Patents by Inventor Renheng Tang

Renheng Tang 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).

  • AB5-based hydrogen storage alloy, electrode for Ni-MH battery, secondary battery, and preparation method of hydrogen storage alloy
    Patent number: 11929488
    Abstract: The present invention relates to a hydrogen storage alloy, an electrode for a Ni-MH battery, a secondary battery, and a method for preparing the hydrogen storage alloy. The chemical composition of the hydrogen storage alloy is expressed by the general formula La(3.0˜3.2)xCexZrySm(1-(4.11˜4.2)x-y)NizCouMnvAlw, where x, y, z, u, v, w are molar ratios, and 0.14?x?0.17, 0.02?y?0.03, 4.60?z+u+v+w?5.33, 0.10?u?0.20, 0.25?v?0.30, and 0.30?w?0.40. The atomic ratio of the metal lanthanum (La) to the metal cerium (Ce) is fixed at 3.0 to 3.2, which satisfies the requirements of the overcharge performance of the electrode material. A side elements are largely substituted by samarium (Sm) element, that is, the atomic ratio of Sm on the A side is 25.6% to 42%, so as to solve the problem of shortened cycle life caused by the small amount of cobalt (Co) atoms.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 12, 2024
    Assignees: South China University of Technology, Sihui Dabowen Industrial Co., Ltd., Guangdong Research Institute of Rare-Metal
    Inventors: Liuzhang Ouyang, Cheng Tan, Min Zhu, De Min, Hui Wang, Tongzhao Luo, Fangming Xiao, Renheng Tang
  • AB5-BASED HYDROGEN STORAGE ALLOY, ELECTRODE FOR Ni-MH BATTERY, SECONDARY BATTERY, AND PREPARATION METHOD OF HYDROGEN STORAGE ALLOY
    Publication number: 20220006070
    Abstract: The present invention relates to a hydrogen storage alloy, an electrode for a Ni-MH battery, a secondary battery, and a method for preparing the hydrogen storage alloy. The chemical composition of the hydrogen storage alloy is expressed by the general formula La(3.0˜3.2)xCexZrySm(1?(4.11˜4.2)x?y)NizCouMnvAlw, where x, y, z, u, v, w are molar ratios, and 0.14?x?0.17, 0.02?y?0.03, 4.60?z+u+v+w?5.33, 0.10?u?0.20, 0.25?v?0.30, and 0.30?w?0.40. The atomic ratio of the metal lanthanum (La) to the metal cerium (Ce) is fixed at 3.0 to 3.2, which satisfies the requirements of the overcharge performance of the electrode material. A side elements are largely substituted by samarium (Sin) element, that is, the atomic ratio of Sin on the A side is 25.6% to 42%, so as to solve the problem of shortened cycle life caused by the small amount of cobalt (Co) atoms.
    Type: Application
    Filed: May 28, 2019
    Publication date: January 6, 2022
    Inventors: Liuzhang Ouyang, Cheng Tan, Min Zhu, De Min, Hui Wang, Tongzhao Luo, Fangming Xiao, Renheng Tang