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| Number | Title | Issue Date |
| 8119273 | Unique battery with an active membrane separator having uniform physico-chemically functionalized ion channels and a method making the same The invention relates to a unique battery having an active, porous membrane and method of making the same. More specifically the invention relates to a sealed battery system having a porous, metal oxide membrane with uniform, physicochemically functionalized ion cha... | 02/21/2012 |
| 8017263 | Separator and battery A battery in which a cathode and an anode are arranged so as to face each other an having a separator in between is provided. The separator is formed from a plurality of laminated microporous membranes and has a film thickness of 10x μm and a piercing strength of 1... | 09/13/2011 |
| 8012622 | Multi-layer, microporous membrane, battery separator and battery The invention relates to a multi-layer, microporous polyolefin membrane having appropriate permeability, pin puncture strength, shutdown temperature, shutdown speed, meltdown temperature, and thickness uniformity. The invention also relates to a battery separator fo... | 09/06/2011 |
| 7875380 | Complex membrane for electrochemical device, manufacturing method and electrochemical device having the same A complex membrane for an electrochemical device such as a lithium secondary battery, its manufacturing method, and an electrochemical device having the complex membrane are disclosed. The complex membrane includes a micro-porous polyolefin membrane, and a web-phase... | 01/25/2011 |
| 7781094 | Microporous composite membrane and its production method and use A microporous composite membrane obtained by coating at least one surface of a microporous polyolefin membrane with a solution of a gelable fluororesin in a mixed solvent of a good solvent for the fluororesin, and a poor solvent having a dipole moment of 1.8 Debye o... | 08/24/2010 |
| 7718310 | Electrochemical cell having a galaxy wind design An electrochemical cell is described. The cell comprises a cathode material contacted to a perforated current collector having a portion left uncovered and an anode material contacted to an anode current collector. The anode comprises first and second strips positio... | 05/18/2010 |
| 7709140 | Separator provided with asymmetrical pore structures for an electrochemical cell A separator for an electrochemical cell, comprising (A) a flexible perforate support, and (B) a porous ceramic material which fills the perforations in the support and is suitable for receiving an ion-conducting electrolyte, wherein the porous ceramic material compr... | 05/04/2010 |
| RE41203 | Alkaline battery separator and process for producing the same An alkaline battery separator which enables the preparation of a battery with a good yield and workability is provided. The alkaline battery separator of the present invention comprises a fiber sheet mainly comprising hydrophilicity-imparted polyolefin fibers having... | 04/06/2010 |
| 7645540 | Separators for alkaline electrochemical cells The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical ... | 01/12/2010 |
| 7407728 | Alkaline cell or battery An alkaline cell or battery having at least one positive and one negative electrode which are separated by a separator and which are disposed, along with an alkaline electrolyte, in a housing, the separator being a non-woven fabric, a microporous foil, or a web made... | 08/05/2008 |
| 7323274 | Shutdown separators with improved properties A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130-140 degrees C. and melt integrity greater than 165 degrees C. It is made of UHMWPE having a weigh... | 01/29/2008 |
| 7323273 | Shutdown separators with improved properties A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130-140 degrees C. and melt integrity greater than 165 degrees C. It is made of UHMWPE having a weigh... | 01/29/2008 |
| 7288343 | Structure and methods of fabricating binding layers for a Li-ion polymer battery A Li-ion polymer battery and methods for its fabrication. A first and second layer, of a polymer/particulate material composition, separate and bind each anode and cathode. The polymer of the first layer and its associated solvent differ from the polymer of the seco... | 10/30/2007 |
| 7238744 | Ultrahigh molecular weight polyethylene articles and method of manufacture An article of manufacture comprises an ultrahigh molecular weight polyethylene (UHMWPE) mixed with a processing oil and a lubricant selected from the group consisting of fatty acid esters, ethoxylated fatty acid esters, glycol esters, PEG esters, glycerol esters, et... | 07/03/2007 |
| 7226646 | Membranes and electrochemical cells incorporating such membranes One aspect of the invention provides an ion-conducting membrane comprising an ion-conducting region and a non-ion-conducting region. The ion-conducting region is formed by a plurality of ion-conducting passageways that extend through the membrane. The passageways ar... | 06/05/2007 |
| 7223491 | Fuel cells incorporating membranes A fuel cell has an ion-conducting membrane comprising an ion-conducting region and a non-ion-conducting region. The ion-conducting region is formed by a plurality of ion-conducting passageways that extend through the membrane. The passageways are filled with ion-con... | 05/29/2007 |
| 7160603 | Microporous articles and methods of preparation Provided are methods of preparing an article in which a microporous layer is coated on a temporary carrier substrate and a substrate is then laminated to the microporous layer, prior to removing the temporary carrier substrate from the microporous layer. The micropo... | 01/09/2007 |
| 7147678 | Alkaline cell with improved anode A method of forming an anode comprising zinc for an alkaline cell. The method involves mixing zinc particles with binders including preferably polyvinylalcohol, surfactant and water to form a wet paste. The wet paste is molded into the near shape of the cell's anode... | 12/12/2006 |
| 7138207 | Non-aqueous electrolyte secondary cell A non-aqueous electrolyte secondary cell which achieves satisfactory low temperature characteristics and high safety against overcharging in combination. The cell includes a lithium-containing cathode, an anode capable of doping and undoping lithium, a non-aqueous e... | 11/21/2006 |
| 7138208 | Rechargeable lithium ion battery A rechargeable lithium ion battery with high power density comprises a positive electrode; a negative electrode; and a non-aqueous electrolytic solution, in which the positive electrode includes a active material layer containing a positive electrode active material... | 11/21/2006 |
| 7081320 | High energy density secondary battery for repeated use A secondary battery exhibiting a long cycle life and comprising a negative pole activating material made of lithium or zinc is provided, the battery at least having a negative pole made of lithium or zinc serving as the negative pole activating material, an electrol... | 07/25/2006 |
| 7081321 | Separator for metal halogen cell A separator for metal/halogen batteries is provided which is excellent in thermal resistance, resistance to stress-cracking and electric properties. A separator for metal/halogen batteries comprising a polyolefin having a viscosity average molecular weight of not le... | 07/25/2006 |
| 7066970 | Electrochemical cells Electrochemical cells and methods of making cells are disclosed. In some embodiments, an electrochemical cell includes a housing, a negative electrode in the housing, a positive electrode in the housing, the positive electrode including a wax, and a separator betwee... | 06/27/2006 |
| 7052800 | Separator for nickel-metal hydride storage battery and nickel-metal hydride storage battery A separator for a nickel-metal hydride storage battery having a hydrogen-absorbing alloy as a negative electrode. The separator is a laminate of a substrate and a porous hydrophilic film. ... | 05/30/2006 |
| 7049361 | Polyolefin series resinfilm, composition for preparing the same, process for preparing the composition for preparing the same, and apparatus for preparing the same The polyolefin [A] has a weight average molecular chain length of 2850 nm or longer and a density ρ1 (g/cm3), the polyolefin wax [B] has a weight average molecular weight of 700–6000 and a density ρ2 (g/cm3), the polyolefin an... | 05/23/2006 |
| 7029792 | Recombinant separator A heterogeneous, cellulose battery separator made of a mixture of cellulose and a polymer with hydrogen permeability for use in zinc-based batteries exhibiting increased hydrogen transport through the membrane while maintaining low electrical impedance and exhibitin... | 04/18/2006 |
| 7014948 | Electrochemical device using multicomponent composite membrane film The present invention provides a electrochemical element, wherein a multi-component composite film comprising a) polymer support layer film and b) a porous gellable polymer layer which is formed on either or both sides of the support layer film of a), wherein the su... | 03/21/2006 |
| 7008722 | Polymer-gel lithium ion battery An embodiment of the invention is a new method of making a polymer lithium ion battery with low cost, high efficiency and excellent quality. The new polymer lithium ion battery comprises four major components, each of which is a composite: an anode, a cathode, a pol... | 03/07/2006 |
| 6949315 | Shutdown separators with improved properties A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130–140 degrees C. and melt integrity greater than 165 degrees C. It is made of UHMWPE having a wei... | 09/27/2005 |
| 6929858 | Glass fibers Glass fibers are disclosed. The glass fibers can be used, for example, in a lead acid battery. ... | 08/16/2005 |
| 6921608 | Battery separator The present invention is directed to a battery separator. The battery separator comprises a microporous film having a first portion and a second portion. The first portion is bonded to the second portion. The bond has a strength greater than 5 g/in. The film has a t... | 07/26/2005 |
| 6881515 | Separator for polymer battery The instant invention is a separator for a lithium polymer battery. The separator comprises a membrane and a coating. The membrane has a first surface, a second surface, and a plurality of micropores extending from the first surface to the second surface. The coatin... | 04/19/2005 |
| 6878484 | Separator for secondary battery and method for producing the same An object of the present invention is to provide a thin battery separator having an excellent nitrate group trapping performance and a high piercing strength. The inventive separator for a secondary battery, which can accomplish such an object, is made of a resin co... | 04/12/2005 |
| 6869726 | Reinforced multilayer separator for lead-acid batteries A battery separator comprising at least one fibrous layer and at least one support layer, wherein the support layer is formed of an acid-resistant material and comprises a plurality of macroscopic openings. ... | 03/22/2005 |
| 6869725 | Sealed battery The center pin 20 is cylindrical and tube-shaped, and each of the planes formed by the external surface of the center pin 20 in the vicinity of the edges 22a and 22b of the slit 21 is angled toward the inside of the c... | 03/22/2005 |
| 6852444 | Reinforced multilayer separator for lead-acid batteries A battery separator comprising at least one fibrous layer and at least one support layer, wherein the support layer is formed of an acid-resistant material and comprises a plurality of macroscopic openings. ... | 02/08/2005 |
| 6830845 | Cylindrical battery and method and device for manufacturing thereof In the process of manufacturing a cylindrical battery, when a tubular separator (3) and bottom separator (5) are inserted into a battery casing (1) in which are accommodated positive electrode mixture pellets (2), by inserting the bottom ... | 12/14/2004 |
| 6824926 | Silica filled polymeric separator containing efficiency improving diatomite additives A battery element of a lead acid battery including a negative plate, a positive plate and a silica filled polyolefin separator having an additive associated with the separator that improves the overall efficiency of the lead acid battery. ... | 11/30/2004 |
| 6821680 | Battery separator, process for producing the same, and alkaline battery A battery including a separator having a satisfactory ammonia trapping property is speculated to exhibit a less self-discharge and a higher capacity-holding rate. The ammonia trapping property is speculated to be increased with an increasing degree of sulfonation of... | 11/23/2004 |
| 6818354 | Nonaqueous electrolyte secondary cell In a non-aqueous secondary cell having a positive electrode, a negative electrode, a nonaqueous electrolyte, a separator interposed between the positive electrode and the negative electrode, the positive electrode having a positive electrode active material includin... | 11/16/2004 |
