Patents by Inventor Shiguang Qian

Shiguang Qian 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: 20240194871
    Abstract: Provided is a lithium iron phosphate battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode comprises a positive electrode material layer with a compacted density of 2.3-2.8 g/cc, and the positive electrode material layer comprises a positive electrode active material, the positive electrode active material comprises LiFePO4; the non-aqueous electrolyte comprises a solvent, an electrolyte salt, vinylene carbonate and a compound represented by Structural formula 1; an addition amount of the compound represented by Structural formula 1 is 0.01-5% based on a total mass of the non-aqueous electrolyte being 100%.
    Type: Application
    Filed: March 29, 2022
    Publication date: June 13, 2024
    Inventors: Yunxian Qian, Shiguang Hu, Xiaoxia Xiang, Hongmei Li, Chaowei Cao, Yonghong Deng
  • Publication number: 20240178368
    Abstract: The present application provides a secondary battery, including a positive electrode, a negative electrode with a negative electrode material layer, and a non-aqueous electrolyte, the negative electrode material layer comprises a negative electrode active material, and the negative electrode active material comprises a silicon-based material; the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, the additives comprises a compound represented by structural formula 1; wherein n is 0 or 1, A is selected from C or O, X is selected from R1 and R2 are each independently selected from H, R1 and R2 are not selected from H at the same time, and X, R1 and R2 comprise at least one sulfur atom; the secondary battery meets the following requirements: 0 . 2 ? 1 ? m * n * r S ? 40 ; and 40%?m?90%, 0.05%?n?2%, 1.2 g/cm3?r?1.8 g/cm3, 5%?S?30%.
    Type: Application
    Filed: November 16, 2022
    Publication date: May 30, 2024
    Inventors: Yonghong Deng, Yunxian Qian, Shiguang Hu, Guiyan Sun, Xiaoxia Xiang, Xionggui Lin, Chaowei Cao
  • Publication number: 20240136577
    Abstract: In order to solve the problem that the existing manganese-based positive electrode material battery has insufficient high-temperature cycle and high-temperature storage performances due to the dissolution of manganese ions, the present application provides a secondary battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, the positive electrode comprises a positive electrode material layer containing a positive electrode active material, the positive electrode active material comprises a manganese-based material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, and the additive comprises a compound represented by structural formula 1: the secondary battery meets the following requirements: 0.05?100×W×u/(q×s)?5; and 2.0 g/Ah?W?4.5 g/Ah, 0.05%?u?3.5%, 5%?q?65%, 10 mg/cm2?s?30 mg/cm2.
    Type: Application
    Filed: November 16, 2022
    Publication date: April 25, 2024
    Inventors: Yonghong Deng, Yunxian Qian, Shiguang Hu, Xionggui Lin, Hongmei Li
  • Publication number: 20240097187
    Abstract: The existing positive electrode material that is doped or coated with compound has the problem OF ion dissolution and battery performance deterioration at high temperature. To solve it, the invention provides a lithium-ion battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode comprises a positive electrode material layer, the positive electrode material layer comprises a positive electrode active material, and the positive electrode active material comprises LiMO2, where M is selected from one or more of Ni, Co and Mn, and the positive electrode active material is doped with a compound containing metal element A and/or coated with a compound containing metal element A, the non-aqueous electrolyte comprises a solvent, an electrolyte salt and a compound represented by Structural formula 1. The lithium-ion battery provided by the invention could effectively improve the overall stability of the material.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 21, 2024
    Inventors: Yunxian Qian, Shiguang Hu, Guiyan Sun, Xionggui Lin, Yonghong Deng
  • Publication number: 20240079652
    Abstract: In order to overcome the problems in existing lithium ion batteries having high compactness and high-specific-surface-area negative electrodes of serious side reactions of electrolytes and high gas production, the present invention provides a lithium ion battery, comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a negative electrode material layer, the compaction density of the negative electrode material layer is greater than or equal to 1.4 g/cm3, and the negative electrode material layer comprises a negative electrode active material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt, a vinylene carbonate, a fluoroethylene carbonate, and an unsaturated phosphate represented by structural formula 1, and the electrolyte salt comprises LiPF6 and LiFSI. The lithium ion battery provided by the present invention has good cycle performance, high and low temperature storage performance, and lithium precipitation resistance.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 7, 2024
    Inventors: Yunxian Qian, Shiguang Hu, Fangzheng Liu, Yonghong Deng
  • Patent number: 8048411
    Abstract: A method of inhibiting graft rejection includes isolating Hepatic Stellate Cells from a mammal liver, activating the isolated Hepatic Stellate Cells, and administering a combination of Hepatic Stellate cells and a graft to a mammal.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: November 1, 2011
    Assignee: The Cleveland Clinic Foundation
    Inventors: Shiguang Qian, Lina Lu
  • Publication number: 20080145342
    Abstract: A method of inhibiting graft rejection includes isolating Hepatic Stellate Cells from a mammal liver, activating the isolated Hepatic Stellate Cells, and administering a combination of Hepatic Stellate cells and a graft to a mammal.
    Type: Application
    Filed: August 17, 2007
    Publication date: June 19, 2008
    Inventors: Shiguang Qian, Lina Lu
  • Publication number: 20040043483
    Abstract: The present invention relates to tolerogenic dendritic cells (DCs) and methods for enriching for these cells in tissue preparations and using the cells for preventing or minimizing transplant rejection or for treating or preventing an autoimmune disease.
    Type: Application
    Filed: June 4, 2003
    Publication date: March 4, 2004
    Inventors: Shiguang Qian, Lina Lu, John Fung
  • Patent number: 5918859
    Abstract: A staple remover having pair of slots in the claws of the jaws for complete removal of a staple with one action, avoiding one leg of the staple remaining in the object while the other leg being dislodged. The present device is as simple as the conventional staple remover in construction and manufacture, but the performance is significantly improved.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: July 6, 1999
    Inventor: Shiguang Qian