公开(公告)号：US20110168550A1

公开(公告)日：2011-07-14

申请号：US12953143

申请日：2010-11-23

申请人： Connie P. Wang ,  Sergey D. Lopatin ,  Robert Z. Bachrach ,  Godfrey Sikha

发明人： Connie P. Wang ,  Sergey D. Lopatin ,  Robert Z. Bachrach ,  Godfrey Sikha

IPC分类号： C25B11/04 ,  B05D5/12 ,  B05D1/36 ,  B05C13/02 ,  B05C11/00

CPC分类号： H01M4/70 ,  H01M4/0404 ,  H01M4/0419 ,  H01M4/043 ,  H01M4/13 ,  H01M4/131 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/581 ,  H01M4/5815 ,  H01M4/582 ,  H01M4/5825 ,  H01M4/621 ,  H01M4/623 ,  H01M4/742 ,  H01M4/745 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02P20/133

摘要： Embodiments described herein provide methods and systems for manufacturing faster charging, higher capacity energy storage devices that are smaller, lighter, and can be more cost effectively manufactured at a higher production rate. In one embodiment, a graded cathode structure is provided. The graded cathode structure comprises a conductive substrate, a first porous layer comprising a first cathodically active material having a first porosity formed on the conductive substrate, and a second porous layer comprising a second cathodically active material having a second porosity formed on the first porous layer. In certain embodiments, the first porosity is greater than the second porosity. In certain embodiments, the first porosity is less than the second porosity.

摘要翻译： 本文描述的实施例提供了用于制造更快充电的方法和系统，更高容量的能量存储装置，其更小，更轻，并且可以以更高的生产率更成本有效地制造。 在一个实施例中，提供渐变阴极结构。 分级阴极结构包括导电衬底，第一多孔层，包括在导电衬底上形成的具有第一孔隙的第一阴极活性材料和第二多孔层，第二多孔层包括在第一多孔层上形成的具有第二孔隙的第二阴极活性材料 。 在某些实施方案中，第一孔隙率大于第二孔隙率。 在某些实施例中，第一孔隙度小于第二孔隙率。

公开(公告)号：US20110244277A1

公开(公告)日：2011-10-06

申请号：US13076337

申请日：2011-03-30

申请人： Joseph Grover Gordon, II ,  Alan J. Gotcher ,  Godfrey Sikha ,  Gregory J. Wilson

发明人： Joseph Grover Gordon, II ,  Alan J. Gotcher ,  Godfrey Sikha ,  Gregory J. Wilson

IPC分类号： H01M2/38

CPC分类号： H01M8/04186 ,  H01M2/38 ,  H01M8/188 ,  H01M8/20

摘要： High performance flow batteries, based on alkaline zinc/ferro-ferricyanide rechargeable (“ZnFe”) and similar flow batteries, may include one or more of the following improvements. First, the battery design has a cell stack comprising a low resistance positive electrode in at least one positive half cell and a low resistance negative electrode in at least one negative half cell, where the positive electrode and negative electrode resistances are selected for uniform high current density across a region of the cell stack. Second, a flow of electrolyte, such as zinc species in the ZnFe battery, with a high level of mixing through at least one negative half cell in a Zn deposition region proximate a deposition surface where the electrolyte close to the deposition surface has sufficiently high zinc concentration for deposition rates on the deposition surface that sustain the uniform high current density. The mixing in the flow may be induced by structures such as: conductive and non-conductive meshes; screens; ribbons; foam structures; arrays of cones, cylinders, or pyramids; and other arrangements of wires or tubes used solely or in combination with a planar electrode surface. Third, the zinc electrolyte has a high concentration and in some embodiments has a concentration greater than the equilibrium saturation concentration—the zinc electrolyte is super-saturated with Zn ions.

摘要翻译： 基于碱性锌/铁 - 铁氰化物可再充电（“ZnFe”）和类似流动电池的高性能流动电池可以包括一个或多个以下改进。 首先，电池设计具有包括在至少一个正半电池中的至少一个正半电池中的低电阻正电极和至少一个负半电池中的低电阻负极的电池堆，其中选择正极和负极电阻以实现均匀的高电流 细胞堆叠区域的密度。 其次，在ZnFe电池中的锌物质的流动通过在靠近沉积表面的电解质附近的Zn沉积区域中的至少一个负半电池的高水平混合具有足够高的锌 对沉积表面的沉积速率的浓度维持均匀的高电流密度。 流动中的混合可以由诸如：导电和非导电网格的结构引起; 屏幕; 丝带 泡沫结构; 锥体，圆柱体或金字塔阵列; 以及单独使用或与平面电极表面组合使用的电线或管的其它布置。 第三，锌电解质具有高浓度，在一些实施方案中具有大于平衡饱和浓度的浓度 - 锌电解质被Zn离子过饱和。