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    Methods of charging lithium-sulfur batteries
    2.
    发明授权
    Methods of charging lithium-sulfur batteries 有权
    锂硫电池充电方法

    公开(公告)号：US06329789B1

    公开(公告)日：2001-12-11

    申请号：US09469736

    申请日：1999-12-21

    申请人： Alexei B. Gavrilov ,  Yuriy V. Mikhaylik

    发明人： Alexei B. Gavrilov ,  Yuriy V. Mikhaylik

    IPC分类号： H02J700

    CPC分类号： H01M4/5815 ,  H01M4/602 ,  H01M10/05 ,  H01M10/44 ,  H02J7/0075 ,  H02J7/0086

    摘要： Provided is a method for increasing the cycle life of discharged lithium electrochemical cells, wherein the cell comprises (i) an anode comprising lithium; (ii) a cathode comprising an electroactive sulfur-containing material; and (iii) a liquid electrolyte interposed between the anode and cathode; wherein the method comprises the steps of: (a) charging the cell at an initial low rate of less than 0.2 mA/cm2 to a cell voltage in the range of 2.1 to 2.3 V followed by (b) a subsequent high rate of greater than 0.2 mA/cm2 to a cell voltage of at least 2.4 V.

    摘要翻译： 提供一种提高放电锂电化学电池的循环寿命的方法，其中电池包括（i）包含锂的阳极; （ii）包含电活性含硫材料的阴极; 和（iii）置于阳极和阴极之间的液体电解质; 其中所述方法包括以下步骤：（a）以小于0.2mA / cm 2的初始低速率将电池充电至2.1至2.3V范围内的电池电压，随后（b）随后的高速率大于 0.2 mA / cm2至电池电压至少为2.4 V.

    Multifunctional reactive monomers for safety protection of nonaqueous electrochemical cells
    3.
    发明授权
    Multifunctional reactive monomers for safety protection of nonaqueous electrochemical cells 有权
    用于非水电化学电池安全保护的多功能反应性单体

    公开(公告)号：US06482545B1

    公开(公告)日：2002-11-19

    申请号：US09474471

    申请日：1999-12-29

    申请人： Terje A. Skotheim ,  Alexander A. Gorkovenko ,  Alexei B. Gavrilov ,  Igor P. Kovalev

    发明人： Terje A. Skotheim ,  Alexander A. Gorkovenko ,  Alexei B. Gavrilov ,  Igor P. Kovalev

    IPC分类号： H01M462

    CPC分类号： H01M10/4235 ,  H01M2/1653 ,  H01M6/168 ,  H01M6/181 ,  H01M10/052 ,  H01M10/0565 ,  H01M2200/10

    摘要： The present invention pertains to non-aqueous electrolytes which comprise (a) one or more solvents; (b) one or more ionic salts; and, (c) a multifunctional monomer comprising two or more unsaturated aliphatic reactive moieties per molecule, which multifuntional monomer is soluble in said one or more solvents, which multifuctional monomer rapidly polymerizes when said electrolyte is heated to an initiation temperature greater than 100° C., thereby increasing said viscosity and internal resistivity of said electrolyte. When incorporated into a nonaqueous electrolyte, the multifunctional reactive monomer improves the safety of electric current producing cells by rapidly polymerizing at elevated temperatures to increase the viscosity and internal resistivity of the electrolyte. The present invention also pertains to electric current producing cells comprising such non-aqueous electrolytes, methods of making such non-aqueous electrolytes and electric current producing cells, and methods for increasing the safety of an electric current producing cell.

    摘要翻译： 本发明涉及非水电解质，其包含（a）一种或多种溶剂; （b）一种或多种离子盐; 和（c）每分子含有两个或更多个不饱和脂族反应性部分的多官能单体，该多官能单体可溶于所述一种或多种溶剂中，当所述电解质被加热至大于100℃的起始温度时，该多官能单体快速聚合 从而增加所述电解质的粘度和内部电阻率。 当结合到非水电解质中时，多官能反应性单体通过在高温下快速聚合来提高电流产生电池的安全性，以增加电解质的粘度和内部电阻率。 本发明还涉及包含这种非水电解质的电流产生电池，制造这种非水电解质和产生电流的电池的方法，以及用于提高电流产生电池的安全性的方法。