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    • 10. 发明授权
    • Double current collector cathode design using mixtures of two active materials for alkali metal or ion electrochemical cells
    • 双集电极阴极设计使用两种活性材料的混合物用于碱金属或离子电化学电池
    • US06692865B2
    • 2004-02-17
    • US10008823
    • 2001-10-24
    • Hong GanEsther S. Takeuchi
    • Hong GanEsther S. Takeuchi
    • H01M400
    • H01M4/13A61N1/378H01M4/06H01M4/08H01M4/34H01M4/366H01M4/48H01M4/581H01M4/582H01M4/5825H01M4/5835H01M4/661H01M4/667H01M6/16H01M6/5055H01M2004/028H01M2300/0037
    • A new sandwich cathode design is provided having a first cathode structure of a first cathode active material of a relatively low energy density but of a relatively high rate capability, for example SVO, mixed with a second cathode active material having a relatively high energy density but a relatively low rate capability, for example CFx, with the percentage of SVO being less than that of CFx and sandwiched between two current collectors. Then, a second cathode mixture of SVO and CFx active materials is contacted to the outside of the current collectors. However, the percentage of SVO to CFx is greater in the second structure than in the first. Such an exemplary cathode design might look like: (100−y)% SVO+y% CFx, wherein 0≦y≦100/current collector/(100−x)% SVO+x% CFx, wherein 0≦x≦100/current collector/(100−y)% SVO+y% CFx, wherein 0≦y≦100, and wherein the ratio of x to y is selected from the group consisting of y
    • 提供了一种新的夹层阴极设计,其具有第一阴极结构的第一阴极活性材料,该第一阴极活性材料具有相对低的能量密度但具有相对较高速率的能力,例如SVO,与具有较高能量密度的第二阴极活性材料混合,但是 相对较低的速率能力,例如CFx,SVO的百分比小于CFx的百分比,夹在两个集电器之间。 然后,SVO和CF x活性物质的第二阴极混合物与集电体的外部接触。 然而,在第二个结构中,SVO对CFx的比例大于第一个结构。 这种示例性阴极设计可能看起来像:(100-y)%SVO + y%CFx,其中0 <= y <= 100 /集电器/(100-x)%SVO + x%CFx,其中0 <= x <= 100 /集电体/(100-y)%SVO + y%CFx,其中0 <= y <= 100,并且其中x与y的比率选自y