Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung von Elektroden (14) für Bleiakkumulatoren (30), wobei eine hergestellte Elektrode (14) wenigstens ein oberes und/oder ein unteres Rahmenelement sowie einen sich von dem oberen bzw. dem unteren Rahmenelement (9, 10) fort ersteckenden gitterförmigen Bereich (12) aufweist, der eine Vielzahl von Öffnungen aufweist, wobei das obere und/oder das untere Rahmenelement (9, 10) eine größere Dicke (D) aufweist als der gitterförmige Bereich (12), mit den Schritten : a) Herstellen eines profilierten bandförmigen Rohlings (2) mittels eines Gießverfahrens, wobei nur mittels des Gießverfahrens der bandförmige Rohling (2) in wenigstens einem der Bereiche (3, 5, 7), die schließlich das obere bzw. das untere Rahmenelement (9, 10) sollen, einseitig mit einer größeren Dicke (D) ausgebildet wird als in Bereichen (4, 6), die schließlich den gitterförmigen Bereich (12) bilden sollen, b) Erzeugen des gitterförmigen Bereichs (12) mit den Öffnungen in einem darauffolgenden Streckmetallprozess. Die Erfindung betrifft ferner eine Anlage zur Herstellung von Elektroden für Bleiakkumulatoren, eine Elektrode sowie einen Bleiakkumulator.
Abstract:
A grid for a battery is disclosed. The battery grid includes an electrically conductive grid body having opposed top and bottom frame elements. At least one of the frame elements has a cross section with coined edges. The battery grid also includes a plurality of interconnecting electrically conductive grid elements spanning between the opposed top and bottom frame elements defining a grid pattern. Methods of forming a battery grid are also disclosed.
Abstract:
A multiply-conductive matrix (MCM) for a current collector/electrode and a method of making the MCM are disclosed. The MCM includes a frame, preferably including a lug, the frame preferably made from a reticulated polymer foam substrate, and a body preferably made from the same substrate. The specific surface area of the frame is greater than the specific surface area of the body, resulting in greater rigidity and strength of the frame when the body and frame are joined to form an assembled matrix. Electrically conductive material is applied to the matrix to form the current collector. Optionally, a bonding material is also applied. Electro-active paste is applied to current collector. The resulting MCM-based electrodes are ultra light and may be used as anode or cathodes in a lead-based battery, lithium ion battery, and nickel metal hydride battery for improved performance.
Abstract:
An electrode/separator assembly for use in an electrochemical cell includes a current collector; a porous composite electrode layer adhered to the current collector, said electrode layer comprising at least electroactive particles and a binder; and a porous composite separator layer comprising inorganic particles substantially uniformly distributed in a polymer matrix to form nanopores and having a pore volume fraction of at least 25%, wherein the separator layer is secured to the electrode layer by a solvent weld at the interface between the two layers, said weld comprising a mixture of the binder and the polymer. Methods of making and using the assembly are also described.
Abstract:
The invention includes a flexible pasted anode (100) comprising a flexible current collector and a paste comprising zinc particles and at least one block copolymer binder, wherein said flexible current collector and said paste form a unit. The invention includes primary cell (60) comprising the flexible pasted anode (100), a cathode (106), and electrolyte. The invention also includes an anode paste comprising zinc particles and at least one block copolymer, wherein said paste is suitable for use in an anode. The invention further includes a method of manufacturing zinc anode comprising combining zinc powder, block copolymer, and solvent to form a paste, depositing the paste onto a current collector, and drying the wet pasted anode, and a method of manufacturing a primary cell comprising: forming a flexible pasted zinc anode (100) to form a convoluted pasted zinc anode, inserting said convoluted pasted zinc anode into a cell container (104), and filling said container with electrolyte.
Abstract:
Lithium based electrochemical devices which contain at least two porous electrodes, which include expanded metal microgrids coated with active materials, with a porous ceramic separator therebetween in adherent contact with one electrode, and an ionically conductive organic adhesive on said separator in adherent contact with said second electrode. A non-aqueous electrolyte is soaked into the electrodes and the separator with the device contained in an enclosure with two external terminals.
Abstract:
The invention concerns a method for synthesising Li4Ti5O12, Li4Z beta Ti (5- beta )O12, OR Li (4- alpha ) Z alpha Ti5O12 particles preferably having spinel structure, wherein: beta is greater than 0 and not more than 0.5 (preferably having spinel structure); alpha represents a number greater than zero and not more than 0.33, Z representing a source of at least a metal selected among the group consisting of Mg, Nb, Al, Zr, Ni, Co. Said particles coated with carbon exhibit particularly interesting electrochemical properties as anode and/or cathode component of electrochemical generators.
Abstract translation:本发明涉及合成优选具有尖晶石结构的Li 4 Ti 5 O 12,Li 4 ZβTi(5-β)O 12,OR Li(4-α)ZαTi 5 O 12颗粒的方法,其中:β大于0且不大于0.5(优选具有 尖晶石结构); α表示大于零且不大于0.33的数,Z表示选自Mg,Nb,Al,Zr,Ni,Co中的至少一种金属的源。所述涂覆有碳的颗粒表现出特别有趣的电化学性质 作为电化学发生器的阳极和/或阴极组件。