Patents by Inventor Nallathamby Kalaiselvi

Nallathamby Kalaiselvi 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).

  • Surface modified cathode with improved lithium intercalation behavior
    Patent number: 10224539
    Abstract: Surface modification of LiNi0.4Mn0.4Co0.2O2 (442) compound with certain inert (MxOy) metal oxides viz., Al2O3, Bi2O3, In2O3, Cr2O3, ZrO2, ZnO, MgO has been attempted with a view to improve the structural and cycling stability, especially upon high voltage and high rate cycling conditions. In addition to HF scavenging effect, the protective metal oxide inter-connect layer restricts the number of oxide ion vacancies eliminated during the initial cycling of cathode, resulting in the reduced irreversible capacity loss of the first cycle. Among the surface modified cathodes, Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode exhibits appreciable specific capacity values of 196 (Qdc1) and 175 (Qdc100) mAh g?1 with 89% capacity retention, thus evidencing the superiority of Bi2O3 modifier in improving the electrochemical behavior of pristine LiNi0.4Mn0.4Co0.2O2 cathode. Further, suitability of Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode for high voltage (5.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 5, 2019
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Nallathamby Kalaiselvi, Dharmarajan Bhuvaneswari, Ganguli Babu
  • SURFACE MODIFIED CATHODE WITH IMPROVED LITHIUM INTERCALATION BEHAVIOR
    Publication number: 20160043387
    Abstract: Surface modification of LiNi0.4Mn0.4Co0.2O2(442)compound with certain inert (MxOy) metal oxides viz., Al2O3, Bi2O3, In2O3, Cr2O3, ZrO2, ZnO, MgO has been attempted with a view to improve the structural and cycling stability, especially upon high voltage and high rate cycling conditions. In addition to HF scavenging effect, the protective metal oxide inter-connect layer restricts the number of oxide ion vacancies eliminated during the initial cycling of cathode, resulting in the reduced irreversible capacity loss of the first cycle. Among the surface modified cathodes, Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode exhibits appreciable specific capacity values of 196 (Qdc1) and 175 (Qdc100) mAh g?1 with 89% capacity retention, thus evidencing the superiority of Bi2O3 modifier in improving the electrochemical behavior of pristine LiNi0.4Mn0.4Co0.2O2 cathode. Further, suitability of Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode for high voltage (5.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 11, 2016
    Inventors: Nallathamby Kalaiselvi, Dharmarajan Bhuvaneswari, Ganguli Babu