Provided is a bi-polar electrode for a battery, wherein the bi-polar electrode comprises: (a) a current collector comprising a conductive material foil (e.g. metal foil) having a thickness from 10 nm to 100 μm and two opposed, parallel primary surfaces, wherein one or both of the primary surfaces is coated with a layer of graphene material having a thickness from 10 nm to 10 μm; and (b) a negative electrode layer and a positive electrode layer respectively disposed on the two sides of the current collector, each in physical contact with the layer of graphene material or directly with a primary surface of the conductive material foil (if not coated with a graphene material layer). Also provided is a battery comprising multiple (e.g. 2-300) bipolar electrodes internally connected in series. There can be multiple bi-polar electrodes that are connected in parallel.

A method of sealing together two elements of a bipolar battery, the method comprising: interposing an inductive heating element between the two elements; applying a current to the inductive heating element to generate localized heat to melt material in the vicinity of the heating element to seal the two elements together.

Provided are: a solid battery which has been sealed in an exterior material under a reduced pressure, wherein gas in the exterior material can be fully removed when depressurizing the inside of the exterior material; and a method of manufacturing the solid battery, the solid battery having a single cell having: a laminated body having a cathode layer, an anode layer, and an electrolyte layer disposed between the cathode layer and the anode layer; an insulating part disposed on an outer perimeter of the laminated body in a cross-sectional view of the laminated body in a direction orthogonal to a lamination direction thereof, and a pair of current collectors sandwiching the laminated body and the insulating part, wherein the single cell has been sealed in an exterior material under a reduced pressure; and the insulating part has vent holes.

There is provided a bipolar laminated all-solid-state lithium-ion rechargeable battery including bipolar electrodes and solid electrolyte layers that are alternately laminated. When viewed from a lamination direction of the battery, a current collector layer of each bipolar electrode has its outer edge inside the outer edge of a positive electrode layer and a negative electrode layer of the bipolar electrode. At least one of the positive electrode layer and the negative electrode layer of each bipolar electrode is provided with at least one electrical insulating portion in an outer edge region on the surface where it is in contact with the current collector layer of the bipolar electrode. When each bipolar electrode is viewed from the lamination direction, the perspective projection of the at least one electrical insulating portion configures the entire periphery of the outer edge. The bipolar electrodes and the solid electrolyte layers form a sinter-bonded body.

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 μm≥|S.sub.Z1|≥5 μm.

Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

The present invention provide a non-aqueous electrolyte for use in static or non-flowing rechargeable electrochemical cells or batteries, wherein the electrolyte comprises a first deep eutectic solvent comprises a zinc salt, a second deep eutectic solvent comprising one or more quaternary ammonium salts, and a hydrogen bond donor. Another aspect of the present invention also provides a non-flowing rechargeable electrochemical cell that employs the non-aqueous electrolyte of the present invention.

A wearable device having a leakage current preventing structure is provided. The wearable device includes a case having a structure which is electrically connected to a substrate and included in an internal space of the case and a slot formed in an upper surface of the case and communicating with the internal space, a battery arranged on the structure, a first electrode which is supported at one side of the structure and contacts one surface of the battery, a second electrode which is supported at the other side of the structure and contacts the other surface of the battery, and an insulation sheet that is inserted or removed through the slot and inserted between the battery and the first electrode or between the battery and the second electrode to block a leakage current of the battery.

An all solid secondary battery includes an electrode assembly, and a case accommodating the electrode assembly, wherein the electrode assembly includes a unit cell portion, an anode current collector portion, and a cathode current collector portion, the case includes first and second cases insulated from each other, the anode current collector portion contacts the first case, and the cathode current collector portion contacts the second case.

An electricity storage module includes: a laminate including a plurality of bipolar electrodes, each bipolar electrode including an electrode plate, a positive electrode, and a negative electrode; a frame body holding an edge portion of the electrode plate and including an opening that communicates with internal spaces; and a pressure regulating valve connected to the opening. Each internal space is provided between the bipolar electrodes. Each internal space accommodates an electrolytic solution. An exhaust port and a communication space are provided in the pressure regulating valve. The exhaust port is provided for exhausting gas to an external space. The communication space communicates with the exhaust port. The communication space includes a space portion positioned below a lower end of the exhaust port.