Patents by Inventor Sujong CHAE

Sujong CHAE 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).

  • STABILIZED POROUS SILICON STRUCTURE FOR HIGHLY STABLE SILICON ANODE AND METHODS OF MAKING
    Publication number: 20250243072
    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 10 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: March 12, 2025
    Publication date: July 31, 2025
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ran Yi, Qiuyan Li, Sujong Chae, Xiaolin Li, Yaobin Xu, Chongmin Wang
  • Stabilized porous silicon structure for highly stable silicon anode and methods of making
    Patent number: 12275641
    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: Grant
    Filed: May 20, 2020
    Date of Patent: April 15, 2025
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ran Yi, Qiuyan Li, Sujong Chae, Xiaolin Li, Yaobin Xu, Chongmin Wang
  • Electrolytes for lithium batteries with carbon and/or silicon anodes
    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
  • Negative active material for lithium secondary battery, manufacturing method thereof and lithium secondary battery including the same
    Patent number: 11335901
    Abstract: Provided are a negative active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, and the present invention may provide a negative active material for a lithium secondary battery including a secondary particle in which a plurality of silicon nanoparticles are aggregated; and a plurality of metal particles distributed in pores in the secondary particle, a manufacturing method thereof, and a lithium secondary battery including the same.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: May 17, 2022
    Assignee: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jaephil Cho, Min-Seong Ko, Sujong Chae
  • Electrolytes for Lithium Batteries with Carbon and/or Silicon Anodes
    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
  • STABILIZED POROUS SILICON STRUCTURE FOR HIGHLY STABLE SILICON ANODE AND METHODS OF MAKING
    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
  • NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20170194638
    Abstract: Provided are a negative active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, and the present invention may provide a negative active material for a lithium secondary battery including a secondary particle in which a plurality of silicon nanoparticles are aggregated; and a plurality of metal particles distributed in pores in the secondary particle, a manufacturing method thereof, and a lithium secondary battery including the same
    Type: Application
    Filed: June 9, 2015
    Publication date: July 6, 2017
    Inventors: Jaephil CHO, Min-Seong KO, Sujong CHAE