Patents by Inventor Ruiguo Cao

Ruiguo Cao 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).

  • Electrolyte for high efficiency cycling of sodium metal and rechargeable sodium-based batteries comprising the electrolyte
    Patent number: 10170795
    Abstract: Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ?2.5 M or a solvent-sodium salt mole ratio ?4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE?80% within 10-30 charge-discharge cycles and maintain a CE?80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 1, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ruiguo Cao, Wesley A. Henderson, Kuber Mishra, Wu Xu
  • Solid electrolyte interphase film-suppression additives
    Patent number: 9865900
    Abstract: An energy storage device comprising: (A) an anode comprising graphite; and (B) an electrolyte composition comprising: (i) at least one carbonate solvent; (ii) an additive selected from CsPF6, RbPF6, Sr(PF6)2, Ba(PF6)2, or a mixture thereof; and (iii) a lithium salt.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: January 9, 2018
    Assignee: Battelle Memorial Institute
    Inventors: Wu Xu, Hongfa Xiang, Jiguang Zhang, Ruiguo Cao
  • ELECTROLYTE FOR HIGH EFFICIENCY CYCLING OF SODIUM METAL AND RECHARGEABLE SODIUM-BASED BATTERIES COMPRISING THE ELECTROLYTE
    Publication number: 20160072151
    Abstract: Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ?2.5 M or a solvent-sodium salt mole ratio ?4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE?80% within 10-30 charge-discharge cycles and maintain a CE?80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 10, 2016
    Inventors: Ji-Guang Zhang, Ruiguo Cao, Wesley A. Henderson, Kuber Mishra, Wu Xu
  • SOLID ELECTROLYTE INTERPHASE FILM-SUPPRESSION ADDITIVES
    Publication number: 20150125759
    Abstract: An energy storage device comprising: (A) an anode comprising graphite; and (B) an electrolyte composition comprising: (i) at least one carbonate solvent; (ii) an additive selected from CsPF6, RbPF6, Sr(PF6)2, Ba(PF6)2, or a mixture thereof; and (iii) a lithium salt.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Wu Xu, Hongfa Xiang, Jiguang Zhang, Ruiguo Cao