60results about "Semi-lead accumulators" patented technology

A nickel-metal hydride secondary battery comprising electrode group comprising positive electrode comprised mainly of nickel hydroxide, negative electrode comprised mainly of a hydrogen storage alloy, and separator being disposed between the positive electrode and the negative electrode, wherein the electrode group is sealed in battery casing, together with an alkali electrolyte liquid, wherein, in the battery, a W element and an Na element are present simultaneously. The nickel-metal hydride secondary battery of the present invention is advantageous not only in that it exhibits high utilization of the active material and excellent self-discharge characteristics in a high temperature storage as well as high charging efficiency in a high temperature environment, but also in that it has excellent large current discharge characteristics.

An electrochemical cell and its method of operation includes an electrolyte having a binary salt system of an alkali hydroxide and a second alkali salt. The anode, cathode, and electrolyte may be in the molten phase. The cell is operational for both storing electrical energy and as a source of electrical energy as part of an uninterruptible power system. The cell is particularly suited to store electrical energy produced by a renewable energy source.

A battery having a current collector constructed of carbon foam. The carbon foam includes a network of pores into which a chemically active material is disposed to create either a positive or negative plate for the battery. The carbon foam resists corrosion and exhibits a large amount of surface area. The invention includes a method for making the disclosed carbon foam current collector used in the battery.

A hybrid energy storage device has at least one lead-based positive electrode and at least one carbon-based negative electrode, a separator between the electrodes, a casing which will contain the electrodes and separator, and an acid electrolyte. The separator is gas permeable, and is capable of absorbing and entraining acid electrolyte. The separator has a finite capacity for absorption of acid electrolyte, and the quantity of acid electrolyte which is present in the cell is less than the finite capacity of the separator. Upon assembly of the cell, the casing is sealed, and there is no liquid acid electrolyte within the assembled cell.

The invention discloses a gel electrolyte of a power lead-acid storage battery, which comprises the following raw materials in percentage by weight: 40-46 percent of H2SO4, 0.2-0.5 percent of SiO2, 0.1-0.5 percent of SnSO4, 0.8-1.2 percent of Na2SO4, 0.01-0.15 percent of PEG (Polyethylene Glycol), 0.01-0.5 percent of PAM (Polyacrylamide) and 47-57 percent of deionized water. The invention also discloses a method for preparing the gel electrolyte of a lead-acid storage battery. The invention has lower silicon dioxide content compared with the traditional electrolyte and no larger change on gelatinous performance and thixotropy, the ohmic resistance of the storage battery prepared by the invention is about 50 percent lower than that of the storage battery made of the traditional electrolyte, and the charging performance is improved by 15 percent or so.

When a charge state of an auxiliary battery transitions to a first charge state, a charge/discharge controller executes a first process in which a first voltage is applied to an in-vehicle power supply unit to charge the in-vehicle power supply unit with a constant voltage. When the charge state of the auxiliary battery transitions to a second charge state, the charge/discharge controller executes a second process in which a second voltage is applied to the in-vehicle power supply unit, charging of the auxiliary battery is stopped, and the auxiliary battery is caused to discharge electricity to an electrical component load or the like. The charge/discharge controller repeats the first process and the second process until a charge state of a lead storage battery transitions to a third charge state.

A lead carbon battery includes an activated carbon anode comprising the active layer and a current collector, wherein the active layer is in electrical contact with the current collector; a lead oxide cathode that is in electrical contact with a cathode side current collector; an acid located in between the activated carbon anode and the cathode; and a casing encapsulating the activated carbon anode, the cathode, and the acid wherein the active layer includes greater than or equal to 85 weight percent of the activated carbon, 1 to 15 weight percent of a fibrillated poly(vinylidene fluoride), and 0 to 10 weight percent of an electrically conductive filler.

The present invention is related to hybrid capacitors specifically to PbO2/Activated Carbon hybrid ultracapacitors with an inorganic thixotropic-gelled-polymeric-electrolyte. The hybrid ultracapacitor of the present invention is simple to assemble, bereft of impurities, and can be charged/discharged rapidly with high faradaic efficiency.

The invention relates to the technical field of electrochemical energy storage equipment, and discloses an overlapped copper-acid storage battery. The overlapped copper-acid storage battery comprises a housing (1), an electrolyte (7), a negative electrode plate (5) and a partition plate (4); the electrolyte comprises a copper sulfate saturated aqueous solution; the current carrier of the negative electrode plate is a pure lead sheet or a copper sheet, wherein a metal layer resistant to dilute sulphuric acid is plated on the surface of the copper sheet; and a copper layer is plated on the surface of the current carrier of the negative electrode plate to be used as the negative electrode active substance. According to the copper-acid storage battery, copper is used to replace lead to be used as the negative electrode active substance; the mixed liquid of dilute sulphuric acid and copper sulfate is used as the electrolyte; the charging/discharging electrochemical reaction of the negative electrode plate only comprises the conversion of copper and the copper sulfate, so that the headache problem that the lead sulfate deposition in the negative electrode plate of a lead-acid storage battery is solved completely, and the service life of the copper-acid storage battery is greatly prolonged consequently.

A storage battery is provided comprising a positive electrode of lead, a negative electrode of palladium, and an electrolyte consisting of an aqueous solution of a sulfate salt. Upon charging, lead is converted to lead dioxide and atomic hydrogen is absorbed by the palladium. During discharge, lead dioxide is reduced to the plumbous state and hydrogen is oxidized to hydrogen ions.

The invention discloses a water system lithium-ion hybrid battery, and belongs to the technical field of hybrid batteries. The water system lithium-ion hybrid battery comprises a positive plate and a negative plate, the positive plate is composed of a positive current collector and a positive active substance, the negative plate is composed of a negative current collector and a negative active substance, and the positive current collector is plated with terne metal; the negative active substance is prepared from, by mass, 80-90% of lead sulfate, 0.05-0.15% of barium sulfate, 2-10% of binder, 1-10% of conducting agent and 0.1-0.5% of organic expanding agent. A positive pole of the hybrid battery is made of a lithium-ion battery positive pole material, a negative pole is made of a negative pole material of a lead storage battery, the energy density of the battery reaches 70 Wh/kg or more and is about twice that of the lead storage battery, the cycle life is larger than 1000 times, the cost is about 0.6 yuan/Wh and is slightly higher than that of the lead storage battery while remarkably lower than that of the traditional lithium-ion battery, and safety is excellent.

The invention belongs to the technical field of electrochemistry and in particular relates to a lead-manganese secondary battery. The secondary battery comprises a negative electrode taking lead as anactive substance, a positive electrode taking manganese dioxide as an active substance, sulfuric acid solution electrolyte and a porous diaphragm. According to the lead-manganese secondary battery, based on dissolving and deposition reaction of the electrode active substances, the reaction speed of positive electrode reaction is not controlled by dispersion of ions in an electrode crystal structure and ultrahigh power density is realized; negative electrode reaction is stable and reliable lead/lead sulfate conversion reaction and a dendritic crystal problem is not caused; the battery has high-stability cycling life. Compared with a commercialized lead acid battery system, one half of dosage of the lead of a battery system is reduced and a semi-lead battery can be obtained; the rapid charging/discharging performance and the cycling life are better than that of an existing lead acid battery system, so that the market of existing lead acid batteries can be replaced.

The invention belongs to the technical field of electrochemistry, and in particular relates to an acid-free storage battery taking lead as a negative electrode. The negative electrode of the acid-free storage battery is metal lead or an alloy of the lead or other modified objects; an electrolyte is an aqueous solution of common alkali metal ions or hydrogel; a common positive electrode material is a compound or a dopant thereof, a coating-type compound and a mixture in which the alkali metal ions can generate reversible intercalation. The acid-free storage battery taking the lead as the negative electrode is extremely high in safety and rate capability, and can be widely applied in storage and release of electric power.

A rechargeable battery is provided such that the positive electrode comprises lead, the negative electrode zinc, and the electrolyte is an aqueous solution of an alkali metal sulphate. Upon discharge, lead dioxide is reduced to lead sulphate and zinc is oxidized to zinc oxide. The reactions are reversed when the battery is charged.

A method of making an active layer for an activated carbon anode in a lead carbon battery includes forming a solvent mixture including poly(vinylidene fluoride) and a solvent; combining the solvent mixture with a non-solvent to form a precipitate comprising an activated carbon in a fibrillated poly(vinylidene fluoride) matrix; separating the precipitate from the solvent and the non-solvent; and forming the active layer from the precipitate. An active layer is formed by the method. A lead carbon battery includes an activated carbon anode comprising the active layer and a current collector, wherein the active layer is in electrical contact with the current collector; a lead oxide cathode that is in electrical contact with a cathode side current collector; an acid located in between the activated carbon anode and the cathode; and a casing encapsulating the activated carbon anode, the cathode, and the acid.

In the present invention, characteristics specific to all kinds of natural mineral and metal are analyzed by a magnetic resonance analyzer. The natural mineral and metal are combined and ground into powder and made into a lead plate, ceramic and a separator of a lead-acid accumulator to produce an undulation frequency and change a molecule structure of an electrolyte, thereby accelerating an ion exchange rate, speeding up a charging rate, increasing a conversion rate, decreasing stacking of lead sulfate crystalloids, reducing a corrosion rate of a positive electrode lattice body and extending a lifetime of use of the lead-acid accumulator.