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 ZnBr.sub.2 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.

A bipolar storage battery is described in which, even when growth occurs in a positive electrode due to corrosion caused by sulfuric acid contained in an electrolytic solution, the electrolytic solution has difficulty penetrating an interface between the positive electrode and an adhesive and battery performance is hard to decrease. The bipolar storage battery includes a bipolar electrode including a positive electrode, a negative electrode, and a bipolar plate in which the positive electrode is provided on one surface and the negative electrode is provided on the other surface. The bipolar electrode includes a covering member configured to cover a peripheral part of an opposite surface of the positive electrode in close contact with the peripheral part, the opposite surface being opposite to a surface, of the positive electrode, bonded to the bipolar plate.

A bipolar battery assembly having: a) a plurality of electrode plates stacked together to form an electrode plate stack; b) a liquid electrolyte located between each pair of the electrode plates; and c) one or more channels passing transversely through the plurality of electrode plates and the liquid electrolyte; and wherein the one or more channels include one or more seals therein to seal the one or more channels from the liquid electrolyte.

In a management method of a secondary battery of one embodiment, a charge pattern in charge planned to be executed is set based on estimation data including an estimation result of an internal state of the secondary battery based on a measurement result of an electric current and a voltage of the secondary battery, target data including a target time for charging the secondary battery in the charge planned to be executed, and relation data indicative a relation of each of the internal state of the secondary battery and a charge condition of the secondary battery to a deterioration rate of the secondary battery. The charge pattern is set to be a charge pattern in which the deterioration rate does not exceed a threshold and the secondary battery is charged during the target time.

An electricity-storage module includes an electrode stacked body and a sealing body. A negative terminal electrode is disposed at one end of the electrode stacked body in a stacking direction such that a second surface is an inner side of the electrode stacked body. The sealing body includes first resin portions 21 which are joined to edge portions, and a second resin portion that is joined to the first resin portions 21 so as to surround the first resin portions from an outer side.

A power storage module including: a stacked body that includes electrodes stacked along a first direction; a sealing body that includes a first sealing portion joined to an edge portion of each of the electrodes, forms an inner space between the electrodes adjacent to each other, and seals the inner space; and an electrolytic solution that is stored in the inner space and includes an alkali solution. The electrodes include bipolar electrodes, and a negative terminal electrode. The power storage module includes surplus spaces different from the inner space on a route of an alkali creep phenomenon in which the electrolytic solution reaches the outside from the inner space through the negative terminal electrode.

The present disclosure provides a method for forming a bipolar current collector. The method may include heating a first current collector material having a first melting point to form a molten metal or metal alloy and disposing the molten metal or metal alloy on one or more surfaces of a second current collector material having a second melting point greater than the first melting point to form the bipolar current collector. The molten metal or metal alloy may be disposed on the one or more surfaces of the second current collector material using a twin-roll casting method or a spraying method. The bipolar current collector may include a first current collector including the first current collector material, a second current collector including the second current collector material, and an inter-diffusion layer that connects the first current collector and the second current collector.

Energy storage devices, battery cells, and batteries of the present technology may include a first cell and a second cell disposed adjacent the first cell. The devices may include a stacked current collector coupled between the first cell and the second cell. The current collector may include a grid or matrix, and may include a combination of conductive and insulative materials.

A solid-state battery, in which a battery case and electrode terminals are integrally formed by resin molding, includes a solid-state battery laminate including a cathode having a cathode layer on a first current collector, an anode having an anode layer on a second current collector, a plurality of solid electrolytes located between the cathode and the anode, and a plurality of bipolar electrodes, each bipolar electrode being located between adjacent solid electrolytes and including another cathode layer and another anode layer on both surfaces of a third current collector, a cathode terminal plate, an anode terminal plate, and a resin case encapsulating the solid-state battery laminate and the cathode and anode terminal plates.

Provided is a solid-state battery having a bipolar electrode plate and capable of reducing the lamination space factor of a solid electrolyte and reducing electrical resistivity. The solid-state battery includes: a laminate including a positive electrode plate, at least one bipolar electrode plate, and a negative electrode plate that are laminated; and a solid electrolyte layer formed on a lamination surface of the at least bipolar electrode plate.