and the like), wherein the particles comprise nanocrystalline domains of silicon dispersed within a silicon oxide matrix. The particles do not include a metal oxide coating, and are produced by heating a silicon monoxide powder at a temperature in the range of about 400 to about 1100° C. under an inert atmosphere for about 2 to about 20 hours. In some embodiments, the particles are free from a metal oxide coating and have an average diameter of about 20 to 10000 nm; the nanocrystalline domains of silicon comprise about 10 to about 90 mole percent of the particles; and the nanocrystalline domains have dimensions of about 0.2 to about 50 nm in average diameter.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 14, 2020
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Wenquan Lu, Linghong Zhang
  • Publication number: 20190036116
    Abstract: Anodes for electrochemical cells and batteries are described herein. In particular, and anode comprises silicon oxide particles on a transition metal current collector (e.g., copper, nickel, copper alloy, and the like), wherein the particles comprise nanocrystalline domains of silicon dispersed within a silicon oxide matrix. The particles do not include a metal oxide coating, and are produced by heating a silicon monoxide powder at a temperature in the range of about 400 to about 1100° C. under an inert atmosphere for about 2 to about 20 hours. In some embodiments, the particles are free from a metal oxide coating and have an average diameter of about 20 to 10000 nm; the nanocrystalline domains of silicon comprise about 10 to about 90 mole percent of the particles; and the nanocrystalline domains have dimensions of about 0.2 to about 50 nm in average diameter.
    Type: Application
    Filed: July 28, 2017
    Publication date: January 31, 2019
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Wenquan LU, Linghong ZHANG
  • Publication number: 20180114983
    Abstract: Compounds, powders, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.
    Type: Application
    Filed: March 14, 2017
    Publication date: April 26, 2018
    Inventors: Hongli Dai, Akshaya K. Padhi, Huiming Wu, Dapeng Wang, Christopher S. Johnson, John David Carter, Martin Bettge, Wenquan Lu, Chi-Kai Lin, Victor A. Maroni, Xiaoping Wang
  • Publication number: 20170263928
    Abstract: Compounds, powders, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.
    Type: Application
    Filed: March 14, 2017
    Publication date: September 14, 2017
    Inventors: Hongli Dai, Akshaya K. Padhi, Huiming Wu, Dapeng Wang, Christopher S. Johnson, John David Carter, Martin Bettge, Wenquan Lu, Chi-Kai Lin, Victor A. Maroni, Xiaoping Wang
  • Patent number: 9012096
    Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In certain electrolytes, the alkali metal salt is a bis(chelato)borate and the additives include substituted or unsubstituted linear, branched or cyclic hydrocarbons comprising at least one oxygen atom and at least one aryl, alkenyl or alkynyl group. In other electrolytes, the additives include a substituted aryl compound or a substituted or unsubstituted heteroaryl compound wherein the additive comprises at least one oxygen atom. There are also provided methods of making the electrolytes and batteries employing the electrolytes. The invention also provides for electrode materials.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: April 21, 2015
    Assignee: UChicago Argonne, LLC
    Inventors: Khalil Amine, Jun Liu, Donald R. Vissers, Wenquan Lu
  • Publication number: 20110104551
    Abstract: The present invention provides a composite material suitable for use in an anode for a lithium ion battery, the composite material comprising a layer of a lithium-alloying material on the walls of an aligned nanotubular base material. Preferably, the lithium-alloying material comprises a material selected from the group consisting of Si, Sn, Pb, Al, Au, Pt, Zn, Cd, Ag, Mg, and a combination of two or more of the foregoing.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 5, 2011
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Junbing YANG, Wenquan LU
  • Patent number: 7507503
    Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 24, 2009
    Assignee: U Chicago Argonne LLC
    Inventors: Khalil Amine, Jun Liu, Donald R. Vissers, Wenquan Lu
  • Publication number: 20060147809
    Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In certain electrolytes, the alkali metal salt is a bis(chelato)borate and the additives include substituted or unsubstituted linear, branched or cyclic hydrocarbons comprising at least one oxygen atom and at least one aryl, alkenyl or alkynyl group. In other electrolytes, the additives include a substituted aryl compound or a substituted or unsubstituted heteroaryl compound wherein the additive comprises at least one oxygen atom. There are also provided methods of making the electrolytes and batteries employing the electrolytes. The invention also provides for electrode materials.
    Type: Application
    Filed: January 24, 2006
    Publication date: July 6, 2006
    Inventors: Khalil Amine, Jun Liu, Donald Vissers, Wenquan Lu
  • Publication number: 20060134527
    Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 22, 2006
    Inventors: Khalil Amine, Jun Liu, Donald Vissers, Wenquan Lu
  • Patent number: D883455
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: May 5, 2020
    Inventor: Wenquan Lu