Patents Assigned to SES Holdings Pte. Ltd.
  • Patent number: 10840553
    Abstract: Free-solvent-free lithium sulfonimide salt compositions that are liquid at room temperature, and methods of making free-solvent-free liquid lithium sulfonimide salt compositions. In an embodiment, the methods include mixing one or more lithium sulfonimide salts with one or more ether-based solvents and then removing the free solvent(s) under suitable vacuum, temperature, and time conditions so as to obtain a free-solvent-free liquid lithium sulfonimide salt composition that is liquid at room temperature. In an embodiment, the only solvent molecules that remain in the liquid lithium sulfonimide salt composition are adducted with lithium sulfonimide salt molecules. An example automated processing system for making free-solvent-free liquid lithium sulfonimide salts is also disclosed.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: November 17, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Rajendra P. Singh, Shubha Nageswaran, Qichao Hu
  • Publication number: 20200328475
    Abstract: Localized high-salt-concentration electrolytes each containing a salt, a glyme as a solvent, and a fluorinated diluent. In some embodiments, the glyme has a chemical formula R1—(O—CH2—CH2)n—O—R2, wherein n=1 to 4 and at least one of R1 and R2 is a hydrocarbon sidechain having at least 2 carbon atoms and wherein the salt is soluble in the glyme. In some embodiments, the fluorinated diluent is selected from the group consisting of a fluorinated glyme and a fluorinated ether. In some embodiments, the salt includes an alkali-metal salt. In some embodiments, the salt includes an alkali-earth-metal salt. The salt may include a perfluorinated sulfonimide salt. Electrochemical devices that include localized high-salt-concentration electrolytes of the present disclosure are also disclosed.
    Type: Application
    Filed: August 30, 2019
    Publication date: October 15, 2020
    Applicant: SES Holdings Pte. Ltd.
    Inventors: Takashi Hakari, Arunkumar Tiruvannamalai, Leran Zou, Mackenzie King, Hong Gan, Qichao Hu
  • Patent number: 10756390
    Abstract: The present invention provides a single-phase or homogeneous solution comprising a high concentration of a salt, in particular a lithium salt, in an organic solvent. Such a high salt content in organic solvent is useful in a variety of applications including, but not limited to, in electrical energy storage devices as well as other devices that can benefit from a low-volatility liquid electrolyte.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: August 25, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Rajendra P. Singh, Jerry Lynn Martin
  • Patent number: 10734664
    Abstract: A method of removing one or more target impurities from crude hydrogen bis(fluorosulfonyl)imide (HFSI) using a crystallization technique. In some embodiments, the method includes contacting the crude HFSI with at least one anhydrous solvent to create a solution. The solution is caused to have a temperature sufficient to cause HFSI in the solution to crystalize while the one or more impurities remain dissolved in the mother liquor of the solution. The crystalized HFSI and the mother liquor containing the one or more impurities are separated to obtained a purified HFSI product. Purified HFSI products are also disclosed, as are systems, such as secondary batteries, incorporating purified HFSI products.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: August 4, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Rajendra P. Singh, Qichao Hu
  • Patent number: 10727545
    Abstract: Aspects of the present disclosure include methods of charging secondary lithium metal batteries that include selectively and intentionally overcharging the battery to activate redox shuttling additives in order to reactivate dead lithium. Aspects of the present disclosure also include control systems for determining when to initiate a lithium reactivation charging process and for determining one or more parameters of a lithium reactivation charging protocol.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: July 28, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Hong Gan, Mackenzie King, Qichao Hu
  • Patent number: 10725112
    Abstract: Aspects of the present disclosure include control systems for controlling secondary lithium metal batteries and for controlling electric devices powered, at least in part, thereby, that enable access to reserve energy stored in the lithium metal battery that is not typically available during normal operation. In some examples, the control systems provide access to the reserve energy in response to an emergency, such as requiring excess energy to power an electric device to a safe location.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: July 28, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: SangOh Jung, Yury Matulevich, Mackenzie King, Qichao Hu
  • Patent number: 10615457
    Abstract: A secondary high energy density lithium ion cell includes a cathode comprising a high voltage cathode active material, a lithium metal anode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte comprises an imide salt with a fluorosulfonyl group and a perchlorate salt, wherein the electrolyte is electrochemically stable at operating voltages greater than 4.2V.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 7, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Jaehee Hwang, Xiaobo Li, Qichao Hu
  • Patent number: 10566659
    Abstract: Binary and ternary eutectic mixtures and corresponding electrolytes are disclosed. In some embodiments, binary eutectic mixtures and electrolytes each include a first salt, X1+Y1?, and a second salt, X2+Y2?, wherein each of X1+ and X2+ is an alkali metal cation and X1+ is different from X2+; and each of Y1? and Y2? is a sulfonimide anion and Y1? is different from Y2?. In ternary eutectic mixtures and electrolytes further include a third salt, X3+Y3?, wherein X3+ is different from each of X1+ and X2+. In some embodiments, the eutectic mixtures and electrolytes have melting points in a range of about 5° C. to about 70° C. Electrochemical devices containing such eutectic-mixture electrolytes are also disclosed.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: February 18, 2020
    Assignee: SES Holdings Pte. Ltd.
    Inventors: Rajendra P. Singh, Shubha Nageswaran, Qichao Hu