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    • 5. 发明申请
    • DESIGN AND FABRICATION OF ELECTRODES WITH GRADIENTS
    • 具有梯度的电极的设计和制造
    • US20120328942A1
    • 2012-12-27
    • US13582778
    • 2011-03-07
    • Karen E. Thomas-AlyeaRichard K. HolmanGilbert N. Riley, JR.Susan J. Babinec
    • Karen E. Thomas-AlyeaRichard K. HolmanGilbert N. Riley, JR.Susan J. Babinec
    • H01M4/64
    • H01M4/587H01M2004/021
    • An electrode has a front face furthest from the current collector and a back face closest to the current collector and Is disposed on the current collector, and the electrode has a primary gradient of one of a chemical, physical and performance properties of the electroactive particle composition between the front and back faces, with the proviso that the primary gradient is not a bulk porosity gradient. In some embodiments, the electrode further comprises one or more secondary gradients Imposed over the primary gradient. The secondary gradient is one or more gradients selected from the group consisting of particle size gradient, particle size distribution gradient, particle morphology gradient, particle internal porosity, bulk porosity, particle volumetric charge-transfer resistance gradient, particle specific surface area gradient, particle crystalline structure gradient, particle crystallite size gradient, particle chemical composition gradient, particle robustness to cycling gradient, binder gradient, conductive additive gradient, and combinations thereof.
    • 电极具有与集电体最远的前面和最靠近集电体的背面,并且设置在集电体上,并且电极具有电活性颗粒组合物的化学,物理和性能之一的一级梯度 在前面和后面之间,条件是主梯度不是体积孔隙度梯度。 在一些实施例中,电极还包括暴露于主梯度上的一个或多个次级梯度。 次级梯度是选自粒度梯度,粒度分布梯度,颗粒形态梯度,颗粒内部孔隙率,体积孔隙率,颗粒体积电荷转移阻力梯度,颗粒比表面积梯度,颗粒结晶度的一个或多个梯度 结构梯度,颗粒微晶尺寸梯度,颗粒化学组成梯度,颗粒对循环梯度的鲁棒性,粘合剂梯度,导电添加剂梯度及其组合。