Patents by Inventor Qinxiang LI

Qinxiang LI 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).

  • Battery-level Ni—Co—Mn mixed solution and preparation method for battery-level Mn solution
    Patent number: 11695170
    Abstract: Provided are a battery-level Ni—Co—Mn mixed solution and a preparation method for a battery-level Mn solution, the steps thereof comprising: acid dissolution (S1), alkalization to remove impurities (S2), synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), synergistic extraction (S5), and refining extraction (S6). The steps of deep ageing to remove impurities (S4) and synergistic extraction (S5) comprise: performing deep ageing on a filtrate obtained from the step of synchronous precipitation of calcium, magnesium, and lithium (S3), and after performing filtration to remove impurities, obtaining an aged filtrate; using P204 to extract the aged filtrate and obtain a loaded organic phase, and subjecting the loaded organic phase to staged back-extraction to obtain the battery-level Ni—Co—Mn mixed solution and a Mn-containing solution.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: July 4, 2023
    Assignees: JINGMEN GEM CO., LTD, GEM CO., LTD
    Inventors: Kaihua Xu, Zhenkang Jiang, Qinxiang Li, Kun Zhang, Wenjie Wang, Jun Wang, Shihong Wen
  • BATTERY-LEVEL NI-CO-MN MIXED SOLUTION AND PREPARATION METHOD FOR BATTERY-LEVEL MN SOLUTION
    Publication number: 20220384868
    Abstract: Provided are a battery-level Ni—Co—Mn mixed solution and a preparation method for a battery-level Mn solution, the steps thereof comprising: acid dissolution (S1), alkalization to remove impurities (S2), synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), synergistic extraction (S5), and refining extraction (S6). The steps of deep ageing to remove impurities (S4) and synergistic extraction (S5) comprise: performing deep ageing on a filtrate obtained from the step of synchronous precipitation of calcium, magnesium, and lithium (S3), and after performing filtration to remove impurities, obtaining an aged filtrate; using P204 to extract the aged filtrate and obtain a loaded organic phase, and subjecting the loaded organic phase to staged back-extraction to obtain the battery-level Ni—Co—Mn mixed solution and a Mn-containing solution.
    Type: Application
    Filed: December 31, 2019
    Publication date: December 1, 2022
    Inventors: Kaihua XU, Zhenkang JIANG, Qinxiang LI, Kun ZHANG, Wenjie WANG, Jun WANG, Shihong WEN