A battery is provided which includes a first power generating element, a second power generating element, and a first adhesion layer adhering the first power generating element to the second power generating element. A first positive electrode collector of the first power generating element and a second negative electrode collector of the second power generating element face each other with (i.e., via) the first adhesion layer. Between the first positive electrode collector and the second negative electrode collector, the first adhesion layer is disposed in a region forming a first positive electrode active material layer or a region forming a second negative electrode active material layer, whichever is smaller. The first positive electrode collector and the second negative electrode collector are not in contact with each other in a region in which the first positive electrode active material layer and the second negative electrode active material layer face each other.

A secondary battery is disclosed. The secondary battery has a bipolar electrode, an electrolyte layer, and a porous insulator. The bipolar layer includes a positive electrode layer formed on one surface of a collector foil and a negative electrode formed on the other surface of the collector foil. The electrolyte layer is famed at least on a surface of at least one of the positive electrode layer and the negative electrode layer. The porous insulator is formed to a lateral surface of at least one of the positive electrode layer, the negative electrode layer, and the electrolyte layer. The electrolyte layer is laminated by at least one layer relative to the bipolar electrode to configure a bipolar battery. The porous insulator also includes an inorganic particle and a reactive agent for lowering a fluidity of the liquid electrolyte bleeding from the electrolyte layer.

A power storage module includes an electrode laminate having a plurality of bipolar electrodes, a positive terminal electrode, and a negative terminal electrode, a sealing portion, and a buffer region formation member that forms a sealed buffer region. Each bipolar electrode has a current collector, a positive electrode active material layer, and a negative electrode active material layer. Positive terminal electrode has a positive electrode current collector foil and positive electrode active material layer. Negative terminal electrode has a negative electrode current collector foil and negative electrode active material layer. Sealing portion seals a region formed between a positive electrode uncoated portion and a negative electrode uncoated portion in a state where becomes a pressure within region is lower than atmospheric pressure. Buffer region formation member forms a buffer region at a position overlapping region in a stacking direction.

A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length L.sub.E of the electrode active material layer, traces a first vertical end surface plot, E.sub.VP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length L.sub.C of the counter-electrode active material layer, traces a first vertical end surface plot, CE.sub.VP1, wherein for at least 60% of the length L.sub.c of the first counter-electrode active material layer (i) the absolute value of a separation distance, S.sub.Z1, between the plots E.sub.VP1 and CE.sub.VP1 measured in the vertical direction is 1000 ?m?|S.sub.Z1|?5 ?m.

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 power storage module includes a plurality of bipolar electrodes, a positive terminal electrode, a negative terminal electrode, a positive electrode current collector plate, a negative electrode current collector plate, a positive electrode side short circuit member electrically connecting the positive terminal electrode and the positive electrode current collector plate, and a negative electrode side short circuit member electrically connecting the negative terminal electrode and the negative electrode current collector plate. Positive electrode current collector plate has a positive electrode side voltage detection portion, and positive electrode side short circuit member electrically connects positive terminal electrode and positive electrode side voltage detection portion. Negative electrode current collector plate has a negative electrode side voltage detection portion, and negative electrode side short circuit member electrically connects negative terminal electrode and negative electrode side voltage detection portion.

Infiltration of an electrolyte solution into a through hole is prevented or minimized to suppress the occurrence of a liquid junction, so that battery performance is less likely to deteriorate, and the life is prolonged. A cell member includes a positive electrode, a negative electrode, and an electrolyte layer interposed therebetween. The cell member is stacked and disposed at an interval. A space forming member includes a substrate and a frame body. A through hole penetrates between a positive electrode side and a negative electrode side in the space forming member, and a conductor inserted into the through hole electrically connects them. A liquid junction prevention member is provided in a vicinity of an opening on the positive electrode side, a vicinity of an opening on the negative electrode side, or both.

A manufacturing method of a power storage module includes a stacking process of stacking a plurality of bipolar electrodes, a positive terminal electrode, and a negative terminal electrode, a sealing process of forming a sealing member that seals a space on a peripheral edge portion of each electrode in an electrode laminate such that sealing member is formed while holding a liquid injection member, an insulation inspection process of inspecting an insulation state between a positive electrode uncoated portion and a negative electrode uncoated portion, by applying a voltage to electrode laminate in a state where the inside of sealing member is depressurized from liquid injection member, a liquid injection process of supplying an electrolyte solution from liquid injection member into sealing member after the insulation inspection process, and a charging process of charging electrode laminate.

A battery includes a stacked arrangement of electrochemical cells. Each electrochemical cell is free of a cell housing and includes a bipolar plate having a substrate, a first active material layer formed on a first surface of the substrate, and a second active material layer formed on a second surface of the substrate. Each cell includes a solid electrolyte layer that encapsulates at least one of the active material layers, and an edge insulating device that is disposed between the peripheral edges of the substrates of each pair of adjacent cells. A support frame surrounds the cell stack and is configured to receive and support the outer peripheral edge of the edge insulating device of each cell.

An article having (a) one or more stacks of a plurality of electrode plates include: (i) one or more bipolar plates having a substrate having an anode on one surface and a cathode on an opposing surface; (ii) a separator and a liquid electrolyte located between each of the electrode plates; (b) a first end plate having a first end plate internal reinforcement structure, attached at an end of the one or more stacks; (c) a second end plate having a second end plate internal reinforcement structure, attached at an opposing end of the one or more stacks as the first end plate; wherein the first end plate and the second end plate reinforce the plurality of electrode plates during a charge cycle, a discharge cycle, or both the charge cycle and the discharge cycle.