Disclosed are novel methods and techniques for introducing liquefied gas solvents into electrochemical devices. Unlike conventional electrolytes, the disclosed electrolytes are based on liquefied gas solvents mixed with various salts, referred to as liquefied gas electrolytes. The disclosed liquefied gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high-pressure solvent properties. Non-limiting examples of a class of liquefied gases that can be used as solvents for electrolytes include hydrofluorocarbons, and in particular include fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane.

Provided is a no-liquid cell-core for a lithium slurry battery. The no-liquid cell-core comprises multiple positive electrode pieces and negative electrode pieces overlapping alternately. The positive electrode piece comprises an electric-conductive cathode layer and a cathode surface current-collecting layer, wherein the electric-conductive cathode layer contains a part or all of the electric-conductive cathode particles in accumulated state without adhesive bonding, and the cathode surface current-collecting layer is set on the surface of the electric-conductive cathode layer and contacted with it tightly. The negative electrode piece comprises an electric-conductive lithium-intercalatable anode layer which is a lithium-containing metal body and/or a layer containing a part or all of electric-conductive lithium-intercalatable anode particles in accumulated state without adhesive bonding. The peripheral edges of the positive electrode piece and/or the negative electrode piece are insulated and sealed. A lithium slurry battery module containing the no-liquid cell-core is also provided.

A changeable cartridge for a hearing device docking station, the changeable cartridge having a flexible waste reservoir adapted to receive waste products from hearing device fuel cell power packs, and a flexible fuel reservoir adapted to hold and provide fuel to hearing device fuel cell power packs. The present invention further relates to a hearing device docking station and a hearing device docking station assembly.

An apparatus for enhancing electrolyte wetting in a rechargeable battery, which can improve an electrolyte wetting dispersion and enhancing electrolyte wetting in the rechargeable battery by vacuating gases trapped in an electrode assembly by injecting an electrolyte into the electrode assembly and pushing the rechargeable battery, and an electrolyte wetting enhancing method utilizing the same. The electrolyte wetting enhancing apparatus includes a chamber having an internal space; a battery fixing unit fixed in the internal space of the chamber and including a plurality of rechargeable batteries mounted therein; and a pushing member pushing opposite side surfaces of the plurality of rechargeable batteries. The pushing member pushes the plurality of rechargeable batteries to enhance electrolyte wetting into an electrode assembly including the plurality of rechargeable batteries into which the electrolyte is injected.

A battery includes an electrode assembly including a positive electrode sheet, a separation membrane, and a negative electrode sheet, at least one cover member surrounding at least a part of an outermost region of the electrode assembly, and exterior material accommodating the electrode assembly and the at least one cover member. The at least one cover member has at least a partial area that overlaps and is fixed to the exterior material, and includes a plurality of air gaps permitting impregnation of the electrode assembly by an electrolyte. An electronic device includes a housing, a display accommodated in the housing and having at least part exposed outside the housing, a memory disposed in the housing, a battery accommodated in the housing, and a processor electrically connected to the display, the memory, and the battery. Other various embodiments as understood from the specification are possible.

A method is performed to produce a film-covered battery in which electrode tabs extend out from joining surfaces on a first side of lamination films, in which a seal line is formed along the first side and traversing the electrode tabs. Pressure and/or heat is applied only to tab regions of the seal line using tab-region heat blocks, and then pressure and/or heat is applied only to non-tab regions using non-tab-region heat blocks.

A method for lithiation of an electrode includes providing a roll including an electrode to be lithiated, providing a piece of lithium metal with predetermined weight attached to a conductive material, attaching the conductive material to a current collector of the electrode to be lithiated or to a metal tab connected to or from the electrode to be lithiated, placing the roll, the piece of lithium, and the conductive material in a container, and filling the container with an electrolyte containing a lithium salt.

Disclosed is a secondary battery, which can minimize occurrence of a short-circuit between a cap plate and an electrode assembly while maximizing the size of an electrolyte injection hole of an inner case. The secondary battery includes at least one electrode assembly, an insulating inner case accommodating the electrode assembly, an outer case accommodating the electrode assembly and the inner case, and a cap plate sealing an opening of the outer case, wherein the inner case has a top surface corresponding to the cap plate and an injection hole for electrolyte injection located in the top surface.

A refuelable electrochemical battery is provided that features three phases of operation that repeat cyclically. In an intake phase a mixture of electrochemically active particles or pellets (e.g., aluminum pellets) and a suitable electrolyte (e.g., sodium hydroxide, potassium hydroxide) are fed into a cavity or chamber. In a power phase the resulting electrochemical reaction produces electrical energy. The particles are mechanically combined or collected to form one electrode, while a gas-diffusion membrane permeable by oxygen is another electrode. During the exhaust phase, a piston forces the residue of the reaction from the cavity in order to prepare for the next cycle of operation.

A filling device is provided, including a pump and a liquid transferring handle. The liquid transferring handle includes a grip portion, an inlet portion, an outlet portion which is in communication with the inlet portion, a channel which is in communication between the inlet portion and the outlet portion, and a window through which an interior of the channel is viewable. The inlet portion is detachably connected and in communication with the pump.