There is provided a use, in an electrolyte for a battery, of an additive which comprises at least one organocatalyst. Also, there is provided a method of preventing the contact between the anode and residual water in a battery and/or reducing the level of gas in a battery. Moreover, there is provided electrolyte for a battery, comprising an additive which comprises at least one organocatalyst. Moreover, there is provided a battery comprising an electrolyte which comprises an additive which comprises at least one organocatalyst.

An inventive, new system that measures gas composition and pressure in the headspace of an aqueous electrolyte battery is described. The system includes a microcontroller that can use the composition and pressure information to connect a third electrode to either the anode(s) or the cathode(s) in order to balance the state of charge between the two. Results have shown that such a system can control the gas pressure inside a sealed flooded aqueous electrolyte battery to remain below 20 kPa (3 psi) and greatly extend the useable life of the battery.

Electrochemical cells with a protective film that is permeable to hydrogen, or that include a catalyst that facilitates formation of mobile hydrogen species, that promotes sequestration or gettering of hydrogen or oxygen, and/or that facilitates conversion of hydrogen or oxygen to H.sub.2O, are disclosed.

Provided is a gas adsorption sheet for a secondary battery, which contains gas adsorbent particles excellent in gas adsorption property, and allows the gas adsorption performance of the gas adsorbent particles to be sufficiently exhibited. According to one embodiment of the present invention, there is provided a gas adsorption sheet for a secondary battery, including: a heat-resistant base material; and a gas adsorption layer arranged on at least one surface of the heat-resistant base material, wherein the gas adsorption layer contains: a binder resin; and gas adsorbent particles each of which is formed of an inorganic porous material having pores, and is capable of adsorbing a gas.

A vent cap assembly for recombining water for a battery includes a cylindrical base having an upper portion and a lower portion. The lower portion configured to be inserted into a vent port. A cap encloses the cylindrical base. A catalyst component is received in the base configured to hydronate hydrogen and oxygen to water.

A lithium ion battery includes an electrolyte maintained in a separator, the separator having two sides; a negative electrode of lithium titanate (Li.sub.4Ti.sub.5O.sub.12) disposed on one side of the separator; a negative current collector associated with the negative electrode; a positive electrode disposed on an opposite side of the separator; and a positive current collector associated with the positive electrode. The lithium ion battery further includes gas traps to trap gases in the battery, wherein the gas traps include titanium diboride (TiB.sub.2) nanotubes. A method includes providing the titanium diboride nanotubes, carbon nanotubes, carbon fibers, and/or graphene as gas traps in a lithium ion battery having a negative electrode of lithium titanate.

Provided is a catalyst device for a lead-acid battery, the catalyst device being capable of reducing gas release from an electrolyte solution and a decrease in electrolyte solution due to the leakage, thus providing a lead-acid battery having a long life, and being capable of ensuring safety even in excessive flow of gas. Also provided is a lead-acid battery including the catalyst device. A catalyst device for a lead-acid battery, including: a catalyst layer including a catalyst to accelerate a reaction for generating water or water vapor from oxygen and hydrogen; and a porous membrane including thermoplastic resin having a melting point or a glass transition temperature of 160 C. or less, and wherein at least one surface of the catalyst layer is in contact with the porous membrane, and the porous membrane has a planar size being equal to or greater than that of the catalyst layer. Also a lead-acid battery including the catalyst device.

A battery cell having an anode and a cathode with a catalyzed separator interposed therebetween, and sealed within a cell case is described. The catalyzed separator is a substrate having a catalyzed coating arranged thereon. The catalyzed coating includes a bimetallic catalyst arranged on a support material. The bimetallic catalyst includes rhodium or ruthenium and a second transition metal. Lithium in zeolite functions as a catalyst promoter to accelerate a hydroformylation reaction.

The present invention relates to a protective film for solid-state batteries, which is a protective film arranged to cover a heat seal part of a solid-state battery including a battery element having a solid electrolyte, a packaging material housing the battery element, the heat seal part being disposed to a peripheral portion of the packaging material, and which contains a hydrogen sulfide adsorbent.

Provided are a box, a battery, and an electric device. The box includes an electrical chamber, a collection chamber, an isolation component, and a processing device. The electrical chamber is configured to accommodate multiple battery cells, wherein at least one battery cell among multiple battery cells includes a pressure relief mechanism; The collection chamber is configured to collect emissions from the battery cells arranged with the pressure relief mechanism when the pressure relief mechanism is actuated; the isolation component is configured to isolate the electrical chamber and the collection chamber; and the isolation component is provided with a first through-hole, wherein the emissions can enter the collection chamber through the first through-hole. The processing device is arranged at the first through-hole and configured to treat the emissions to reduce a temperature and/or concentration of combustible material in the emissions.