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    • 4. 发明申请
    • INTEGRAL BI-LAYER SEPARATOR-ELECTRODE CONSTRUCTION FOR LITHIUM-ION BATTERIES
    • 锂离子电池整体双层分离器电极结构
    • US20120231321A1
    • 2012-09-13
    • US13045563
    • 2011-03-11
    • Xiaosong HuangHamid G. Kia
    • Xiaosong HuangHamid G. Kia
    • H01M2/16H01M4/26
    • H01M2/1673H01M2/145H01M2/1646H01M2/1653H01M2/1686H01M10/0525H01M2220/20H01M2220/30Y02E60/122Y02P70/54Y02T10/7011Y10T29/49108Y10T29/49115
    • A porous bi-layer separator composed of a first layer with a contacting array of non-conducting particles overlaid with a second layer of a microporous polymer layer, may be fabricated on the electrode surface of the anode of a lithium-ion battery to form an integral electrode-separator construction. The bi-layer separator may prevent development of a direct electronic path between the anode and cathode of the battery while accommodating electrolyte solution and enabling passage of lithium ions. Such an integral separator should be mechanically robust and tolerant of elevated temperatures. Exemplary bi-layer separators may be fabricated by sequential deposition of solvent-containing slurries and polymer solutions with subsequent controlled evaporation of solvent. The elevated temperature performance of lithium-ion battery cells incorporating such integral electrode-bi-layer separators was demonstrated to exceed the performance of similar cells using commercial and experimental single layer polymer separators.
    • 可以在锂离子电池的阳极的电极表面上制造由具有覆盖有第二层微孔聚合物层的非导电颗粒的接触阵列的第一层组成的多孔双层隔板,以形成 一体式电极分离器结构。 双层隔板可以防止电池的阳极和阴极之间的直接电子路径的发展,同时容纳电解质溶液并使锂离子通过。 这种整体分离器应该是机械坚固的并且耐受升高的温度。 示例性双层分离器可以通过依次沉积含溶剂的浆料和聚合物溶液并随后控制蒸发溶剂来制造。 结合这样的整体电极 - 双层隔板的锂离子电池的高温性能被证明超过使用商业和实验单层聚合物分离器的类似电池的性能。
    • 5. 发明申请
    • BATTERY SEPARATORS WITH VARIABLE POROSITY
    • 具有可变孔径的电池分离器
    • US20120156568A1
    • 2012-06-21
    • US12974094
    • 2010-12-21
    • Hamid G. KiaXiaosong HuangMark W. Verbrugge
    • Hamid G. KiaXiaosong HuangMark W. Verbrugge
    • H01M2/16H01M2/18
    • H01M2/145H01M2/1653H01M2/18H01M10/0525Y02E60/122Y02P70/54
    • A porous polymer battery separator is provided that includes variable porosity along its length. Such battery separators can increase the uniformity of the current density within electrochemical battery cells that may normally experience higher current density and higher temperatures near their terminal ends than they do near their opposite ends. By disposing a variable porosity separator between the electrodes of an electrochemical cell such that its terminal end has a lower porosity than its opposite end, the transport of ions, such as lithium ions, through the separator can be more restricted in normally high current regions and less restricted in normally low current regions, thereby increasing the overall uniformity of current density within the battery cell. Variable porosity battery separators may be produced by a dry-stretching process or by a wet process. These processes may include forming a polymer-containing film, producing a uniform distribution of pore sites within the film, and reforming the polymer-containing film to a uniform thickness.
    • 提供了一种多孔聚合物电池隔板,其包括沿其长度的可变孔隙率。 这样的电池隔离器可以增加电化学电池单元内的电流密度的均匀性,其通常可能比它们的相对端附近在其终端附近经历更高的电流密度和更高的温度。 通过在电化学电池的电极之间设置可变的孔隙分离器,使得其末端具有比其相对端更低的孔隙率,通常通过隔膜的离子(例如锂离子)的输送可以在通常的高电流区域中受到更多的限制, 在正常低电流区域中较少受限制,从而增加电池单元内的电流密度的总体均匀性。 可变孔隙率电池隔板可以通过干拉伸工艺或湿法制造。 这些方法可以包括形成含聚合物的膜,产生膜内的孔隙位置的均匀分布,以及将含聚合物的膜重整为均匀的厚度。
    • 8. 发明授权
    • Shape memory polymer medical cast
    • 形状记忆聚合物医用铸件
    • US08100843B2
    • 2012-01-24
    • US12410415
    • 2009-03-24
    • Ingrid A. RousseauElisabeth J. BergerJohn N. OwensHamid G. Kia
    • Ingrid A. RousseauElisabeth J. BergerJohn N. OwensHamid G. Kia
    • A61F5/00
    • A61F13/04
    • A medical cast and methods of using the same are disclosed. The method of making includes providing a shape memory polymer (SMP) in a permanent shape which corresponds to a limb's general shape but has a diameter smaller than the limb's diameter. The SMP is converted from the permanent shape into a primary temporary shape, which has a diameter larger than both a diameter of the permanent shape and a diameter of the limb. The limb is at least partially surrounded with the SMP in its primary temporary shape. The SMP is then heated, which causes the primary temporary shape to i) attempt to revert to the permanent shape, and ii) conform to a secondary temporary shape having a diameter smaller than that of the primary temporary shape and larger than that of the permanent shape. The SMP in the secondary temporary shape conforms to the limb.
    • 公开了医用铸件及其使用方法。 制造方法包括提供形状记忆聚合物(SMP),该形状记忆聚合物(SMP)具有对应于肢体的一般形状但直径小于肢体直径的永久形状。 SMP从永久形状转换成具有比永久形状的直径和肢体直径都大的直径的初级临时形状。 肢体至少部分地被SMP初步临时形成。 然后加热SMP,这导致初级临时形状i)试图恢复到永久形状,以及ii)符合具有小于初级临时形状的直径的直径的永久形状的二次临时形状,并且大于永久形状 形状。 次临时形状的SMP符合肢体。