Electrochemical cell with improved high-rate discharge performance

    公开(公告)号:US11552305B2

    公开(公告)日:2023-01-10

    申请号:US16455124

    申请日:2019-06-27

    摘要: An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

    Electrochemical cell with improved high-rate discharge performance

    公开(公告)号:US11552304B2

    公开(公告)日:2023-01-10

    申请号:US16454991

    申请日:2019-06-27

    摘要: An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

    DESODIATED SODIUM TRANSITION METAL OXIDES FOR PRIMARY BATTERIES

    公开(公告)号:US20220166012A1

    公开(公告)日:2022-05-26

    申请号:US17601191

    申请日:2020-04-06

    IPC分类号: H01M4/38 H01M4/525 H01M6/04

    摘要: The invention provides primary batteries that incorporate a desodiated sodium transition metal oxide into the positive electrode (a cathode). Batteries of the invention using a desodiated sodium transition metal oxide in the cathode exhibit discharge voltages, battery capacities, and energy densities higher than a traditional Zn—MnO2 dry cell battery, such as a commercially available AA battery. These batteries are also advantageous over comparable lithium ion batteries due to the high abundance and low cost of sodium precursor materials with similar electrical performance.