111results about How to "Increase oxidation potential" patented technology

The invention discloses a lithium ion power battery electrolyte and a lithium ion secondary battery. The electrolyte comprises the following components in percentages by weight: 10% to 20% of a lithium salt mixture, 73% to 88.5% of a high voltage resistant organic solvent, 0.5% to 3% of a stabilizer and 1% to 4% of an auxiliary additive. The lithium salt of the electrolyte in the invention is composed of various lithium salts, and due to the synergistic effect of the various lithium salts, the stability of lithium hexafluorophate is improved; a nitriles solvent, a sulfones solvent and a fluorinated solvent with higher heat stability and higher oxidation potential are contained in the organic solvent, so that the electrolyte can work at relatively high temperature and voltage; the stabilizer is added into the electrolyte, water in the electrolyte can be absorbed, the generation of HF in the electrolyte is reduced, and an SEI film of the battery can be compacter and stabler through the introduction of a film-forming additive, so that the battery has preferable cycle performance.

The invention relates to the field of batteries, in particular to an electrolyte and a secondary battery containing the same. The electrolyte comprises lithium salt, an organic solvent and an additive. The additive comprises sulphonate quaternary ammonium salt, and the organic solvent contains a sulphone compound. Sulphonate quaternary ammonium salt is added to a graphite cathode, film forming is achieved before the sulphone compound, the defect that a sulphone solvent makes contact with graphite for a reaction, so that incompatibility is generated is overcome, and the circulation performance of the battery is improved.

The invention relates to a drum-type micro-electrolysis reaction device and a water treatment method thereof in the technical field of water treatment. The device comprises a drum reactor, a drive motor, a water tank, a drain pipe and an aerator pipe, wherein the drum reactor is arranged in the water tank; the drive motor is fixed on the outer side of one end of the water tank and connected with the drum reactor in the water tank; one side of the drum reactor is provided with a sealing rotary port and connected with the other end of the water tank; and both the drain pipe and the aerator pipe are arranged inside the drum reactor and connected with the sealing rotary port. Compared with the prior art, the drum-type micro-electrolysis reaction device has higher treatment efficiency and oxidation capacity, and contributes to feeding and discharging, maintenance and cleaning in the drum.

The invention provides a phosphazene perfluoroalkanesulfonylimide lithium electrolyte which includes a conductive lithium salt, a nonaqueous organic solvent and an additive, wherein the conductive lithium salt includes phosphazene perfluoroalkanesulfonylimide lithium with the structural formula being shown in the description. In the formula, M+ is Li, R1-5 = -OR7 or -M[NSO2-R6], R6 is fluorinated alkyl containing 1-8 carbon atoms, R7 is an alkanes group containing 1-10 carbon atoms. Phosphazene perfluoroalkanesulfonylimide lithium provided by the invention is good in thermal stability and hydrolysis resistance, has high electrical conductivity and oxidation potential in the traditional carbonate ester solution, and is good in compatibility with the extensively used electrode materials.

The invention relates to a drum-type micro-electrolysis reaction device and a water treatment method thereof in the technical field of water treatment. The device comprises a drum reactor, a drive motor, a water tank, a drain pipe and an aerator pipe, wherein the drum reactor is arranged in the water tank; the drive motor is fixed on the outer side of one end of the water tank and connected with the drum reactor in the water tank; one side of the drum reactor is provided with a sealing rotary port and connected with the other end of the water tank; and both the drain pipe and the aerator pipeare arranged inside the drum reactor and connected with the sealing rotary port. Compared with the prior art, the drum-type micro-electrolysis reaction device has higher treatment efficiency and oxidation capacity, and contributes to feeding and discharging, maintenance and cleaning in the drum.

The invention provides a nonaqueous electrolyte solution, which includes a lithium salt, a nonaqueous solvent and an additive. The additive contains disiloxane carbamate. The invention also provides a lithium ion battery using the nonaqueous electrolyte solution. The nonaqueous electrolyte solution provided by the invention adopts disiloxane carbamate as the specific additive, can effectively enhance the high voltage cycle life of the lithium ion battery under normal temperature and inhibit the expansion effect of the lithium ion battery, and also can improve the high voltage cycle performance and high voltage storage performance of the battery at high temperature.

The invention relates to a two-dimensional bismuth vanadate / graphene / carbon nitride composite material as well as a preparation method and an application thereof. The composite material is composed ofbismuth vanadate, graphene and carbon nitride. The bismuth vanadate and carbon nitride are both of a two-dimensional sheet structure, the length of the bismuth vanadate two-dimensional sheet structure ranges from 300 nm to 800 nm, the length of the carbon nitride two-dimensional sheet structure ranges from 400-1000 nm, and the two structures are evenly distributed on the surface of graphene; themain exposed crystal face of bismuth vanadate is a {001} crystal face. Bismuth chloride and ammonium metavanadate are mixed for a reaction and then mixed with graphene oxide and carbon nitride for hydrothermal reaction, and a composite material is obtained. According to the process, a Z-shaped photocatalytic system is constructed and formed, and the photocatalytic degradation rate is increased.

The invention discloses a method for rapidly dissolving copper. The method comprises the steps of adding solid copper to a copper dissolving tank through a copper material feeding inlet, wherein the material stacking thickness enables air to pass through smoothly; after the material is completely added, sealing the feeding inlet; starting a circulating pump, and adding a dissolving solution to thecopper dissolving tank 1 through a dissolving solution inlet; and starting heating equipment, heating the dissolving solution to 50-65 degrees centigrade, adding compressed air to the copper dissolving tank 1, adding an SO2 gas through an SO2 gas inlet, comprehensively adjusting reaction parameters, and dissolving copper rapidly to generate CuSO4. When the concentration of Cu<2+> in the solutionexceeds or is equal to 100 g / L, the reaction is stopped, Cu<2+> is discharged through a dissolving solution discharge port of the copper dissolving tank, the qualified copper sulfate solution is discharged through a dissolving solution outlet, and the exhaust gas is discharged through an air outlet. According to the method for rapidly dissolving copper disclosed by the invention, the copper dissolving rate is high, the utilization rate of oxygen in air reaches 80%, the inflated air amount is greatly reduced, the evaporation amount of the dissolving solution is reduced by about 30%, and the copper dissolving capacity can reach 800 kg / m<3>.d.

The invention discloses an oxidation reduction shuttle used as a lithium ion battery overcharge protecting agent, and application of the oxidation reduction shuttle. The structural formula of the oxidation reduction shuttle is as shown in formula I in the specification. In the formula, R is selected from any one of -CH2CH2CN, -Si(CH3)3, -S(O)2CH3, -S(O)2CF3, -C(O)CH3. Polar groups (such as cyan, an ester group and sulfonyl) are introduced into the oxidation reduction shuttle, so that the oxidation potential of the oxidation reduction shuttle can be increased, and the solubility and the stability of the oxidation reduction shuttle in electrolyte can be improved. As a lithium ion battery electrolyte additive, the oxidation reduction shuttle can be applied to lithium ion batteries.