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| Number | Title | Issue Date |
| 8003261 | Polyolefin microporous membrane The present invention provides a microporous polyolefin film having a thickness of 1 μm (inclusive) to 50 μm (inclusive), a porosity of 30% (inclusive) to 70% (inclusive), a piercing strength of 0.15 N/μm or more in terms of a film thickness of 1 μm, tensile str... | 08/23/2011 |
| 7858240 | Electrode assembly and pouch type lithium rechargeable battery having the same The present invention relates to an electrode assembly and a pouch type lithium rechargeable battery having the same, which can minimize the total volume of a battery while maximizing a distance between electrode tabs. Insulation members cover portions of electrode ... | 12/28/2010 |
| 7413685 | Composition and method for making fuel cell collector plates with improved properties A method and composition is disclosed for making conductive flow field separator plates having reduced resistivity, lower weight and lower cost. The plates are made by blending from about 0.5 wt % to about 40 wt %, preferably from about 1 wt % to about 30 wt %, most... | 08/19/2008 |
| 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 |
| 7402360 | Non-aqueous electrolyte battery The invention provides a non-aqueous electrolyte battery characterized in that: an active material of the positive electrode includes lithium manganese oxide; the shut-down temperature of the separator is 162° C. or lower; and the area contraction ratio of the sepa... | 07/22/2008 |
| 7402539 | Battery separator Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2 or more, a thickness of the no... | 07/22/2008 |
| 7399555 | Non-aqueous electrolytic secondary battery A non-aqueous electrolyte secondary battery comprising: an electrode plate assembly; a non-aqueous electrolyte; and an outer jacket accommodating the electrode plate assembly and the non-aqueous electrolyte therein, the electrode plate assembly comprising a positive... | 07/15/2008 |
| 7387851 | Self-organizing battery structure with electrode particles that exert a repelling force on the opposite electrode An electrochemical device includes a first electrode in electrical communication with a first current collector, a second electrode in electrical communication with a second current collector and a crosslinked solid polymer in contact with the first and second elect... | 06/17/2008 |
| 7384433 | Densification of compressible layers during electrode lamination A compressible and deformable layer is densified and laminated to a layer of a material that is relatively resistant to stretching. The densification and bonding take place in a single step. As used in fabrication of electrodes, for example, electrodes for double la... | 06/10/2008 |
| 7374843 | Polyolefin microporous membrane and method of evaluating the same The invention relates to a microporous membrane, which is provided with high safety even under a condition that the interior temperature of a battery becomes high, and which has high permeability and high mechanical strength at the same time. The polyolefin m... | 05/20/2008 |
| 7323265 | High stability membrane for proton exchange membrane fuel cells A proton exchange membrane which includes a sulfonated and phosphonated poly (styrene) material having a covalently bonded tertiary hydrogen replacement group. ... | 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 |
| 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 |
| 7311994 | Separator for lithium ion secondary battery and lithium ion secondary battery provided therewith A separator for a lithium ion secondary battery, comprising a porous base material containing polyolefin, and a porous layer containing a vinylidene fluoride resin as a main component provided on at least one surface of the porous base material is excellent in elect... | 12/25/2007 |
| 7300880 | Methods for forming fine photoresist patterns A method of forming a fine pattern by a tri-layer resist process to overcome a bi-layer resist process is disclosed. When a fine pattern is formed using a silicon photoresist, a gas protection film is coated on a photoresist to prevent exhaustion of silicon gas gene... | 11/27/2007 |
| 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 |
| 7288338 | Mat of glass and other fibers and method for producing such mat A binderless glass fiber mat suitable for use as a separator for valve regulated (“recombinant”) lead acid (“VRLA”) batteries is disclosed. The separator is produced by a dry process by collecting the fibers from fiberizing apparatus, without subjecting them... | 10/30/2007 |
| 7285360 | Polymer gel electrolyte composition and method of producing the same A polymer gel electrolyte composition includes a crosslinked polymer network matrix having a three-dimensional crosslinked structure that includes a solution of an electrolyte in a non-aqueous solvent, and a non-crosslinked polymer included within the crosslinked po... | 10/23/2007 |
| 7279251 | Lithium secondary battery comprising a super fine fibrous polymer separator film and its fabrication method The present invention provides a lithium secondary battery and its fabrication method. More particularly, the present invention provides a lithium secondary battery comprising a super fine fibrous porous polymer separator film and its fabrication method, wherein the... | 10/09/2007 |
| 7270914 | Lithium secondary cell In a lithium secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, the internal resistance of the cell and the interfacial resistance between the electrode and the polymer electrolyte can ... | 09/18/2007 |
| 7267909 | Battery separators containing reactive functional groups A battery separator having a thermal shutdown mechanism and exhibiting excellent mechanical properties and low electrical resistance includes a water-scavenging and/or acid-scavenging material having reactive functional groups that chemically react with water or aci... | 09/11/2007 |
| 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 |
| 7214756 | Proton conducting membrane, process for its production, and fuel cells made by using the same The present invention provides relates to a crosslinkable, proton-conducting membrane having a crosslinked structure, excellent in heat resistance, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high ... | 05/08/2007 |
| 7214444 | Melt blown battery separator Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (μ) and lengths great... | 05/08/2007 |
| 7204862 | Packaged thin film batteries and methods of packaging thin film batteries A packaged battery (10) and method of producing such is provided having a thin film lithium battery cell (11) sealably encased within a packaging layer (12). The battery cell (11) includes a substrate (13), an anode (16), an... | 04/17/2007 |
| 7199997 | Asymmetric electrochemical supercapacitor and method of manufacture thereof An asymmetric supercapacitor has a positive electrode having a current collector an active material selected from the group consisting of manganese dioxide, silver oxide, iron sulfide and mixtures thereof, a negative electrode having a carbonaceous active material c... | 04/03/2007 |
| 7198870 | Polyimide matrix electrolyte A polymer matrix electrolyte (PME) includes a polyimide, at least one salt and at least one solvent intermixed. The PME is generally homogeneous as evidenced by its high level of optically clarity. The PME is stable through harsh temperature and pressure conditions.... | 04/03/2007 |
| 7183020 | Separator for battery and lithium ion battery using the same A battery separator of the invention is obtained by press forming a meltblown nonwoven fabric comprising 4-methyl-1-pentene polymer or a 4-methyl-1-pentene/α-olefin copolymer, the battery separator having an average fiber diameter of 0.8 to 5 μm, a basis weight of... | 02/27/2007 |
| 7183019 | Negative active material composition for a rechargeable lithium battery, method of producing a negative electrode for a rechargeable lithium battery using the same, and rechargeable lithium battery fabricated using the same Disclosed is a negative active material composition for a rechargeable lithium battery, a method of producing a negative electrode for a rechargeable lithium battery using the same, and a rechargeable lithium battery using the same. The negative active material comp... | 02/27/2007 |
| 7175937 | Separator having inorganic protective film and lithium battery using the same Provided are a separator having an inorganic protective film and a lithium battery using the separator. The separator has suppressed self discharge and reduced internal shorting. ... | 02/13/2007 |
| 7170739 | Electrochemical double layer capacitors including improved nanofiber separators Electrochemical double layer capacitors are disclosed that advantageously include separators having at least one porous layer of nanofibers having average diameters of between about 50 nm and about 1000 nm that provide improved combinations of reduced thickness, bar... | 01/30/2007 |
| 7160968 | Phosphoric acid group-containing polymer electrolyte (composite) membrane and its production method The invention relates to solid polyelectrolyte membranes and processes for their production. As solid polyelectrolyte materials, there have been known fluoropolymers which have perfluoroskeletons and side chains bearing sulfonic acid groups and heat-resistant resins... | 01/09/2007 |
| 7160645 | Lead-acid battery having an organic polymer additive and process thereof A process for prolonging the life of a lead-acid battery by adding an organic polymer and ultra fine lignin to its electrolyte and then discharging the battery at a high current rate and the battery so produced. ... | 01/09/2007 |
| 7153609 | Rechargeable battery with nonaqueous electrolyte A rechargeable battery with a nonaqueous electrolyte using a constituent material, which has high energy density and a high level of safety. The constituent material includes a positive electrode having a lithium compound-containing active material and a current col... | 12/26/2006 |
| 7138203 | Apparatus and method of manufacture of electrochemical cell components A component for an electrochemical cell comprises a thermally and electrically conductive core, wherein the conductive core comprises apertures, and wherein the conductive core further comprises an active area substantially covered by an electrically and thermally c... | 11/21/2006 |
| 7135253 | High discharge current lithium secondary battery and method of manufacture To provide a lithium secondary battery with a high critical discharge current even under a low temperature condition, with an excellent cycle characteristic and reduced manufacturing cost. The lithium secondary battery includes a wound type electrode body comprising... | 11/14/2006 |
| 7132195 | Separator for sealed lead-acid battery A sealed lead-acid battery includes a separator made from hydrophilic treated sheet made from synthetic fiber which wraps at least either one of a positive electrode and a negative electrode. A mat type separator made from fine glass fiber is disposed between the wr... | 11/07/2006 |
| 7129005 | Polyimide matrix electrolyte and improved batteries therefrom A battery includes an anode, a cathode, and a polymer matrix electrolyte (PME) separator disposed between the anode and the cathode. The PME separator includes a polyimide, at least one lithium salt in a concentration of at least 0.5 moles of lithium per mole of imi... | 10/31/2006 |
| 7112389 | Batteries including improved fine fiber separators Alkaline and lithium batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barr... | 09/26/2006 |
| 7094497 | Separator for lithium ion secondary battery A separator, used for a lithium ion secondary battery that produces electromotive force by lithium doping/dedoping, which is composed of a porous film comprising an organic polymer (component A) which can swell in an electrolyte solution to retain it, surrounding a ... | 08/22/2006 |
