227results 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.

A non-liquid electrolyte containing electrochemical cell which operates efficiently at room temperature. The cell includes (a) a non-liquid electrolyte in which protons are mobile, (b) an anode active material based on an organic compound which is a source of protons during cell discharge, or an anode active material including a metal whose cation can assume at least two different non-zero oxidation numbers and (c) a solid cathode including a compound which forms an electrochemical couple with the anode. Anode and cathode active materials can be chosen so that the cell has the feature that the electrochemical reactions at the anode and cathode are at least partially reversible. An important feature of the cell is that no thermal activation is required for its operation, therefore, the cell efficiently operates under ambient temperatures.

An electrode assembly for a secondary battery comprising an adiabatic plate attached to the negative electrode plate is disclosed. The electrode assembly comprises a positive electrode plate having a positive electrode collector, a positive electrode coating, and a non-coated area on the positive electrode collector. The negative electrode plate has a negative electrode collector, a negative electrode coating, and a non-coated area on the negative electrode collector. A separator insulates the positive and negative electrode plates. Positive and negative electrode tabs are attached to the non-coated areas of the positive and negative electrode collectors. The negative electrode plate has an adiabatic plate attached to the surface of a non-coated area of the negative electrode collector that is opposite the surface to which the negative electrode tab is attached. This construction improves battery stability and prevents short circuits caused either by heat generated during overcharging or by an internal short circuit.

A stacked energy storage device (ESD) has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Variable volume containment may be used to control the inter-electrode spacing within each cell segment. In some embodiments, one or more dynamic flexible gaskets may be included in each cell segment to seal the electrolyte within the cell segment and to deform in preferred directions. In some embodiments, hard stops may set the inter-electrode spacing of the ESD.

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.

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.

A gasket 20; 40; 80 for use in a starved electrolyte bipolar battery comprises a structural part 27; 44; 82 in the shape of a frame having an upper surface 1 and a lower surface 2, and at least one channel 23, 24; 83, 84 to permit gas passage through the gasket. The structural part is made from a first material having hydrophobic properties. The gasket 20; 40; 80 further comprises at least a first sealing surface 30; 47; 91 arranged in a closed loop projecting from the upper surface 1, and at least a second sealing surface 30; 47; 92 arranged in a closed loop projecting from the lower surface 2. The first and the second sealing surfaces are provided on at least one sealing part 26; 41, 41; 81, are made from a second material, and the first material of the structural part 27; 44; 82 has a higher elastic modulus than an elastic modulus of the second material of the sealing parts 26; 41, 42; 81. A starved electrolyte bipolar battery and a method for manufacturing a gasket are also disclosed.

A stacked energy storage device (ESD) has at least two conductive substrates arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Each active material electrode may have a plurality of folded sections and planar sections to increase the ESD capacity, for example, by increasing number of interfaces within each cell segment.

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.

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.

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

Provided is a bipolar secondary cell comprised of first and second bipolar electrodes and a separator. The first and second bipolar electrodes are provided with a power collecting element composed of a first resin as a base material and a conductive resin layer; a positive-electrode active material layer formed on one surface of the power collecting element; and a negative-electrode active material layer formed on the other surface of the power collecting element. The separator is disposed between the first and second bipolar electrodes and composed of a second resin as a base material, and holds electrolyte to form an electrolyte layer. The bipolar secondary cell is comprised of a power generating element provided with an electric cell layer composed of 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. The melting point of the first resin is not more than that of the second resin. The peripheral edges of the power collecting elements of the first and second bipolar electrodes are fusion-bonded to the peripheral edge of the separator, to seal the outer periphery of the electric cell layer.

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.

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.

An all-solid-state secondary battery, including: a solid electrolyte layer; a positive electrode layer including a positive electrode active material layer and a first current collector layer; a negative electrode layer including a second current collector layer, the positive electrode layer and the negative electrode layer sandwiching the solid electrolyte layer; and external electrodes connected respectively to the first current collector layer and the second current collector layer, wherein the positive electrode active material layer is formed of an olivine-type active material, wherein the solid electrolyte layer is formed of a phosphate having a NASICON-type structure, and wherein the solid electrolyte layer contains particulate precipitate having an olivine-type crystal structure that includes a same element as an element forming the positive electrode active material layer.

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.

The present invention is drawn to a high power electrochemical energy storage device in a bipolar configuration, comprising at least n stackable cells in bipolar configuration wherein subgroups of m cells are electronically monitored. The storage cells have a lithium ion insertion anode and a lithium ion insertion cathode, a separator, an electrolyte system, and a leak-proof seal structure. 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 casing for a lithium bipolar electrochemical battery including a bipolar element. The casing includes a composite material including a matrix and at least one porous reinforcement, the matrix of which includes at least one hardened polymer impregnating the at least one porous reinforcement, wherein the at least one porous reinforcement and the at least one hardened polymer encase the bipolar element and maintain a determined pressure on either side of the bipolar element to maintain a determined contact between its constituents.

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.

A multilayer conductive film includes a layer 1 including a conductive material containing a polymer material 1 having an alicyclic structure and conductive particles 1 and a layer 2 including a material having durability against positive electrode potential. The multilayer conductive film has stability in an equilibrium potential environment in a negative electrode and stability in an equilibrium potential environment in a positive electrode, has low electric resistance per unit area in the thickness direction, and has excellent barrier properties for a solvent of an electrolytic solution. A battery including a current collector employing the multilayer conductive film can achieve both weight reduction and durability.

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.