The present disclosure provides a double-vacuum four-cavity hermeticity detecting method and machine for a square housing battery. The method may include a loading device, four cavity devices, four cavity cover devices, four load transferring devices, two vacuum devices, a detecting device, and a discharging device, the cavity devices and the cavity cover devices may make a sealed cavity, and each of the vacuum devices predetermine two sealed cavities. While operating at the same time, four sealed cavities may be loaded for 8 s, vacuumed for 10 s and detected for a hermeticity for 5 s in a total of 15 s, and discharged for 8 s, a cycle time may be shortened to 8 s and a production period may be shortened to 32 s, and a productivity of a hermeticity detection may be improved to 15 PPM according to two batteries per cavity.

A method for producing silver nanowires, containing reduction-precipitating silver in the form of wire in an alcohol solvent having dissolved therein a silver compound, the deposition being performed in the alcohol solvent having dissolved therein a chloride, a bromide, an alkali metal hydroxide, an aluminum salt, and an organic protective agent, the molar ratio Al/OH of the total Al amount of the aluminum salt dissolved in the solvent and the total hydroxide ion amount of the alkali metal hydroxide dissolved therein being from 0.01 to 0.40, the molar ratio OH/Ag of the total hydroxide ion amount of the alkali metal hydroxide dissolved in the solvent and the total Ag amount of the silver compound dissolved therein being from 0.005 to 0.50.

The invention is directed towards an electrochemically active cathode material. The electrochemically active cathode includes beta-delithiated layered nickel oxide. The beta-delithiated layered nickel oxide has an X-ray diffraction pattern. The X-ray diffraction pattern of the beta-delithiated layered nickel oxide includes a first peak from about 14.9?2? to about 16.0?2?; a second peak from about 21.3?2? to about 22.7?2?; a third peak from about 37.1?2? to about 37.4?2?; a fourth peak from about 43.2?2? to about 44.0?2?; a fifth peak from about 59.6?2? to about 60.6?2?; and a sixth peak from about 65.4?2? to about 65.9?2?.

The invention is directed towards a battery. The battery includes a cathode, an anode, a separator between the cathode and the anode, and an electrolyte. The cathode includes a conductive additive and an electrochemically active cathode material. The electrochemically active cathode material includes a beta-delithiated layered nickel oxide. The beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is Li.sub.xA.sub.yNi.sub.1+a?zM.sub.zO.sub.2.nH.sub.2O where x is from about 0.02 to about 0.20; y is from about 0.03 to about 0.20; a is from about 0 to about 0.2; z is from about 0 to about 0.2; and n is from about 0 to about 1. Within the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. Within the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof. The anode includes an electrochemically active anode material. The electrochemically active anode material includes zinc, zinc alloy, and any combination thereof.

A method for producing silver nanowires, containing reduction-precipitating silver in the form of wire in an alcohol solvent having dissolved therein a silver compound, the deposition being performed in the alcohol solvent having dissolved therein a chloride, a bromide, an alkali metal hydroxide, an aluminum salt, and an organic protective agent, the molar ratio Al/OH of the total Al amount of the aluminum salt dissolved in the solvent and the total hydroxide ion amount of the alkali metal hydroxide dissolved therein being from 0.01 to 0.40, the molar ratio OH/Ag of the total hydroxide ion amount of the alkali metal hydroxide dissolved in the solvent and the total Ag amount of the silver compound dissolved therein being from 0.005 to 0.50.

The invention is directed towards a battery. The battery includes a cathode, an anode, a separator between the cathode and the anode, and an electrolyte. The cathode includes a conductive additive and an electrochemically active cathode material. The electrochemically active cathode material includes a beta-delithiated layered nickel oxide. The beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is Li.sub.xA.sub.yNi.sub.1+a?zM.sub.zO.sub.2.nH.sub.2O where x is from about 0.02 to about 0.20; y is from about 0.03 to about 0.20; a is from about 0 to about 0.2; z is from about 0 to about 0.2; and n is from about 0 to about 1. Within the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. Within the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof. The anode includes an electrochemically active anode material. The electrochemically active anode material includes zinc, zinc alloy, and any combination thereof.

A sealed battery manufacturing method includes inserting a supply nozzle (120) into an opening (33) that is opened outwardly, the opening (33) being formed in a battery container (33); and introducing a detection gas (He) into the battery container in such a manner that injection of the detection gas from the supply nozzle (120) is started at a pressure smaller than a predetermined injection pressure, and then an injection pressure of the detection gas (He) is increased by stages until the injection pressure of the detection gas (He) reaches the predetermined injection pressure.

A method for depassivation of a lithium-thionyl battery includes applying at least one current test load (LAST) (101) to an electrode of the battery (10), wherein at least one of a shape, a magnitude or points in time of the application of the at least one current test load (LAST) occurs dependent on a measurement of a response signal (u(t), du(t) on the battery (10), and energy of the at least one current test load (LAST) is drawn from the battery (10), comparing the response signal (u(t), du(t) of the battery (10) arising from application of the at least one current test load (LAST) to at least one predefined criterion (103), and establishing an operating state (12) or issuing an error message depending on satisfaction of the at least one predefined criterion (103).

A battery testing assembly for testing a charge of a battery includes a belt that is selectively positioned between a positive terminal and a negative terminal of a battery. The belt is comprised of an electrically conductive material to complete a circuit between the positive and negative terminals. A contact is coupled to the belt to be placed in electrical communication with the negative terminal of the battery. A light emitter is coupled to the belt to be placed in electrical communication with the positive terminal of the battery. The light emitter emits light when the belt is positioned between the negative and positive terminals thereby facilitating a charge of the battery to be checked.

The present disclosure provides a double-vacuum four-cavity hermeticity detecting method and machine for a square housing battery. The method may include a loading device, four cavity devices, four cavity cover devices, four load transferring devices, two vacuum devices, a detecting device, and a discharging device, the cavity devices and the cavity cover devices may make a sealed cavity, and each of the vacuum devices predetermine two sealed cavities. While operating at the same time, four sealed cavities may be loaded for 8 s, vacuumed for 10 s and detected for a hermeticity for 5 s in a total of 15 s, and discharged for 8 s, a cycle time may be shortened to 8 s and a production period may be shortened to 32 s, and a productivity of a hermeticity detection may be improved to 15 PPM according to two batteries per cavity.