The invention relates to an accumulator having a plurality of electrode plates which are adjacently arranged and form at least one electrode plate stack in the form of a block, wherein each electrode plate comprises a frame having a grid arranged therein and wherein at least the grid is filled with an active mass, and wherein each electrode plate comprises at least one connecting lug protruding beyond the frame, wherein the connecting lugs of same-polarity electrode plates are arranged adjacent to one another in a row, wherein the connecting lugs adjacently arranged in a row are materially bonded together electrically and mechanically into a connecting lug block by at least one weld or solder point arranged between the connecting lugs. The invention furthermore relates to a method for manufacturing an accumulator.

The invention relates to an accumulator having a plurality of electrode plates which are adjacently arranged and form at least one electrode plate stack in the form of a block, wherein each electrode plate comprises a frame having a grid arranged therein and wherein at least the grid is filled with an active mass, and wherein each electrode plate comprises at least one connecting lug protruding beyond the frame, wherein the connecting lugs of same-polarity electrode plates are arranged adjacent to one another in a row, wherein the connecting lugs adjacently arranged in a row are materially bonded together electrically and mechanically into a connecting lug block by at least one weld or solder point arranged between the connecting lugs. The invention furthermore relates to a method for manufacturing an accumulator.

A method for recycling lead-containing waste comprises: (a) dissolving the lead-containing waste in an aqueous solution of a first acid to form a solution of a first lead salt; (b) adding a second acid to the solution of the first lead salt to form a lead-depleted solution and a precipitate of a second lead salt; and (c) converting the precipitate of the second lead salt into leady oxide, wherein the first lead salt has a higher solubility in water than the second lead salt. The method may be used for recycling spent lead-acid battery paste.

Disclosed is a lead acid battery having a negative electrode plate and a positive electrode plate, each plate formed of a lead-antimony grid coated with an active material. A separator is disposed between the first and second electrode plate faces and an electrolyte solution immersing the negative electrode plate, the positive electrode plate the separator. At least one of the lead-antimony electrode grids, the separator or the electrolyte solution contains TiO.sub.2, an amount sufficient to suppress the migration of antimony from the positive electrode plate to the negative electrode plate.

Disclosed is a lead acid battery having a negative electrode plate and a positive electrode plate, each plate formed of a lead-antimony grid coated with an active material. A separator is disposed between the first and second electrode plate faces and an electrolyte solution immersing the negative electrode plate, the positive electrode plate the separator. At least one of the lead-antimony electrode grids, the separator or the electrolyte solution contains TiO.sub.2, an amount sufficient to suppress the migration of antimony from the positive electrode plate to the negative electrode plate.

A new type of battery electrode plate preparation method is described. The method can include the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The method can adopt the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body. The electrode plate can have a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the method can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and others.

A method of prolonging service life of an energy storage device such as a lithium-ion battery includes temporarily operating the battery at an elevated current density. Cycling of lithium-ion batteries at regular current densities results in the generation of lithium-metal dendrites at the surface of the anode, particularly in batteries where the anode is lithium metal. The lithium metal dendrites pose a threat to damage other components of the battery, such as separators, as well as causing an electrical short. Operating the battery in bursts at the elevated current density results in self-heating at the anode surface that merges adjacent lithium-metal dendrites and an overall smoothing of the anode surface. This method is also applicable to other alkali-metal-based batteries and chemistries.

A method of prolonging service life of an energy storage device such as a lithium-ion battery includes temporarily operating the battery at an elevated current density. Cycling of lithium-ion batteries at regular current densities results in the generation of lithium-metal dendrites at the surface of the anode, particularly in batteries where the anode is lithium metal. The lithium metal dendrites pose a threat to damage other components of the battery, such as separators, as well as causing an electrical short. Operating the battery in bursts at the elevated current density results in self-heating at the anode surface that merges adjacent lithium-metal dendrites and an overall smoothing of the anode surface. This method is also applicable to other alkali-metal-based batteries and chemistries.

Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.

In one embodiment, a lead strip caster for battery grids includes a ladle, a nozzle, and a pair of rollers. The lead strip caster produces a continuous lead strip for use as battery positive plate grids. The ladle has an inlet to receive molten lead and has an outlet. The nozzle has at least one passage that communicates with the outlet of the ladle in order to receive molten lead from the ladle. The first roller is situated at a first exterior side of the nozzle. The first roller rotates via a first driver. The second roller is situated at a second exterior side of the nozzle. The second roller rotates via a second driver.