Patents by Inventor Longtao Ma

Longtao Ma 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: 12034154
    Abstract: A novel conversion-type rechargeable zinc (Zn) battery is constructed. A zinc fluoride (Zn/ZnF2) interface provides an artificial solid electrolyte interlayer (SEI) at the Zn/electrolyte interface that allows plating of Zn dendrite free and protects the Zn metal anode from direct exposure to bulk aqueous electrolyte. This provides the advantage that the interfacial Zn2+ ion transport is regulated, which controls nucleation distribution and the growth pattern of Zn deposition on the surface of the anode, and also improve inherent H2O/O2 resistant properties.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: July 9, 2024
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Chunyi Zhi, Longtao Ma
  • Patent number: 11569529
    Abstract: An electrolyte for use in an energy storage device, an energy storage device and a method of forming such electrolyte. The electrolyte includes a polymer matrix of at least two crosslinked structures, including a first polymeric material and a second polymeric material; and an electrolytic solution retained by the polymer matrix; wherein the electrolyte is arranged to physically deform when subjected to an external mechanical load applied to the polymer matrix.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 31, 2023
    Assignee: City University of Hong Kong
    Inventors: Chunyi Zhi, Longtao Ma, Zijie Tang, Hongfei Li
  • Patent number: 11424081
    Abstract: An electrical energy storage apparatus and a method of preparing the same. The electrical energy storage apparatus includes a first energy storage device arranged to supply electrical energy to an external electrical load; a second energy storage device arranged to recharge the first energy storage when at least a portion of the second energy storage device is exposed to air. The second energy storage device includes an encapsulation arranged to selectively block an air exposure to the second energy storage device, so as to maintain the second energy storage device in an idle state.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: August 23, 2022
    Assignee: City University of Hong Kong
    Inventors: Chunyi Zhi, Longtao Ma, Hongfei Li, Zijie Tang
  • Patent number: 11387456
    Abstract: An energy storage device includes a cathode including an active material with a material structure of MXenes, wherein the active material includes at least one electrochemically active component; and a gelatin-based electrolyte containing an aqueous electrolytic solution disposed adjacent to the electrode. The aqueous electrolytic solution is arranged to facilitate a physical and/or a chemical transformation of at least a portion of the active material upon an operation cycle of charging and discharging of the energy storage device.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: July 12, 2022
    Assignee: City University of Hong Kong
    Inventors: Chunyi Zhi, Xinliang Li, Qi Yang, Longtao Ma
  • Publication number: 20220199980
    Abstract: A novel conversion-type rechargeable zinc (Zn) battery is constructed. A zinc fluoride (Zn/ZnF2) interface provides an artificial solid electrolyte interlayer (SEI) at the Zn/electrolyte interface that allows plating of Zn dendrite free and protects the Zn metal anode from direct exposure to bulk aqueous electrolyte. This provides the advantage that the interfacial Zn2+ ion transport is regulated, which controls nucleation distribution and the growth pattern of Zn deposition on the surface of the anode, and also improve inherent H2O/O2 resistant properties.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 23, 2022
    Inventors: Chunyi ZHI, Longtao MA
  • Publication number: 20220069356
    Abstract: A method of fitting a electrolyte-containing solid medium to an electrode, comprising the steps of: providing a solution of at least one type of monomer in onto the electrode; the solution of at least one type of monomer containing an electrolyte; polymerising the monomer to create a polymeric matrix while the solution is on the electrode; wherein the polymeric matrix provide the electrolyte-containing solid medium. Typically, the monomer is 1,3-dioxolane; and the electrolyte is zinc tetrafluoroborate Zn(BF4)2.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 3, 2022
    Inventors: Chunyi ZHI, Longtao MA
  • Patent number: 11152619
    Abstract: An electrode and an energy storage device including the electrode, the electrode including: an active material including a material structure of metal sulfides; a conductive polymer including an ionic liquid disposed on the active material; wherein the combination of the conductive polymer and the ionic liquid is arranged to maintain integrity of the material structure and facilitate ion transportation across the material structure during an operation of charging and discharging cycle of the energy storage device.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 19, 2021
    Assignee: City University of Hong Kong
    Inventors: Chunyi Zhi, Yuwei Zhao, Longtao Ma, Zijie Tang
  • Patent number: 11075380
    Abstract: A system and method for an energy storage device including a first electrode and a second electrode; the second electrode including a cobalt based compound; and an electrolyte disposed between the first electrode and the second electrode.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: July 27, 2021
    Assignee: City University of Hong Kong
    Inventors: Chunyi Zhi, Longtao Ma
  • Publication number: 20210013551
    Abstract: An electrolyte for use in an electrical energy storage device includes: a hydrogel and an electrolytic solution retained by the hydrogel; and a polymeric layer substantially encapsulating the hydrogel and forming at least one crosslinked structure with the hydrogel; wherein the polymeric layer is arranged to prevent water escaping from the hydrogel structure.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 14, 2021
    Inventors: Chunyi Zhi, Funian Mo, Longtao Ma, Zijie Tang
  • Publication number: 20200411862
    Abstract: An electrode and an energy storage device including the electrode, the electrode including: an active material including a material structure of metal sulfides; a conductive polymer including an ionic liquid disposed on the active material; wherein the combination of the conductive polymer and the ionic liquid is arranged to maintain integrity of the material structure and facilitate ion transportation across the material structure during an operation of charging and discharging cycle of the energy storage device.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 31, 2020
    Inventors: Chunyi Zhi, Yuwei Zhao, Longtao Ma, Zijie Tang
  • Publication number: 20200373577
    Abstract: An energy storage device includes a cathode including an active material with a material structure of MXenes, wherein the active material includes at least one electrochemically active component; and a gelatin-based electrolyte containing an aqueous electrolytic solution disposed adjacent to the electrode. The aqueous electrolytic solution is arranged to facilitate a physical and/or a chemical transformation of at least a portion of the active material upon an operation cycle of charging and discharging of the energy storage device.
    Type: Application
    Filed: May 23, 2019
    Publication date: November 26, 2020
    Inventors: Chunyi ZHI, Xinliang Li, Qi Yang, Longtao Ma
  • Publication number: 20200321164
    Abstract: An electrical energy storage apparatus and a method of preparing the same. The electrical energy storage apparatus includes a first energy storage device arranged to supply electrical energy to an external electrical load; a second energy storage device arranged to recharge the first energy storage when at least a portion of the second energy storage device is exposed to air. The second energy storage device includes an encapsulation arranged to selectively block an air exposure to the second energy storage device, so as to maintain the second energy storage device in an idle state.
    Type: Application
    Filed: April 8, 2019
    Publication date: October 8, 2020
    Inventors: Chunyi Zhi, Longtao Ma, Hongfei Li, Zijie Tang
  • Publication number: 20200185770
    Abstract: An electrolyte for use in an energy storage device, an energy storage device and a method of forming such electrolyte. The electrolyte includes a polymer matrix of at least two crosslinked structures, including a first polymeric material and a second polymeric material; and an electrolytic solution retained by the polymer matrix; wherein the electrolyte is arranged to physically deform when subjected to an external mechanical load applied to the polymer matrix.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 11, 2020
    Inventors: Chunyi Zhi, Longtao Ma, Zijie Tang, Hongfei Li
  • Publication number: 20200020945
    Abstract: A system and method for an energy storage device including a first electrode and a second electrode; the second electrode including a cobalt based compound; and an electrolyte disposed between the first electrode and the second electrode.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 16, 2020
    Inventors: Chunyi Zhi, Longtao Ma