Patents by Inventor Gao Liu

Gao Liu 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: 20190013513
    Abstract: A simple solution processing method is developed to achieve uniform and scalable stabilized lithium metal powder coating on Li-ion negative electrode. A solvent and binder system for stabilized lithium metal powder coating is developed, including the selection of solvent, polymer binder and enhancement of polymer concentration. The enhanced binder solution is 1% concentration of polymer binder in xylene, and the polymer binder is chosen as the mixture of poly(styrene-co-butadiene) rubber (SBR) and polystyrene (PS). Long-sustained, uniformly dispersed stabilized lithium metal powder suspension can be achieved with the enhanced binder solution. A uniform stabilized lithium metal powder coating can be achieved with simple doctor blade coating method and the resulting stabilized lithium metal powder coating can firmly glued on the anode surface.
    Type: Application
    Filed: January 4, 2017
    Publication date: January 10, 2019
    Inventors: Gao LIU, Sergey D. LOPATIN, Eric H. LIU, Ajey M. JOSHI, Guo AI, Zhihui WANG, Hui ZHAO, Donghai WANG
  • Patent number: 10170765
    Abstract: A family of carboxylic acid groups containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. Triethyleneoxide side chains provide improved adhesion to materials such as, graphite, silicon, silicon alloy, tin, tin alloy. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 1, 2019
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Vincent S. Battaglia, Sang-Jae Park
  • Publication number: 20180351161
    Abstract: The present invention provides for a composition of matter, polymeric conductive binder, or electrode comprising: Poly[(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)]. The present invention also provides for a Lithium-Sulfur (Li—S) battery comprising a cathode comprising: a cathode comprising a polymeric conductive binder poly[(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)]; a separator; an anode; and, an electrolyte.
    Type: Application
    Filed: August 1, 2018
    Publication date: December 6, 2018
    Applicant: The Regents of the University of California
    Inventors: Gao LIU, Min LING, Changan YANG
  • Publication number: 20180337407
    Abstract: A composite electrode prepared from silicon-graphene material and conductive polymer binder poly (1-pyrenebutyl methacrylate-co-methacrylic acid) for use in lithium-ion batteries.
    Type: Application
    Filed: May 19, 2017
    Publication date: November 22, 2018
    Inventors: Gao LIU, Zhe JIA, Tianyue ZHENG, Hui ZHAO, Ann-Christin GENTSCHEV, Thorsten LANGER, Simon LUX
  • Patent number: 10079387
    Abstract: A Poly(1-pyrenemethyl methacrylate-co-dopamine methacrylamide) PPyDMA polymer binder has been designed and fabricated, and has demonstrated an excellent performance for silicon (Si), graphite and a metal alloy anode materials. The PPyDMA polymer binder demonstrates the great potential of a catechol moiety for use in a lithium-ion battery.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 18, 2018
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Hui Zhao
  • Patent number: 9974865
    Abstract: Antibody drug conjugates (ADC's) that bind to FLT3 protein and variants thereof are described herein. FLT3 exhibits a distinct and limited expression pattern in normal adult tissue(s), and is aberrantly expressed in the cancers listed in Table I. Consequently, the ADC's of the invention provide a therapeutic composition for the treatment of cancer.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: May 22, 2018
    Assignee: AGENSYS, INC.
    Inventors: Christine Lowe, Nandini Rudra-Ganguly, Faisal Hayat Malik, Sung Ju Moon, Josh Snyder, Hector Avina, Cyrus Virata, Linnette Capo, Gao Liu
  • Patent number: 9929432
    Abstract: A re-chargeable battery comprising a non-dendrite forming sodium (Na)/potassium (K) liquid metal alloy anode, a sulfur and polyacrylonitrile (PAN) conductive polymer composite cathode, a polyethyleneoxide (PEO) solid electrolyte, a solid electrolyte interface (SEI) formed on the PEO solid electrolyte; and a cell housing, wherein the anode, cathode, and electrolyte are assembled into the cell housing with the PEO solid electrolyte disposed between the cathode and anode.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 27, 2018
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Dongdong Wang
  • Publication number: 20180076459
    Abstract: A composite electrode prepared from silicon-graphene material and conductive polymer binder poly (1-pyrenemethyl methacrylate-co-methacrylic acid) for use in lithium-ion batteries.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Simon LUX, Ann-Christin GENTSCHEV, Thorsten LANGER, Gao LIU, Hui ZHAO, Zhe JIA
  • Publication number: 20180076458
    Abstract: A composite electrode prepared from porous silicon and conductive polymer binders for use in lithium-ion batteries.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Simon LUX, Ann-Christin GENTSCHEV, Thorsten LANGER, Gao LIU, Yuan WEN
  • Publication number: 20180037657
    Abstract: Antibody drug conjugates (ADC's) that bind to FLT3 protein and variants thereof are described herein. FLT3 exhibits a distinct and limited expression pattern in normal adult tissue(s), and is aberrantly expressed in the cancers listed in Table I. Consequently, the ADC's of the invention provide a therapeutic composition for the treatment of cancer.
    Type: Application
    Filed: March 9, 2016
    Publication date: February 8, 2018
    Applicant: AGENSYS, INC.
    Inventors: Nandini RUDRA-GANGULY, Christine LOWE, Faisal Hayat MALIK, Sung Ju MOON, Josh SNYDER, Hector AVINA, Cyrus VIRATA, Linnette CAPO, Gao LIU
  • Publication number: 20180034041
    Abstract: Embodiments of the present invention disclose a composition of matter comprising a silicon (Si) nanoparticle coated with a conductive polymer. Another embodiment discloses a method for preparing a composition of matter comprising a plurality of silicon (Si) nanoparticles coated with a conductive polymer comprising providing Si nanoparticles, providing a conductive polymer, preparing a Si nanoparticle, conductive polymer, and solvent slurry, spraying the slurry into a liquid medium that is a non-solvent of the conductive polymer, and precipitating the silicon (Si) nanoparticles coated with the conductive polymer. Another embodiment discloses an anode comprising a current collector, and a composition of matter comprising a silicon (Si) nanoparticle coated with a conductive polymer.
    Type: Application
    Filed: July 7, 2017
    Publication date: February 1, 2018
    Applicant: The Regents of the University of California
    Inventor: Gao Liu
  • Publication number: 20170294683
    Abstract: A homologous series of cyclic carbonate or propylene carbonate (PC) analogue solvents with increasing length of linear alkyl substitutes were synthesized and used as co-solvents with PC for graphite based lithium ion half cells. A graphite anode reaches a capacity around 310 mAh/g in PC and its analogue co-solvents with 99.95% Coulombic efficiency. Cyclic carbonate co-solvents with longer alkyl chains are able to prevent exfoliation of graphite when used as co-solvents with PC. The cyclic carbonate co-solvents of PC compete for solvation of Li ion with PC solvent, delaying PC co-intercalation. Reduction products of PC on graphite surfaces via single-electron path form a stable Solid Electrolyte Interphase (SEI), which allows the reversible cycling of graphite.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 12, 2017
    Applicant: The Regents of the University of California
    Inventors: Gao Liu, Hui Zhao, Sang-Jae Park
  • Patent number: 9722252
    Abstract: A family of carboxylic acid groups containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. Triethyleneoxide side chains provide improved adhesion to materials such as, graphite, silicon, silicon alloy, tin, tin alloy. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: August 1, 2017
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Shidi Xun, Vincent S. Battaglia, Honghe Zheng, Mingyan Wu
  • Patent number: 9705127
    Abstract: Embodiments of the present invention disclose a composition of matter comprising a silicon (Si) nanoparticle coated with a conductive polymer. Another embodiment discloses a method for preparing a composition of matter comprising a plurality of silicon (Si) nanoparticles coated with a conductive polymer comprising providing Si nanoparticles, providing a conductive polymer, preparing a Si nanoparticle, conductive polymer, and solvent slurry, spraying the slurry into a liquid medium that is a non-solvent of the conductive polymer, and precipitating the silicon (Si) nanoparticles coated with the conductive polymer. Another embodiment discloses an anode comprising a current collector, and a composition of matter comprising a silicon (Si) nanoparticle coated with a conductive polymer.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: July 11, 2017
    Assignee: The Regents of The University of California
    Inventor: Gao Liu
  • Patent number: 9692086
    Abstract: A homologous series of cyclic carbonate or propylene carbonate (PC) analogue solvents with increasing length of linear alkyl substitutes were synthesized and used as co-solvents with PC for graphite based lithium ion half cells. A graphite anode reaches a capacity around 310 mAh/g in PC and its analogue co-solvents with 99.95% Coulombic efficiency. Cyclic carbonate co-solvents with longer alkyl chains are able to prevent exfoliation of graphite when used as co-solvents with PC. The cyclic carbonate co-solvents of PC compete for solvation of Li ion with PC solvent, delaying PC co-intercalation. Reduction products of PC on graphite surfaces via single-electron path form a stable Solid Electrolyte Interphase (SEI), which allows the reversible cycling of graphite.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: June 27, 2017
    Assignee: The Regents of The University of California
    Inventors: Gao Liu, Hui Zhao, Sang-Jae Park
  • Patent number: 9653734
    Abstract: A family of carboxylic acid group containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: May 16, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Gao Liu, Shidi Xun, Vincent S. Battaglia, Honghe Zheng
  • Publication number: 20160272716
    Abstract: Antibody drug conjugates (ADC's) that bind to FLT3 protein and variants thereof are described herein. FLT3 exhibits a distinct and limited expression pattern in normal adult tissue(s), and is aberrantly expressed in the cancers listed in Table I. Consequently, the ADC's of the invention provide a therapeutic composition for the treatment of cancer.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 22, 2016
    Inventors: Christine Lowe, Nandini Rudra-Ganguly, Faisal Hayat Malik, Sung Ju Moon, Josh Snyder, Hector Avina, Cyrus Virata, Linnette Capo, Gao Liu
  • Patent number: 9444090
    Abstract: An embodiment of the invention combines the superior performance of a polyvinylidene difluoride (PVDF) or polyethyleneoxide (POE) binder, the strong binding force of a styrene-butadiene (SBR) binder, and a source of lithium ions in the form of solid lithium metal powder (SLMP) to form an electrode system that has improved performance as compared to PVDF/SBR binder based electrodes. This invention will provide a new way to achieve improved results at a much reduced cost.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: September 13, 2016
    Assignee: The Regents of the University of California
    Inventors: Gao Liu, Vince Battaglia, Lei Wang
  • Publication number: 20160164073
    Abstract: The invention demonstrates that only 2% functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for ˜500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP®) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from ˜48% to ˜90%. This combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell. We also demonstrate the important connection between porosity and the loading of silicon electrodes. By employing a highly porous silicon electrode, a high areal capacity (3.3 mAh/cm2) is obtained. This method works well to achieve high loading of other high-capacity alloy anodes, the state-of-art graphite anode, as well as a high loading of positive electrodes for LIBs.
    Type: Application
    Filed: June 16, 2015
    Publication date: June 9, 2016
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Gao Liu, Hui Zhao
  • Publication number: 20160013491
    Abstract: A family of carboxylic acid groups containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. Triethyleneoxide side chains provide improved adhesion to materials such as, graphite, silicon, silicon alloy, tin, tin alloy. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 14, 2016
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Gao Liu, Vincent S. Battaglia, Sang-Jae Park