Patents by Inventor Ji-Guang Zhang

Ji-Guang 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).

  • Publication number: 20240405286
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon-and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Publication number: 20240322254
    Abstract: A lithium-ion battery includes an anode current collector, a cathode current collector, an anode disposed on and/or in the anode current collector, a cathode disposed on and/or in the cathode current collector, and an electrolyte ionically coupling the anode and the cathode. The electrolyte includes (1) a lithium salt composition, (2) a co-solvent composition, and (3) a diluent composition. In some embodiments, the lithium salt composition includes lithium bis(fluorosulfonyl) imide (LiFSI), the co-solvent composition includes dimethyl carbonate (DMC) and/or ethyl propionate (EP), and the diluent composition includes 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluropropyl ether (TTE). In some embodiments, the anode includes composite particles including carbon and silicon, wherein the composite particles include pores and at least some of the silicon is nanosized silicon in the pores.
    Type: Application
    Filed: March 18, 2024
    Publication date: September 26, 2024
    Inventors: Naoki NITTA, Gleb Nikolayevich YUSHIN, Xia CAO, Ji-Guang ZHANG
  • Patent number: 12087910
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
    Type: Grant
    Filed: May 31, 2023
    Date of Patent: September 10, 2024
    Assignee: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Patent number: 12024436
    Abstract: A method for etching materials in which organic solvents are added to the etching mixture and combined in a mixing arrangement. When agitated organic materials mix with the etching agent and interact with the underlying material to form a shield around the etched areas that prevents the additional interaction of water with the newly etched areas and enables the etching of silicon oxides (SiOx) but does not oxidize Si. This method leads to milder reactions with less heat generation and avoids the safety hazards associated with conventional etching methods.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: July 2, 2024
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Ran Yi, Ji-Guang Zhang
  • Publication number: 20230378543
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
    Type: Application
    Filed: May 31, 2023
    Publication date: November 23, 2023
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Patent number: 11705580
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: July 18, 2023
    Assignee: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Publication number: 20230187697
    Abstract: Localized superconcentrated electrolytes (LSEs) and electrochemical devices including the LSEs are disclosed. The LSE includes an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble, wherein the diluent includes a fluorinated orthoformate.
    Type: Application
    Filed: February 2, 2023
    Publication date: June 15, 2023
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Patent number: 11664536
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, or a combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: May 30, 2023
    Assignee: Battelle Memorial Institute
    Inventors: Wu Xu, Ji-Guang Zhang, Hao Jia, Xianhui Zhang, Xia Cao, Sujong Chae, Ran Yi, Qiuyan Li, Won-Jin Kwak, Xiaolin Li
  • Patent number: 11600859
    Abstract: Localized superconcentrated electrolytes (LSEs) and electrochemical devices including the LSEs are disclosed. The LSE includes an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble, wherein the diluent includes a fluorinated orthoformate.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: March 7, 2023
    Assignee: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Publication number: 20220340429
    Abstract: A method for etching materials in which organic solvents are added to the etching mixture and combined in a mixing arrangement. When agitated organic materials mix with the etching agent and interact with the underlying material to form a shield around the etched areas that prevents the additional interaction of water with the newly etched areas and enables the etching of silicon oxides (SiOx) but does not oxidize Si. This method leads to milder reactions with less heat generation and avoids the safety hazards associated with conventional etching methods.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 27, 2022
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Ran Yi, Ji-Guang Zhang
  • Publication number: 20220115706
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
    Type: Application
    Filed: November 29, 2021
    Publication date: April 14, 2022
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Patent number: 11223036
    Abstract: An anode active material comprises a silicon-carbon secondary particle comprising a composite having an exterior conformal carbon coating and formed of type I primary particles. Each type I primary particle comprises a core particle of interconnected silicon, the interconnected silicon formed of nano-sized silicon particles each connected to at least one other particle, inner pores internal to the core particle and defined by the interconnected silicon, an internal carbon coating on internal wall surfaces of the inner pores and a conformal carbon coating on the core particle.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: January 11, 2022
    Assignee: Apple Inc.
    Inventors: Zuqin Liu, Richard M. Mank, Hyea Kim, Hongli Dai, Sunho Kang, Ji-Guang Zhang, Ran Yi, Qiuyan Li, Xiaolin Li, Wu Xu, Rajankumar L. Patel, Hyung-Seok Lim, Chongmin Wang, Langli Luo, Yang He
  • Patent number: 11127980
    Abstract: Localized superconcentrated electrolytes (LSEs) for use in systems with silicon-based or carbon/silicon composite-based anodes are disclosed. The LSEs include an active salt, a nonaqueous solvent in which the active salt is soluble, and a diluent in which the active salt has a solubility at least 10 times less than solubility of the active salt in the nonaqueous solvent. Systems including the LSEs also are disclosed.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: September 21, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Haiping Jia, Xiaolin Li, Wu Xu
  • Patent number: 11094966
    Abstract: Disclosed herein are embodiments of an electrolyte that is stable and efficient at high voltages. The electrolyte can be used in combination with certain cathodes that exhibit poor activity at such high voltages with other types of electrolytes and can further be used in combination with a variety of anodes. In some embodiments, the electrolyte can be used in battery systems comprising a lithium cobalt oxide cathode and lithium metal anodes, silicon anodes, silicon/graphite composite anodes, graphite anodes, and the like.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 17, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Xiaodi Ren, Wu Xu, Ji-Guang Zhang
  • Publication number: 20210229033
    Abstract: Polyethylenimine coated polymeric beads comprising a polymer that comprises, based on the weight of the polymer, from 25% to 75% by weight of structural units of an acetoacetoxy or acetoacetamide functional monomer, and from 25% to 75% by weight of structural units of a polyvinyl monomer; the polyethylenimine having a number average molecular weight of 300 g/mol or more; the polyethylenimine coated polymeric beads having a specific surface area in the range of from 20 to 400 m2/g; a process of preparing the polyethylenimine coated polymeric beads; a gas filter device comprising the polyethylenimine coated polymeric beads as a filter medium; and a method of removing aldehydes from air containing aldehydes, comprising contacting the air with the polyethylenimine coated polymeric beads.
    Type: Application
    Filed: July 4, 2018
    Publication date: July 29, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Ji Guang Zhang, Jian Zou, Hongyu Chen, Shaoguang Feng, Wenbin Yao, Haiying Li, Xuemei Zhai
  • Publication number: 20210218062
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, or a combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 15, 2021
    Applicant: Battelle Memorial Institute
    Inventors: Wu Xu, Ji-Guang Zhang, Hao Jia, Xianhui Zhang, Xia Cao, Sujong Chae, Ran Yi, Qiuyan Li, Won-Jin Kwak, Xiaolin Li
  • Publication number: 20210122641
    Abstract: Stabilized porous silicon particles are disclosed. The particles include a porous silicon particle comprising a plurality of interconnected silicon nanoparticles and (i) a heterogeneous layer comprising a discontinuous SiC coating that is discontinuous across a portion of pore surfaces and across a portion of an outer surface of the porous silicon particle, and a continuous carbon coating that covers outer surfaces of the discontinuous SiC coating, and remaining portions of the pore surfaces and the outer surface of the porous silicon particle, or (ii) a continuous carbon coating on surfaces of the porous silicon particle, including the outer surface and pore surfaces. Methods of making the stabilized porous silicon particles also are disclosed.
    Type: Application
    Filed: May 20, 2020
    Publication date: April 29, 2021
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ran Yi, Qiuyan Li, Sujong Chae, Xiaolin Li, Yaobin Xu, Chongmin Wang
  • Patent number: 10854923
    Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: December 1, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Wu Xu, Shuru Chen, Ji-Guang Zhang, Xia Cao, Haiping Jia, Bin Liu, Xiaodi Ren
  • Publication number: 20200161635
    Abstract: An anode active material comprises a silicon-carbon secondary particle comprising a composite having an exterior conformal carbon coating and formed of type I primary particles. Each type I primary particle comprises a core particle of interconnected silicon, the interconnected silicon formed of nano-sized silicon particles each connected to at least one other particle, inner pores internal to the core particle and defined by the interconnected silicon, an internal carbon coating on internal wall surfaces of the inner pores and a conformal carbon coating on the core particle.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Inventors: Zuqin Liu, Richard M. Mank, Hyea Kim, Hongli Dai, Sunho Kang, Ji-Guang Zhang, Ran Yi, Qiuyan Li, Xiaolin Li, Wu Xu, Rajankumar L. Patel, Hyung-Seok Lim, Chongmin Wang, Langli Luo, Yang He
  • Publication number: 20200161706
    Abstract: Localized superconcentrated electrolytes (LSEs) and electrochemical devices including the LSEs are disclosed. The LSE includes an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble, wherein the diluent includes a fluorinated orthoformate.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 21, 2020
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu