Patents by Inventor Xifei Li

Xifei Li 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).

  • Method for mass production of silicon nanowires and/or nanobelts, and lithium batteries and anodes using the silicon nanowires and/or nanobelts
    Patent number: 9531006
    Abstract: This invention provides a method for mass production of silicon nanowires and/or nanobelts. The invented method is a chemical etching process employing an etchant that preferentially etches and removes other phases from a multiphase silicon alloy, over a silicon phase, and allows harvesting of the residual silicon nanowires and/or nanobelts. The silicon alloy comprises, or is treated so as to comprise, one-dimensional and/or two-dimensional silicon nanostructures in the microstructure of the multi-phase silicon alloy prior to etching. When used as anode for secondary lithium batteries, the silicon nanowires or nanobelts produced by the invented method exhibit high storage capacity.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: December 27, 2016
    Assignee: SPRINGPOWER INTERNATIONAL INCORPORATED
    Inventors: Xueliang Sun, Yuhai Hu, Xifei Li Li, Ruying Li, Quanmin Yang
  • METHOD FOR MASS PRODUCTION OF SILICON NANOWIRES AND/OR NANOBELTS, AND LITHIUM BATTERIES AND ANODES USING THE SILICON NANOWIRES AND/OR NANOBELTS
    Publication number: 20150099173
    Abstract: This invention provides a method for mass production of silicon nanowires and/or nanobelts. The invented method is a chemical etching process employing an etchant that preferentially etches and removes other phases from a multiphase silicon alloy, over a silicon phase, and allows harvesting of the residual silicon nanowires and/or nanobelts. The silicon alloy comprises, or is treated so as to comprise, one-dimensional and/or two-dimensional silicon nanostructures in the microstructure of the multi-phase silicon alloy prior to etching. When used as anode for secondary lithium batteries, the silicon nanowires or nanobelts produced by the invented method exhibit high storage capacity.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 9, 2015
    Inventors: Xueliang SUN, Yuhai HU, Xifei Li LI, Ruying LI, Quanmin YANG
  • Secondary lithium batteries having novel anodes
    Patent number: 8828608
    Abstract: A secondary lithium battery having an anode comprising graphene nanosheets doped with a doping element selected from the group consisting of nitrogen, boron, sulfur, phosphorous and combinations thereof. The secondary lithium battery and the anode provide capacity and other performance without degradation during long term charge and discharge cycling.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: September 9, 2014
    Assignee: Springpower International Inc.
    Inventors: Xueliang Sun, Xifei Li, Dongsheng Geng, Quanmin Yang
  • Secondary Lithium Batteries Having Novel Anodes
    Publication number: 20120177995
    Abstract: A secondary lithium battery having an anode comprising graphene nanosheets doped with a doping element selected from the group consisting of nitrogen, boron, sulfur, phosphorous and combinations thereof. The secondary lithium battery and the anode provide capacity and other performance without degradation during long term charge and discharge cycling.
    Type: Application
    Filed: December 26, 2011
    Publication date: July 12, 2012
    Applicant: SPRINGPOWER INTERNATIONAL, INC.
    Inventors: Xueliang Sun, Xifei Li, Dongsheng Geng, Quanmin Yang