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1
US20190044097A1
Publication/Patent Number: US20190044097A1
Publication date: 2019-02-07
Application number: 16/074,799
Filing date: 2016-03-18
Abstract: Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. Such battery pouches may be prepared to contain a stacked grouping, or a wound grouping, of inter-layered and interconnected anodes, cathodes, and separators, each wetted with a liquid electrolyte. A reference electrode, an optional auxiliary reference electrode, and adjacent enclosing modified working electrodes are combined in a specific arrangement and inserted within the stack structure, or the wound structure, of other cell members to enable accurate assessment of both anode group and cathode group performance, and to validate and regenerate reference electrode capability. Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. Such battery pouches may be prepared to contain a stacked grouping, or a wound ...more ...less
2
US20190044177A1
Publication/Patent Number: US20190044177A1
Publication date: 2019-02-07
Application number: 15/759,618
Filing date: 2017-07-07
Assignee: LG CHEM, LTD.
Abstract: The present invention relates to an electrode assembly and a method for manufacturing the same, and more particularly, to an electrode assembly in which a degree of alignment of cells is improved and a method for manufacturing the same. An electrode assembly according to the present invention comprises a separator sheet folded in a zigzag shape and a unit cell having a structure in which an electrode and a separator are alternately stacked, wherein the unit cell is repeatedly disposed between the separator sheet that is folded in a zigzag shape, and at least a portion of the unit cell and at least a portion of the separator sheet are bonded to each other. The present invention relates to an electrode assembly and a method for manufacturing the same, and more particularly, to an electrode assembly in which a degree of alignment of cells is improved and a method for manufacturing the same. An electrode assembly according to the ...more ...less
3
US20190035561A1
Publication/Patent Number: US20190035561A1
Publication date: 2019-01-31
Application number: 16/149,549
Filing date: 2018-10-02
Abstract: Representative embodiments provide a liquid or gel separator utilized to separate and space apart first and second conductors or electrodes of an energy storage device, such as a battery or a supercapacitor. A representative liquid or gel separator comprises a plurality of particles, typically having a size (in any dimension) between about 0.5 to about 50 microns; a first, ionic liquid electrolyte; and a polymer. In another representative embodiment, the plurality of particles comprise diatoms, diatomaceous frustules, and/or diatomaceous fragments or remains. Another representative embodiment further comprises a second electrolyte different from the first electrolyte; the plurality of particles are comprised of silicate glass; the first and second electrolytes comprise zinc tetrafluoroborate salt in 1-ethyl-3-methylimidalzolium tetrafluoroborate ionic liquid; and the polymer comprises polyvinyl alcohol (“PVA”) or polyvinylidene fluoride (“PVFD”). Additional components, such as additional electrolytes and solvents, may also be included. Representative embodiments provide a liquid or gel separator utilized to separate and space apart first and second conductors or electrodes of an energy storage device, such as a battery or a supercapacitor. A representative liquid or gel separator comprises a plurality of ...more ...less
4
US20190036095A1
Publication/Patent Number: US20190036095A1
Publication date: 2019-01-31
Application number: 16/152,504
Filing date: 2018-10-05
Abstract: According to one embodiment, the secondary battery includes a container, an electrode structure provided in the container and an electrolyte provided in the container. The electrode structure includes a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode. The separator includes an organic fiber layer accumulated on at least one of the positive electrode and the negative electrode. The organic fiber layer has contacts in which the organic fiber intersects with itself. The form of the intersections is changed by a tensile stress. According to one embodiment, the secondary battery includes a container, an electrode structure provided in the container and an electrolyte provided in the container. The electrode structure includes a positive electrode, a negative electrode, and a separator provided between ...more ...less
5
US20190036149A1
Publication/Patent Number: US20190036149A1
Publication date: 2019-01-31
Application number: 16/072,403
Filing date: 2017-01-25
Abstract: An electrode stacking device includes a stacking unit that is disposed between a positive electrode conveying unit conveying a separator-equipped positive electrode and a negative electrode conveying unit conveying a negative electrode, and includes a plurality of stages of stacking sections on which the separator-equipped positive electrode and the negative electrode are stacked, a conveying control unit that controls a drive section to hold a plurality of the separator-equipped positive electrodes at height positions corresponding to the plurality of stages of stacking section and controls a drive section to hold a plurality of the negative electrodes at height positions corresponding to the plurality of stages of stacking sections, a push-out unit that simultaneously pushes out the plurality of separator-equipped positive electrodes toward the plurality of stages of stacking sections, and a push-out unit that simultaneously pushes out the plurality of negative electrodes toward the plurality of stages of stacking sections. An electrode stacking device includes a stacking unit that is disposed between a positive electrode conveying unit conveying a separator-equipped positive electrode and a negative electrode conveying unit conveying a negative electrode, and includes a plurality of stages of ...more ...less
6
US20190020008A1
Publication/Patent Number: US20190020008A1
Publication date: 2019-01-17
Application number: 16/066,396
Filing date: 2017-08-28
Assignee: LG CHEM, LTD.
Abstract: The present disclosure relates to a separator for an electrochemical device. The separator includes a porous coating layer containing inorganic particles on the surface of a porous polymer substrate, wherein the porous coating layer includes plate-like inorganic particles and spherical inorganic particles as inorganic particles, and shows a step-wise or successive increase in content of inorganic particles a) from the bottom close to the porous polymer substrate to the top, when viewed from the thickness direction of the porous coating layer, and shows a step-wise or successive decrease in content of inorganic particles b) from the bottom close to the porous polymer substrate to the top, when viewed from the thickness direction of the porous coating layer. The present disclosure relates to a separator for an electrochemical device. The separator includes a porous coating layer containing inorganic particles on the surface of a porous polymer substrate, wherein the porous coating layer includes plate-like inorganic particles and ...more ...less
7
US20190020061A1
Publication/Patent Number: US20190020061A1
Publication date: 2019-01-17
Application number: 16/037,902
Filing date: 2018-07-17
Abstract: The present disclosure is directed to a triazine-modified ionic liquid compound, the synthesis thereof and an electrochemical cell electrolyte containing the triazine-modified ionic liquid compound.
8
US20190027727A1
Publication/Patent Number: US20190027727A1
Publication date: 2019-01-24
Application number: 15/312,924
Filing date: 2016-04-15
Abstract: A long separator sheet (12a′, 12b′) has a right edge part (12c′) that is in a trapezoidal shape and a left edge part (12d′) having a curved shape. Therefore, it is possible to provide a long porous separator sheet which satisfies both a good electrolyte take-in property (i.e., liquid absorption property) and a good electrolyte retaining property (i.e., liquid retention property). A long separator sheet (12a′, 12b′) has a right edge part (12c′) that is in a trapezoidal shape and a left edge part (12d′) having a curved shape. Therefore, it is possible to provide a long porous separator sheet which satisfies both a good ...more ...less
9
US20190027728A1
Publication/Patent Number: US20190027728A1
Publication date: 2019-01-24
Application number: 16/137,699
Filing date: 2018-09-21
Abstract: The invention provides a coating or film adapted to be arranged between a separator and at least one electrode of a rechargeable battery. The coating or film comprises a porous layer comprising a layer material having at least a first material and a second material, the first and the second materials being arranged to comprise a plurality of pores for passage of ions therethrough; and the second material is adapted to reduce in size upon drying such that porosity of the porous layer is improved or enhanced at a normal operating temperature; wherein, in response to temperature change, the layer material is adapted to undergo a first phase change during which the pores of said porous layer are adapted to substantially close to thereby substantially reduce or prevent further passage of ions. The invention provides a coating or film adapted to be arranged between a separator and at least one electrode of a rechargeable battery. The coating or film comprises a porous layer comprising a layer material having at least a first material and a second material, the first ...more ...less
10
US20190027732A1
Publication/Patent Number: US20190027732A1
Publication date: 2019-01-24
Application number: 16/068,715
Filing date: 2016-02-26
Abstract: A conventional bipolar battery is constituted of a combination of cells hermetically sealed for preventing a liquid junction and preventing corrosion of a peripheral device due to a liquid leakage. Therefore, electrolytic solution injecting processes are carried out as many as the number of cells, so that much times and costs have been required for manufacturing a large-scale battery. In addition, a wiring space has been required since the cells are connected to one another with wires. The use of a current collector formed of a one-end closed tubular conductor, the current collector having a bottom protruding outward to form a protrusion, eliminates the wiring space and achieves a reduction in ohmic loss due to the wires. In addition, an electrolytic solution in one cell is separated by a water-repellent sheet from an electrolytic solution in another cell, so that a liquid junction is prevented. A conventional bipolar battery is constituted of a combination of cells hermetically sealed for preventing a liquid junction and preventing corrosion of a peripheral device due to a liquid leakage. Therefore, electrolytic solution injecting processes are carried out as many as ...more ...less
11
US20190027785A1
Publication/Patent Number: US20190027785A1
Publication date: 2019-01-24
Application number: 15/657,311
Filing date: 2017-07-24
Abstract: Nonaqueous electrolyte solvents or additives include components synthesized for advanced rechargeable batteries using diversified chemistries to achieve high energy densities. The electrolyte components are generated to create the formation of protective interphases on both cathode and anode surfaces simultaneously. The electrolyte components integrate the key structural elements into a single molecule, thus rendering the stabilization of electrode/electrolyte interfaces more efficiently and with parasitic reactions minimized. The electrolyte components have several applications in diversified battery chemistries such as Li-ion of high voltage and high capacity as well as beyond Li-ion (e.g., Li/sulfur, Na and Mg ion as well as conversion-reaction). Nonaqueous electrolyte solvents or additives include components synthesized for advanced rechargeable batteries using diversified chemistries to achieve high energy densities. The electrolyte components are generated to create the formation of protective interphases on both ...more ...less
12
US20190013543A1
Publication/Patent Number: US20190013543A1
Publication date: 2019-01-10
Application number: 16/020,024
Filing date: 2018-06-27
Abstract: A nonaqueous electrolyte secondary battery includes an electrode assembly including a negative electrode and a positive electrode including a positive electrode active material mix layer containing a lithium-transition metal composite oxide which is a positive electrode active material; a nonaqueous electrolyte; and a battery case that houses the electrode assembly and the nonaqueous electrolyte. The positive electrode active material has a film formed thereon and the film contains 0.04 μmol to 0.19 μmol of sulfur per square meter of the specific surface area of particles of the positive electrode active material. A nonaqueous electrolyte secondary battery includes an electrode assembly including a negative electrode and a positive electrode including a positive electrode active material mix layer containing a lithium-transition metal composite oxide which is a positive electrode active ...more ...less
13
US20190047963A1
Publication/Patent Number: US20190047963A1
Publication date: 2019-02-14
Application number: 15/566,595
Filing date: 2016-04-14
Abstract: The invention provides: imidazole and imidazolium compounds of formulas (I) and (II): polymers containing a plurality of imidazolium-containing repeating units of formula (III′): and membranes and devices comprising the polymers. Also provided are methods of making the inventive compounds and polymers. The invention provides: imidazole and imidazolium compounds of formulas (I) and (II): polymers containing a plurality of imidazolium-containing repeating units of formula (III′): and membranes and devices comprising the polymers. Also provided are ...more ...less
14
US20190058176A1
Publication/Patent Number: US20190058176A1
Publication date: 2019-02-21
Application number: 16/169,131
Filing date: 2018-10-24
Assignee: ZPower, LLC
Abstract: The present invention provides a separator for use in an alkaline electrochemical cell comprising a polymer material and an inert filler comprising zirconium oxide. Examples of polymer materials useful in this invention include ABS polymer material, halogenated alkylene polymer material, and PE polymer material. The present invention provides a separator for use in an alkaline electrochemical cell comprising a polymer material and an inert filler comprising zirconium oxide. Examples of polymer materials useful in this invention include ABS polymer material, halogenated alkylene polymer ...more ...less