Abstract:
The present invention provides a terminal assembly, and storage batteries comprising a terminal assembly, wherein the terminal assembly comprises a conductive cup-shaped member comprising a terminal wall in electric communication with a terminal of the electrochemical cell when the terminal wall is in contact with the terminal; a sidewall; and a rim separated from the terminal wall by the sidewall; and a bipolar endplate having first and second surfaces coplanar with the terminal wall and joining to the rim at the first surface, the joining enabling bi-directional uniform current flow through the cup-shaped member between the terminal and the endplate when the terminal wall is in contact with the terminal, the endplate having an electrochemically active region comprising a first surface area enclosed by the rim and a remaining second surface area outside an outer periphery of the rim, the first and second surface areas being substantially equal.
Abstract:
The present invention provides a bipolar electrode that is useful in zinc-halide electrochemical cells or battery stacks. The bipolar electrode comprises a titanium bipolar electrode plate wherein a cathode assembly is disposed on a front surface of the electrode plate. The cathode assembly comprises a titanium cathode cage, a separator, and carbon material, wherein the cathode cage holds the carbon material in electrical communication with the front surface of the electrode plate.
Abstract:
La présente invention concerne un compartiment anodique pour batteries lithium ou sodium rechargeables comprenant: -un électrolyte solide; -un collecteur déposé sur l'électrolyte solide; et -une matière active en lithium métal ou en sodium métal que l'on a fait croître entre l'électrolyte solide et le collecteur afin de former avec le collecteur une électrode en lithium métal ou en sodium métal, dans lequel le collecteur est en un alliage amorphe. Elle concerne également un procédé de fabrication d'untel compartiment anodique et une batterie comprenant ce compartiment anodique.
Abstract:
A battery core includes an anode electrode collector and a cathode current collector. The battery core is created by defining an anode solution cavity on an anode electrode collector; defining a cathode solution cavity on a cathode electrode collector; depositing an anode solution into the anode solution cavity; depositing a cathode solution into the cathode solution cavity; curing the anode solution within the anode solution cavity; and curing the cathode solution within the cathode solution cavity. The anode electrode collector and the cathode current collector may be combined in a sandwich configuration and may be separated by one or more separators.
Abstract:
This present invention describes the processing steps for constructing a rechargeable oxide-ion battery (ROB) cell using a cell membrane assembly (40) and a hollow metal housing structure (30) wherein assembly steps include: a) forming a membrane assembly (40) of air electrode (20), metal electrode (24) and electrolyte (22) therebetween; b) sealing the membrane assembly (40) to a surrounding frame (26); c) filling the hollow metal housing structure (30) with active material (32); d) forming electrical contact between the framed membrane assembly and the filled housing structure; and e) joining the framed membrane assembly and the active housing structure to form a ROB cell. This invention also describes the processing steps for assembling a ROB stack using the constructed cells including: f) installing cell-to-cell current collector (58) between the air electrode (20') of a first ROB cell (80), and the central section of the bottom surface (70) of the metal housing structure (30') of a second successive ROB cell (82); and g) forming insulation seal (72) between the top surface (74) of the picture frame of the first ROB cell and the bottom peripheral section (76) of the metal housing structure of the second successive ROB cell
Abstract:
A thin printed flexible electrochemical cell with a high moisture and oxygen barrier polymer film sealed and folded package featuring a printed cathode deposited on a highly conductive carbon printed cathode collector with a zinc foil anode or printed anode placed adjacent to the cathode. After the cell components are added to the special laminated polymer substrate, the web is processed automatically on a modified high-speed commercial horizontal pouch filling machine to complete the cell assembly process. In this process a starch coated paper separator layer may be inserted over the anode and the cathode, and then the aqueous electrolyte solution is added to the cell. To complete the process, all four edges of the cell are heat sealed to confine the cell components within the cell cavity and each cell is trimmed off the continuous web.
Abstract:
An electrochemical cell for batteries comprising one or more pairs of electrodes (6). The first electrode is comprised of a flexible electrically insulating and ion conducting envelope (5) which contains a flexible conducting substrate (1). The flexible conductor (1) can be made of a conductive material in the form of fabric or grid, inserted into an active material in granular or powder form (2). The second electrode is also a flexible electrically insulating envelope (5) containing an electrical conductor (1) inserted into a layer of an electrochemically complementary active material. The cell also contains a means for applying pressure (4) to the assembly of electrodes, the membrane separator, and the counterelectrodes so as to maintain contact between the active material particles and the conductor. The assembly also contains a suitable electrolyte; electrode connections are provided from each of the envelopes.
Abstract:
The present invention provides an aqueous electrolyte for use in rechargeable zinc-halide storage batteries that possesses improved stability and durability and improves zinc-halide battery performance. One aspect of the present invention provides an electrolyte for use in a secondary zinc bromine electrochemical cell comprising from about 30 wt% to about 40 wt% of ZnBr2 by weight of the electrolyte; from about 5 wt% to about 15 wt% of KBr; from about 5 wt% to about 15 wt% of KCl; and one or more quaternary ammonium agents, wherein the electrolyte comprises from about 0.5 wt% to about 10 wt% of the one or more quaternary ammonium agents.
Abstract:
Embodiments of the invention describe energy storage devices, porous electrodes, and methods of formation. In an embodiment, an energy storage device includes a porous structure containing multiple main channels that extend into an electrically conductive structure at an acute angle. In an embodiment, an energy storage device includes a porous structure containing an array of V-groove or pyramid recesses.