32results about How to "Good charge and discharge cycle" patented technology

The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte.A-N═C═OIn the above formula, A represents an element or a group other than hydrogen.

The invention discloses a shell structure for a liquid metal battery and a preparation method thereof. The shell structure comprises a ceramic tube, a metal base used as a positive pole and a metal top cover used as a negative pole, wherein two ends of the ceramic tube are respectively connected with the metal base and the metal top cover to form a sealed battery housing structure. The technical problems of sealing f a liquid metal battery housing, insulation between the positive pole and the negative pole, chemical compatibility between the housing and the active material of the housing and physical and chemical stability within battery storage and operating temperature range are solved.

The invention relates to a three-dimensional miniature super capacitor electrode manufactured from a nano porous composite material and a manufacturing method thereof, which belong to the technical field of miniature energy-storing appliances and microelectronic mechanical processing. In the three-dimensional miniature super capacitor electrode, a silicon dioxide insulating layer, a metal currentcollecting and extracting layer and an electrode active material layer are sequentially formed on a silicon substrate to form the super capacitor electrode with a three-dimensional structure. The manufacturing method comprises the following steps of: forming a groove with a certain length, width and depth ratio on the silicon substrate through the micro-electromechanical systems (MEMS) etching technique; adhering an electrode active material and a conducting reinforcing agent through an organic adhesive; piling in the groove to form a self-supporting electrode; and etching the side wall of the self-supporting electrode to form the oppositely inserted three-dimensional electrode. The three-dimensional miniature super capacitor electrode adopts a three-dimensional electrode structure vertical to a chip area and extended in the third dimensional direction and has high microminiaturization degree and integration degree, so that the formed super capacitor can provide higher power output when compared with a battery and has better charge and discharge recyclability and higher charge and discharge efficiency.

The invention relates to a high-proportion borate zinc battery electrolyte and a preparation method. The molar ratio of potassium ions or / and sodium ions in the zinc battery electrolyte to borate ions is 0.28-2, and the additive is The total content in the electrolyte ≤ 40g / L. Mix KOH or / and NaOH 2~6.2 mol / L, H3BO3 3.1~7 mol / L, LiOH.H2O 0.1~0.5 mol / L, and water as solvent to form a basic solution, then add cyclohexyl hexaphosphate , isophthalic acid, isophthalic acid monosulfonic acid, micro-nano SiO2 or micro-nano TiO2, stir and let it cool naturally, then filter it with a 400-mesh sieve. The present invention substantially solves the problems of dendrite growth, zinc element transfer, plate deformation and the like during the charge and discharge process of the zinc negative electrode, significantly improves the cycle performance, and provides a reliable technology for making the zinc-based alkaline battery a new generation of power battery Assure.

The present invention discloses a cathode material for lithium ion secondary battery. The cathode material is in the form of powder particles. The powder particle includes a bulk portion and a coating portion coated on the outer surface of the bulk portion. The bulk portion is formed of at least one first cathode material which is a lithium-nickel based composite oxide. The first cathode material has electrochemical activity and has high charging-discharging specific capacity at a charged voltage of 4.2V versus Li / Li+. The coating portion is formed of at least one second cathode material. The second cathode material has no electrochemical activity or has low charging-discharging specific capacity at a charged voltage of 4.2V versus Li / Li+. Lithium ion secondary battery using the cathode material has high energy density, cycling stability, security, and output power.

The invention discloses a lead-acid battery capacity restorer, which comprises an integrated chip IC1, a field effect transistor T1, comparators IC2A, IC2B, IC2C, IC2D, a connection terminal K1 and a parallel access terminal IC2 of the lead-acid battery capacity restorer , connect the lead-acid battery that needs to restore capacity to terminal K1, charge the lead-acid battery with pulse current, and discharge the lead-acid battery during the pulse interval. The invention can effectively stabilize the capacity of the lead-acid battery, suppress the vulcanization reaction, keep the battery with high-efficiency power storage function, and automatically desulfurize the vulcanized battery to form a good charge-discharge cycle inside. Return capacity to original nominal value.

The invention discloses a method for manufacturing an all-solid-state electrolyte for a lithium-sulfur battery. Polyacrylonitrile resin micropowder and diatomite are added to a high-speed mixing agitator at a mass ratio of 46-56:54-66, and NMP solvent is added to make the diatomite The quality of the soil is 18-24%wt, uniformly mixed into viscose clay and made into block materials of corresponding shapes as required, and the block viscose clay becomes a block containing only carbon in a high-temperature furnace replaced by nitrogen Diatomaceous earth, then put it in 18-33%wt NMP solution containing lithium polysulfide, lithium methaminobutyrate, lithium perchlorate, lithium phosphate for 13-18min, take it out and put it in a high-temperature furnace for several All-solid-state electrolytes for lithium-sulfur batteries were obtained after several times of impregnation and high-temperature evaporation. The preparation method of the invention is simple and the cost is low, and the prepared all-solid-state electrolyte for the lithium-sulfur battery has high sulfur-accommodating capacity, relatively high ion transmission capacity and electrical conductivity, and can improve the high-rate performance and high-cycle performance of the lithium-sulfur battery.

The invention discloses a shell structure for a liquid metal battery and a preparation method thereof. The shell structure comprises a ceramic tube, a metal base used as a positive pole and a metal top cover used as a negative pole, wherein two ends of the ceramic tube are respectively connected with the metal base and the metal top cover to form a sealed battery housing structure. The technical problems of sealing f a liquid metal battery housing, insulation between the positive pole and the negative pole, chemical compatibility between the housing and the active material of the housing and physical and chemical stability within battery storage and operating temperature range are solved.

The invention provides a high-temperature liquid metal lithium battery and a preparation method thereof and belongs to the field of a lithium ion battery. By precisely defining the mole fraction of components of an LAGP-type solid electrolyte shell, the LAGP-type solid electrolyte shell is provided; a larger energy storage battery can be prepared instead of a button battery; and only by ensuring that anode and cathode materials are in a molten state, operating temperature of the battery can be greatly reduced, wherein the operating temperature of the battery can be controlled at 240 DEG C, which is the lowest operating temperature reported so far in the field of an all-liquid lithium battery.

The invention discloses a lead-acid battery capacity restorer, comprising an integrated chip IC1, a field-effect tube T1, comparers IC2A, IC2B, IC2C, and IC2D, a wiring terminal K1 and a parallel access terminal IC2 of the lead-acid battery capacity restorer. According to the invention, a lead-acid battery needing capacity restoring is accessed into the wiring terminal K1 for charging through a pulse current, and the lead-acid battery is subjected to discharge during a pulse interval. The lead-acid battery capacity restorer of the invention can effectively stabilize the capacity of a lead-acid battery, inhibit sulfuration reaction, and make the battery always maintain an efficient electricity storing function, as well as carry out desulphurization treatment automatically to a vulcanized battery so as to enable the formation of a good charge-discharge circulation inside the battery and restore the capacity to an original nominal value.

The invention provides an application of a LiI-KI eutectic salt in a low-temperature liquid molten salt lithium battery, a low-temperature liquid molten salt lithium battery and a preparation method thereof, belonging to the field of lithium batteries. The invention provides the application of a LiI-KI eutectic salt as an electrolyte in a low-temperature liquid molten salt lithium battery. In the present invention, the eutectic temperature of the LiI-KI eutectic salt as the electrolyte is 260-265° C., and the operation temperature of the fully liquid molten salt lithium battery can be realized below 300° C. The experimental results show that the low-temperature liquid molten salt lithium battery provided by the present invention has a good charge-discharge cycle, the open circuit voltage is 0.76V, the discharge platform voltage is stable at 0.5-0.6V, the discharge platform is 0.8-0.9V, and the Coulombic efficiency is basically stable at About 97%.

The invention provides a high-temperature liquid metal lithium battery and a preparation method thereof, belonging to the field of lithium ion batteries. The present invention provides a LAGP type solid electrolyte shell through the precise limitation of the mole fraction of the components of the LAGP type solid electrolyte shell, which can make a relatively large energy storage battery, not a button battery, as long as the positive and negative electrode materials are in a molten state. Yes, the operating temperature of the battery can be greatly reduced, and the operating temperature of the battery can be controlled at 240°C, which is the lowest operating temperature in the field of all-liquid lithium batteries reported so far.

The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte.A-N═C═OIn the above formula, A represents an element or a group other than hydrogen.

The invention provides a preparation method of a battery diaphragm resisting the penetration of a lead dendritic crystal. Uniform felty products are formed by processing high alkali glass microfibers, medium-alkali glass microfibers, medium-alkali glass fibers chopped strands and organic fibers according to the weight ratio of 18-24:9-15:1-1.5:1-1.5 by using a wet process, wherein the high alkaliglass microfibers comprise 39-degree SR and / or 44-degree SR high alkali glass microfibers; the medium-alkali glass microfibers comprise 39-degree SR, 44-degree SR, 49-degree SR, 54-degree SR and 59-degree SR medium-alkali glass microfibers; the medium-alkali glass fiber chopped strands comprise 6 micrometers / 6 mm and 9 micrometers / 9 mm medium-alkali glass fiber chopped strands; and the organic fibers comprise 6 mm / 2.5D of polyester fibers with skin-core structure, 6 mm / 2D of polypropylene fibers, 6 mm / 3.5D of polytetrafluoroethylene fibers and 6 mm / 2D of polyacrylonitrile fibers. The preparedbattery diaphragm resisting the penetration of a lead dendritic crystal can obviously improve the dendritic crystal penetration resistance of a battery.

The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte.A-N═C═OIn the above formula, A represents an element or a group other than hydrogen.