Patents by Inventor Jiagang Xu

Jiagang Xu 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).

  • Publication number: 20210135230
    Abstract: Methods of making a solid-state electrochemical cell that cycles lithium ions are provided that include applying a liquid metal composition comprising gallium to a first major surface of either a solid-state electrolyte or a solid electrode (e.g., lithium metal) in the presence of an oxidant and in an environment substantially free of water to reduce surface tension of the liquid metal composition so that it forms a continuous layer over the first major surface. The first major surface having the continuous layer of liquid metal composition is contacted with a second major surface to form a continuous interfacial layer between the solid-state electrolyte and the solid electrode. Solid-state electrochemical cells formed by such methods are also provided, where the metal composition comprising gallium is a liquid in a temperature range of greater than or equal to about 20° C. to less than or equal to about 30° C.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jiagang XU, Xingcheng XIAO, Robert D. SCHMIDT
  • Publication number: 20210083294
    Abstract: An electrode including an electrode active material and a ceramic hydrofluoric acid (HF) scavenger is provided. The ceramic hydrofluoric acid (HF) scavenger includes M2SiO3, MAlO2, M2O—Al2O3—SiO2, or combinations thereof, where M is lithium (Li), sodium (Na), or combinations thereof. Methods of making the electrode are also provided.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 18, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xingcheng XIAO, Jin LIU, Jiagang XU, Mei CAI, Sherman H. ZENG
  • Publication number: 20210066704
    Abstract: The present disclosure provides methods of compensation for capacity loss resulting from cycle-induced lithium consumption in an electrochemical cell including at least one electrode. Such methods may include adding a lithiation additive to the at least one electrode so as to create a lithium source. The lithium source compensates for cycle-induced lithiation loss such that the electrochemical cell having the lithiation additive experiences total capacity losses of less than or equal to about 5% of an initial capacity prior to cycling of lithium. The lithiation additive includes a lithium silicate represented by the formula LiuHr, where Hr=Liy-uSiOz and where 0?y?3.75 and 0?z?2 and u is a useable portion of y, 0?u?y. The lithium source may include z/4 Li4SiO4 and LimSi, where 0?m?4.4.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 4, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mark W. VERBRUGGE, Xingcheng XIAO, Jiagang XU
  • Publication number: 20200403204
    Abstract: A ceramic-coated separator for a lithium-containing electrochemical cell and methods of preparing the ceramic-coated separator are provided. The ceramic-coated separator may be manufactured by preparing a slurry that includes one or more lithiated oxides and a binder and disposing the slurry onto one or more surfaces of a porous substrate. The slurry may be dried to from a ceramic coating on the one or more surfaces of the porous substrate so as to create the ceramic-coated separator. The ceramic coating may include one or more lithiated oxides selected from Li2SiO3, LiAlO2, Li2TiO3, LiNbO3, Li3PO4, Li2CrO4, and Li2Cr2O7.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 24, 2020
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xingcheng XIAO, Jiagang XU, Mei CAI
  • Publication number: 20180254449
    Abstract: A composite porous separator for an electrochemical cell of a secondary lithium ion battery includes particles of a lithium ion-exchanged zeolite material. The composite porous separator may be manufactured by preparing a slurry comprising a polymeric binder material and the particles of the lithium ion-exchanged zeolite material, and then depositing the slurry on one or more sides of a porous substrate. Thereafter, the slurry may be dried to form a solid microporous active layer on the one or more sides of the substrate.
    Type: Application
    Filed: September 20, 2017
    Publication date: September 6, 2018
    Inventors: Xingcheng Xiao, Jiagang Xu, Sherman H. Zeng, Mei Cai, Mark W. Verbrugge
  • Publication number: 20170098818
    Abstract: Electrostatic dry powder spray processes are disclosed for making battery electrodes. The electrodes made by dry powder coating processes are conventional lithium ion battery electrodes and unconventional electrodes of gradient in composition and structure, large thicknesses, free-standing, and flexible.
    Type: Application
    Filed: October 3, 2016
    Publication date: April 6, 2017
    Inventors: Yang-Tse Cheng, Susan A. Odom, Mohanad N. Al-Shroofy, Kozo Saito, Qinglin Zhang, Jiagang Xu