Patents by Inventor Zhengcheng Zhang

Zhengcheng Zhang 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: 10461364
    Abstract: A non-aqueous electrolyte for a lithium-ion battery comprises a lithium salt and an additive in an organic solvent. The additive comprises a di-substituted malonate silyl ester compound, in which the hydrogens of the malonate methylene group are replaced by substituents R1 (e.g., alkyl) and X (e.g., halogen). Each of the carboxylic acid groups of the malonate are esterified by a monovalent silyl group such as —Si(R4)3; or the two carboxylic acid groups are esterified by a single divalent silylene group such as —Si(R5)2— to form a ring therewith. Each R4 and R5 independently is alkyl, phenyl, or alkoxy; and each substituted-alkyl comprises an alkyl moiety substituted with one or more group selected from alkenyl, alkynyl, hydroxy, halogen, alkoxy, carboxylic acid, carboxylic ester, carboxylic amide, phenyl, sulfonic acid, and phosphonic acid.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 29, 2019
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Chen Liao, Cameron Peebles, Daniel Abraham, Zhengcheng Zhang
  • Publication number: 20190288340
    Abstract: A non-aqueous solvent composition for a lithium battery comprises a fluorinated solvent mixture that consists essentially of a 1,2-difluoroethylene carbonate and a fluoro-substituted dialkyl carbonate in a respective weight ratio of about 1:3 to about 1:1, and optionally up to about 30 wt % of an additional organic solvent. An electrolyte for a lithium ion battery comprises a lithium salt dissolved in a non-aqueous solvent composition comprising the fluorinated solvent mixture.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 19, 2019
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng ZHANG, Adam P. TORNHEIM, Meinan HE, Jason CROY
  • Publication number: 20190273254
    Abstract: A liquid catholyte for a Li—S battery comprises a non-aqueous solution of at least one lithium polysulfide of formula Li2Sx (wherein x is selected from 4, 6, and 8) and an anion receptor compound capable of complexing with polysulfide anion. The non-aqueous solution typically is composed of the Li2Sx and the anion receptor compound dissolved in a non-aqueous solvent (e.g., one or more organic ether or fluorinated ether solvents). The anion receptor compound typically is present in the catholyte at a concentration of about 0.1 M to about 4 M. Li—S batteries comprise a metallic lithium anode; a porous conductive substrate; a separator membrane between the anode and the porous conductive substrate; and the liquid catholyte composition within pores of the substrate.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 5, 2019
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Zheng Xue, Feng Zhao
  • Patent number: 10374239
    Abstract: The present invention provides an aqueous redox flow battery comprising a negative electrode immersed in an aqueous liquid negative electrolyte, a positive electrode immersed in an aqueous liquid positive electrolyte, and a cation-permeable separator (e.g., a porous membrane, film, sheet, or panel) between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise an electrolyte salt (e.g., a lithium or sodium salt), a redox reactant. The negative redox reactant comprises a pyridinium compound of Formula (I) as described in the specification.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: August 6, 2019
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Jinhua Huang, Kevin Gallagher
  • Publication number: 20190237807
    Abstract: Described herein are fluoro-substituted ethers of Formula (I): wherein R1 is a fluoro-substituted C2-C6 alkyl group; R2 is a C2-C6 alkyl group or a fluoro-substituted C2-C6 alkyl group; each R3 independently is H, F, methyl, or fluoro-substituted methyl; and n is 0, 1, 2, 3, or 4. The fluoro-substituted ether compounds are useful as solvents for lithium containing electrolytes in lithium batteries, particularly lithium-sulfur batteries.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng ZHANG, Chi Cheung SU
  • Patent number: 10347943
    Abstract: Described herein are fluoro-substituted ethers of Formula (I): wherein R1 is a fluoro-substituted C2-C6 alkyl group; R2 is a C2-C6 alkyl group or a fluoro-substituted C2-C6 alkyl group; each R3 independently is H, F, methyl, or fluoro-substituted methyl; and n is 0, 1, 2, 3, or 4. The fluoro-substituted ether compounds are useful as solvents for lithium containing electrolytes in lithium batteries, particularly lithium-sulfur batteries.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: July 9, 2019
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Chi Cheung Su
  • Publication number: 20180375142
    Abstract: The present invention provides an aqueous redox flow battery comprising a negative electrode immersed in an aqueous liquid negative electrolyte, a positive electrode immersed in an aqueous liquid positive electrolyte, and a cation-permeable separator between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise a redox reactant. Redox reactant of the positive electrolyte comprises a compound of Formula (I) as described in the specification.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 27, 2018
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng ZHANG, Chi Cheung SU, Lei CHENG
  • Publication number: 20180337428
    Abstract: An electrolyte for a lithium-ion electrochemical cell comprises a non-aqueous solution of a lithium salt and a redox shuttle compound, wherein the redox shuttle compound comprises —OR groups at carbons 1 and 4 of a benzene ring; a first hydrocarbon ring fused to carbons 2 and 3 of the benzene ring; and a second hydrocarbon ring fused to the carbons 5 and 6 of the benzene ring, wherein either (i) the first and second hydrocarbon rings together with the benzene ring constitute two fused benzobicyclo[2.2.2]octane ring systems sharing a common benzo core group; or (ii) the first and second hydrocarbon rings together with the benzene ring constitute two fused benzobicyclo[2.2.1]heptane ring systems sharing a common benzo core group.
    Type: Application
    Filed: May 17, 2017
    Publication date: November 22, 2018
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Lu ZHANG, Jingjing ZHANG, Ilya A. SHKROB, Zhengcheng ZHANG
  • Publication number: 20180309168
    Abstract: A non-aqueous electrolyte for a lithium-ion battery comprises a lithium salt and an additive in an organic solvent. The additive comprises a di-substituted malonate silyl ester compound, in which the hydrogens of the malonate methylene group are replaced by substituents R1 (e.g., alkyl) and X (e.g., halogen). Each of the carboxylic acid groups of the malonate are esterified by a monovalent silyl group such as —Si(R4)3; or the two carboxylic acid groups are esterified by a single divalent silylene group such as —Si(R5)2— to form a ring therewith. Each R4 and R5 independently is alkyl, phenyl, or alkoxy; and each substituted-alkyl comprises an alkyl moiety substituted with one or more group selected from alkenyl, alkynyl, hydroxy, halogen, alkoxy, carboxylic acid, carboxylic ester, carboxylic amide, phenyl, sulfonic acid, and phosphonic acid.
    Type: Application
    Filed: April 20, 2017
    Publication date: October 25, 2018
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Chen Liao, Cameron Peebles, Daniel Abraham, Zhengcheng Zhang
  • Patent number: 10109886
    Abstract: A lithium-sulfur electrochemical cell includes a cathode including elemental sulfur; an anode including elemental lithium; and an electrolyte including a salt and a non-polar fluorinated ether solvent. Alternatively, a lithium-sulfur electrochemical cell may include an anode; an electrolyte; and a cathode including a polytetrafluoroethylene-coated carbon paper and sulfur.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: October 23, 2018
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Wei Weng, Nasim Azimi
  • Patent number: 10026984
    Abstract: A non-aqueous redox flow battery includes a catholyte including a compound of formula (I) or a compound of formula (II): Where X1 is a moiety of formula I-A or I-B:
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 17, 2018
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Lu Zhang, Jinhua Huang, Zhengcheng Zhang, Anthony K. Burrell
  • Publication number: 20180191012
    Abstract: The present invention provides an aqueous redox flow battery comprising a negative electrode immersed in an aqueous liquid negative electrolyte, a positive electrode immersed in an aqueous liquid positive electrolyte, and a cation-permeable separator (e.g., a porous membrane, film, sheet, or panel) between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise an electrolyte salt (e.g., a lithium or sodium salt), a redox reactant.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 5, 2018
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng ZHANG, Jinhua HUANG, Kevin GALLAGHER
  • Patent number: 9991559
    Abstract: An ionic liquid that is a salt has a Formula: Such ionic liquids may be used in electrolytes and in electrochemical cells.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: June 5, 2018
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Wei Weng, Lu Zhang, Khalil Amine
  • Publication number: 20180076485
    Abstract: Described herein are fluoro-substituted ethers of Formula (I): wherein R1 is a fluoro-substituted C2-C6 alkyl group; R2 is a C2-C6 alkyl group or a fluoro-substituted C2-C6 alkyl group; each R3 independently is H, F, methyl, or fluoro-substituted methyl; and n is 0, 1, 2, 3, or 4. The fluoro-substituted ether compounds are useful as solvents for lithium containing electrolytes in lithium batteries, particularly lithium-sulfur batteries.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 15, 2018
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng ZHANG, Chi Cheung SU
  • Patent number: 9786954
    Abstract: The electrolyte includes one or more salts and a silane. The silane has a silicon linked to one or more first substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety. The silane can be linked to four of the first substituents. Alternately, the silane can be linked to the one or more first substituents and one or more second substituents that each exclude both a poly(alkylene oxide) moiety and a cyclic carbonate moiety.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 10, 2017
    Inventors: Robert C. West, Khalil Amine, Zhengcheng Zhang, Qingzheng Wang, Nicholas A. A. Rossi, Sang Young Yoon, Hiroshi Nakahara
  • Patent number: 9601806
    Abstract: An electro lye includes a compound of Formula I or IA: where each instance of R1 is independently H, alkyl, alkoxy, alkenyl, aryl, heteroaryl, or cycloalkyl; each instance of R2 is independently H, alkyl, alkoxy, alkenyl, aryl, heteroaryl, or cycloalkyl; each instance of R3 is independently H, alkyl, alkenyl, aryl, or cycloalkyl; each instance of R4 is independently H, halogen, CN, NO2, phosphate, alkyl, alkenyl, aryl, heteroaryl, or cycloalkyl; x is 1, 2, 3, 4, or 5; y is 1 or 2; and z is 0, 1, 2, 3, or 4.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 21, 2017
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Lu Zhang, Zhengcheng Zhang, Khalil Amine
  • Patent number: 9601801
    Abstract: An electrolyte includes compounds of formula M1Xn and M2Zm; and a solvent wherein M1 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; M2 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; X is a group forming a covalent bond with M1; Z is a halogen or pseudo-halogen; n is 1, 2, 3, 4, 5, or 6; and m is 1, 2, 3, 4, 5, or 6.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: March 21, 2017
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Chen Liao, Zhengcheng Zhang, Anthony Burrell, John T. Vaughey
  • Patent number: 9598545
    Abstract: A process includes casting a solution including poly(phenylene oxide), inorganic nanoparticles, a solvent, and a non-solvent on a substrate; and removing the solvent to form a porous film; wherein: the porous film is configured for use as a porous separator for a lithium ion battery.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 21, 2017
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Zhengcheng Zhang, Jung-Je Woo, Khalil Amine
  • Publication number: 20170062842
    Abstract: A non-aqueous redox flow battery includes a catholyte including a compound of formula (I): wherein E1 and E2 are independently O, S, S?O, S(?O)2, Se, NR11, or PR11; The compounds of the present technology are capable of undergoing a reversible two-electron transfer process, thus leading to high efficiency of molecular design and an increase in the overall energy density.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: Jinhua Huang, Lu Zhang, Anthony K. Burrell, Zhengcheng Zhang
  • Publication number: 20170062862
    Abstract: A non-aqueous redox flow battery includes a catholyte including a compound of formula (I) or a compound of formula (II): Where X1 is a moiety of formula I-A or I-B:
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: Lu Zhang, Jinhua Huang, Zhengcheng Zhang, Anthony K. Burrell