224results about "Bipolar electrodes" patented technology

Provided is a stack-type cell for a secondary battery including a stack of first electrode/separator/second electrode/separator/first electrode arranged in order, and an outer separator stacked on each of the first electrodes. Also, the present invention provides an electrode assembly for a secondary battery using the stack-type cell and a manufacturing method thereof.

The invention relates to an article comprising: a) one or more stacks of battery plates comprising one or more bipolar plates; b) located between each plate is a separator and a liquid electrolyte; further comprising one of more of the features: 1) c) the one or more stacks of battery plates having a plurality of channels passing transversely though the portion of the plates having the cathode and/or the anode deposited thereon; and d) i) one or more seals about the periphery of the channels which prevent the leakage of the liquid electrolyte into the channels, and/or posts located in one or more of the channels having on each end an overlapping portion that covers the channel and sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surface of the monopolar plates wherein the pressure is sufficient to withstand pressures created during assembly and operation of electrochemical cells created by the stacks of battery plates; 2) c) a membrane comprising a thermoplastic polymer is disposed about the entire periphery of the edges of the stack of plates; 3) wherein the separator is in the form of a sheet having adhered to its periphery a frame; and 4) c) an integrated valve and integrated channel communicating with the valve.

The present invention relates to a bipolar battery, especially a NiMH battery, having: a sealed housing, a negative end terminal, a positive end terminal, and at least one biplate assembly comprising a biplate, a positive and a negative electrode. A separator is arranged between each negative and positive electrode forming a battery cell, said separator includes an electrolyte. An inner barrier of a hydrophobic material is arranged around at least one electrode, whereby said inner barrier prevents an electrolyte path from one cell to another cell, and a frame is present to provide predetermined cell spacing between each biplate and/or biplate and end terminal. The frame is attached in such a way to each biplate to permit ambient gas to pass between adjacent cells, thereby creating a common gas space for all cells in the battery. The invention also relates to a method for manufacturing a bipolar battery.

The present invention relates to a bipolar battery having at least two battery cells comprising: a sealed housing, a negative end terminal, a positive end terminal, at least one biplate assembly arranged in a sandwich structure between said negative and positive end terminals, and a separator, including an electrolyte, arranged between each negative and positive electrode forming a battery cell. The biplate assembly is provided with an inner barrier of a hydrophobic material around the negative and the positive electrode, respectively, and an outer seal around the edge of each biplate. Each end terminal is provided with a terminal seal. The edge of each biplate is positioned close to the sealed housing to provide means to conduct heat from each biplate assembly to the ambient environment. The invention also relates to a method for manufacturing a bipolar battery and a biplate assembly.

The present invention is drawn to a high power electrochemical energy storage device in a bipolar configuration, comprising at least n stackable cells (20) in bipolar configuration wherein subgroups of m cells are electronically monitored (63). The storage cells (20) have a lithium ion insertion anode (24) and a lithium ion insertion cathode (26), a separator (36), an electrolyte system (36), and a leak-proof seal structure (51). A number of embodiments are disclosed, characterized by a favorable range of m values, in combination with the anode-to-cathode capacity ratio, electrolyte conductivity, and other battery key features, thereby providing a high power device providing long cycle life and excellent power performance over many thousand charge and discharge cycles while minimizing the cost for electronic monitoring. Additionally, the present invention is drawn to a device combining two or more groups of stackable cells in bipolar configuration, either in series or in parallel or any combination thereof, so as to create a high power, high voltage energy storage device.

A bipolar secondary battery has a battery element that includes first and second bipolar electrodes each having a collector disposed with a conductive resin layer containing a first resin as a base material and positive and negative electrode active material layers formed on opposite sides of the collector and a separator containing a second resin as a base material, arranged between the first and second bipolar electrodes and retaining an electrolyte material to form an electrolyte layer. The positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constitute a unit cell. A melting point of the first resin is lower than or equal to a melting point of the second resin. Outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell.

Water activated alkali metal battery cells, protected anode bi-polar electrodes and multi-cell stacks are configurable to achieve very high energy density. The cells, bi-polar electrode and multi-cell stacks include a protected anode and a cathode having a solid phase electro-active component material that is reduced during cell discharge.

The present invention provides a bipolar battery made by using a polymer gel electrolyte or a liquid electrolyte in an electrolyte layer, which is highly reliable and prevents liquid junction (short circuit) caused by leak out of an electrolyte solution from the electrolyte part. The present invention provides a bipolar battery laminated, in series, with a plurality pieces of bipolar electrodes which is formed with a positive electrode on one surface of a collector, and a negative electrode on the other surface, so as to sandwich an electrolyte layer, characterized by being provided with a separator which retains the electrolyte later, and a seal resin which is formed and arranged at the outer circumference part of a part of the separator where the electrolyte is retained.

Carbon materials having low gassing properties and electrodes and electrical energy storage devices, especially lead-acid batteries, comprising the same are provided.

An electric device has a plurality of cells in which in an acid electrolyte a lanthanide and zinc form a redox couple that provide a current, and in which at least two of the cells are separated by a bipolar electrode that comprises a glassy carbon or a Magneli phase titanium suboxide.

An electrochemical device having an anode electrode, a cathode electrode, and an electrolyte. At least one of the anode electrode and the cathode electrode is provided with a substantially uniform superficial relief pattern formed by a plurality of substantially uniform projections and has an electrical conductivity gradient between peaks of the projections and valleys between the projections

The invention relates to the technical field of a lithium ion battery, and particularly discloses a bipolar electrode, a lithium ion battery and a fabrication method of the lithium ion battery. The bipolar electrode comprises a current collector, also comprises a first conductive layer, a positive active layer, a second conductive layer and a negative active layer and also comprises a sealant, wherein the current collector is provided with a first surface and a second surface right opposite to the first surface, the first conductive layer and the positive active layer are outwards and sequentially laminated from the first surface, the second conductive layer and the negative active layer are outwards and sequentially laminated from the second surface, the sealant is used for firming the first conductive layer, the current collector and the second conductive layer and is arranged on surfaces of the first conductive layer, the current collector and the second conductive layer in a lamination way, the thickness of the sealant on the surface of the first conductive layer is same as the thickness of the positive active layer, and the thickness of the sealant on the surface of the second conductive layer is the same as the thickness of the negative active layer. With the bipolar electrode provided by the invention, the safety and the consistency of the lithium ion battery can be effectively improved.

The subject of the present invention is a lithium electrochemical generator comprising two peripheral electrodes—one positive and the other negative—each comprising an electrically conductive substrate (13, 21) and an active layer (14, 20) that includes an active material, at least one bipolar electrode comprising a positive active layer (18) on a first electrically conductive substrate and a negative active layer (16) on a second electrically conductive substrate, the said substrates being fixed together and two separators (15, 19) flanking each bipolar electrode, in which generator the electrically conductive substrates of each bipolar electrode are made of identical or different materials chosen from aluminium and its alloys and the negative active material of the bipolar electrode prevents an aluminium alloy being obtained with the electrically conductive substrates, under the operating conditions of the storage battery.

A bipolar battery comprising bipolar electrodes. The bipolar electrodes including corrugated bipolar substrates. The corrugated bipolar substrates may be formed as corrugated foils. The battery may be a nickel metal hydride battery.

A non-aqueous electrolyte battery having an wound electrode body including a positive electrode having a layer of a positive electrode active material formed on a current collector, a negative electrode having a layer of a negative electrode active material formed on a current collector and a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, where the positive electrode has an exposed portion having no layer of the positive electrode active material at least at one of a winding-start edge and a winding-finish edge of the positive electrode so as to provide a lead member connected to an external terminal, an insulating layer of plural resins is formed on the exposed portion of the current collector of the positive electrode in a part in which the exposed portion of the current collector of the positive electrode faces that of the negative electrode via the separator, and the winding-start edge or the winding-finish edge of the positive electrode having no lead member has no exposed portion of the current collector.

Electrodes including bipolar composite electrodes and end electrodes are characterized by a layer of electrochemically active material bonded to a first surface of a non-conductive electrode substrate material. In the case of a bipolar electrode, the opposing second surface of the substrate material also carries a layer of electrically active material, the layer of electrochemically active material contacting through said substrate material to provide a current pathway. In the case of an end electrode, the opposing second surface of the substrate material carries a layer of electrically active material, the layer of electrochemically active material contacting the layer of electrically active material through the substrate material to provide a current pathway. Processes of preparing the electrodes and uses of the electrodes in batteries are also disclosed.