42results about How to "Inhibition of self-discharge" patented technology

The invention relates to the technical field of battery manufacture, in particular to lead-free and mercury-free alkali button battery zinc cream and a preparation method thereof. The invention solves the problem of pollution of lead and mercury in a battery in the prior art. The invention adopts the technical scheme that: the lead-free and mercury-free alkali button battery zinc cream is characterized in that the zinc cream is formed by mixing and stirring zinc powder mixture and electrolyte; and the zinc powder mixture is formed by mixing lead-free and mercury-free zinc powder, polyacrylic acid, polyacrylic ester and indium hydroxide. Compared with the prior art, the invention has the following advantages that: the prepared zinc cream does not contain lead and mercury and has good explosion-proof function, and the preparation method is simple and has high production efficiency.

A combined type lead-acid battery restorer comprises a circuit board, a power supply, at least one resonant pulse unit, at least one discharge line unit, at least one microprocessor and an output unit. The power supply is arranged on the circuit board and is electrically connected to an external power supply, and supplies power to the circuit board. The at least one resonant pulse unit and the at least one discharge line unit are arranged on the circuit board. The at least one microprocessor is arranged on the circuit board, and the interior of the microprocessor is provided with a first procedure in advance, and the first procedure is a positive/negative frequency conversion pulse procedure. The output unit is provided with a positive electrode electric clamp and a negative electrode electric clamp, the positive electrode electric clamp is clamped on the positive electrode of a lead-acid battery with lead sulfate crystals, the negative electrode electric clamp is clamped on the negative electrode of the lead-acid battery with lead sulfate crystals, the lead-acid battery is detected by means of the microprocessor, and the resonant pulse unit and the discharge line unit output at least one positive/negative frequency conversion pulse through the output unit, the positive/negative frequency conversion pulse and the lead sulfate crystals in the lead-acid battery resonate, and therefore the lead sulfate crystals are crushed.

The invention provides a battery, which includes an anode, a cathode, and an electrolyte solution. The anode includes a positive active material able to realize reversible separation-embedding of first metal ions. The electrolyte solution consists of first metal ions and second metal ions, in the process of charging and discharging, the first metal ions can achieve reversible separation-embedding at the anode, the second metal ions can be reduced and deposited into second metal and the second metal can be reversibly oxidized and dissolved into second metal ions. Specifically, the anode also includes a composite conductive agent containing carbon nanotubes and acetylene black, the composite conductive agent and the positive active material are in a mass ratio of 0.005-0.3, and the carbon nanotubes and acetylene black are in a mass ratio of 0.25-1.25. The invention can improve the self-discharge problem of batteries, and the provided battery has long cycle life, excellent rate capability and high specific capacity.

The present invention relates to a binder composition for an electrode containing a polymer and an aqueous vehicle. The binder composition is characterized in that the polymer is a polymer (A) with the HOMO level calculated according to the semiempirical molecular orbital method being -10 eV or lower, the difference between the LUMO level calculated according to the semiempirical molecular orbital method and the HOMO level being 10.5 eV or larger, and the content of fluorine atoms measured by combustion ion chromatography being 2 to 30 mass%. An electrochemical device obtained by using this binder composition for an electrode can maintain adhesion even under a high-temperature environment and has highly suppressed self discharge under a high-temperature environment.

The invention discloses a high-stability gel electrolyte for a zinc-air battery and a preparation method of the high-stability gel electrolyte, and belongs to the field of new energy materials, wherein a polymer gel adsorbs a low-concentration alkaline electrolyte aqueous solution containing an organic weak-acid strong-alkali salt additive and then is swollen to prepare the gel electrolyte. According to the invention, the solutes of the electrolyte are potassium hydroxide, sodium hydroxide and other strong alkalis, organic weak acid and strong alkali salt additives (formate, acetate, benzoateand the like) and organic acid radicals, so that the electrolyte can still provide high-concentration hydroxyl ions required by electrode reaction under the condition of lower alkali concentration; the alkali concentration of the gel electrolyte prepared by the method is greatly reduced, so that the corrosion of the high-concentration alkali electrolyte to a zinc negative electrode is remarkably reduced; and the quasi-solid-state zinc-air battery using the gel electrolyte inhibits the self-discharge phenomenon of the battery while ensuring the stable operation of the battery.

Provided is a nonaqueous electrolyte solution comprising a nonaqueous solvent containing acetonitrile in an amount of 5 to 95% by volume, a lithium salt, and at least one compound having a structure that satisfies the following requirements 1 to 5: 1. the compound is a condensed polycyclic heterocyclic compound; 2. a pyrimidine skeleton is contained in the condensed polycyclic heterocyclic ring; 3. at least three nitrogen atoms are contained in the condensed polycyclic heterocyclic ring; 4. at least five sp2 carbon atoms are contained in the condensed polycyclic heterocyclic ring; and 5. no hydrogen atom is bonded to the nitrogen atoms in the condensed polycyclic heterocyclic ring.

The invention provides a Zn-Ni primary battery having excellent heavy-load discharging property even if stored for 3 weeks on the conditions of 60 deg. c and humidity of 90% RH. The invention contains anode, cathode, diaphragm and basic electrolyte, where the anode comprises MnO2 and NiOOH as active substances and at least one of the oxygen-containing compounds of Mg, Zn, Ti, Sc, Ce and Y and the cathode comprises Zn as active substance.

The invention provides a long-life zinc-based flow battery. A negative electrode of the battery comprises a three-dimensional conductive carbon material and an inert conductive material; and the thickness of the inert conductive material is 20-50% of that of the three-dimensional conductive carbon material. According to the negative electrode and the battery, a self-discharge reaction caused by contact between the positive active material and the negative active material of the battery can be effectively inhibited, the coulombic efficiency of the battery is improved, a reaction interface for inducing zinc deposition occurs in the electrode, and the coulombic efficiency of the zinc-based flow battery is improved.

The invention provides a zinc electrode containing a combined zinc corrosion inhibitor. The material of the zinc electrode comprises the following components in percentage by mass: 0.001-1% of an organic corrosion inhibitor; 0.001 to 1% of indium oxide; 0-5% of bismuth oxide; 0.1 to 30% of conductive ceramic; 0.5%-5% of PTFE (polytetrafluoroethylene); 0.1%-3% of a thickening agent; the balance is zinc oxide; wherein an F-containing surfactant is selected as the organic corrosion inhibitor. The invention also provides a zinc-nickel battery of the zinc electrode and a zinc-nickel battery simultaneously applying the organic corrosion inhibitor and indium oxide. The zinc electrode containing the combined zinc corrosion inhibitor has the advantages of high capacity retention ratio, strong charge retention capability and capability of inhibiting self discharge.