Patents by Inventor Tien-Yu YI

Tien-Yu YI 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).

  • METHOD FOR PRELITHIATING SOFT CARBON NEGATIVE ELECTRODE AND ASYMMETRIC LITHIUM-ION SUPERCAPACITOR
    Publication number: 20240170230
    Abstract: A method for prelithiating a soft carbon negative electrode includes the steps of: disposing the soft carbon negative electrode and a lithium metal piece spaced apart from each other with a lithium-containing electrolyte present therebetween; prelithiating the soft carbon negative electrode at a first constant C-rate until a voltage thereof is reduced to a first predetermined voltage not greater than 0.3 V vs. Li/Li+, the first constant C-rate being not greater than 5 C; prelithiating the soft carbon negative electrode at a second constant C-rate until the voltage thereof is reduced to a second predetermined voltage lower than the first predetermined voltage, the second constant C-rate being not greater than 0.2 C and being less than the first constant C-rate; and prelithiating the soft carbon negative electrode at a prelithiation constant voltage which is not greater than the second predetermined voltage, thereby completing prelithiation of the soft carbon negative electrode.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 23, 2024
    Inventors: Yan-Shi CHEN, Guo-Hsu LU, Chi-Chang HU, Chih-Yu KU, Tien-Yu YI
  • Hard carbon beads, their preparation, and energy storage device comprising the same
    Patent number: 11855274
    Abstract: Provided are hard carbon beads, their preparation method, and an energy storage device comprising the same. Microwave heating is used to synthesize cross-linked phenolic formaldehyde for reducing energy consumption and controlling the crosslinking density of cured phenolic formaldehyde. The problems caused by high temperature heating and hydrothermal process for curing resin can be solved by the instant disclosure, which can increase the economic values of electrode and energy storage device comprising the hard carbon beads.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: December 26, 2023
    Assignees: NATIONAL TSING HUA UNIVERSITY, CHANG CHUN PETROCHEMICAL CO., LTD., CHANG CHUN PLASTICS CO., LTD., DAIREN CHEMICAL CORP.
    Inventors: Chi-Chang Hu, Chen-Wei Tai, Tien-Yu Yi, An-Pang Tu, Ping-Chieh Wang
  • HARD CARBON BEADS, THEIR PREPARATION, AND ENERGY STORAGE DEVICE COMPRISING THE SAME
    Publication number: 20230094647
    Abstract: Provided are hard carbon beads, their preparation method, and an energy storage device comprising the same. Microwave heating is used to synthesize cross-linked phenolic formaldehyde for reducing energy consumption and controlling the crosslinking density of cured phenolic formaldehyde. The problems caused by high temperature heating and hydrothermal process for curing resin can be solved by the instant disclosure, which can increase the economic values of electrode and energy storage device comprising the hard carbon beads.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 30, 2023
    Inventors: Chi-Chang HU, Chen-Wei TAI, Tien-Yu YI, An-Pang TU, Ping-Chieh WANG