40results about How to "Improve power storage performance" patented technology

The invention discloses a micro supercapacitor applied to a micro system and a preparation method thereof, which belong to the manufacturing technology range of miniature supercapacitors. The preparation method comprises the following steps: drawing graphs of a micro capacitor and an array thereof on a silicon substrate through a mask and a photoetching method; preparing a layer of a metal film current collector and a layer of a ruthenium-oxide film cathode layer on the silicon substrate; spin-coating a layer of a polyimide sacrifice layer on the layers to obtain a required support body structure and a peripheral liquid storage cavity enclosure structure; spin-coating the sacrifice layer on the layers again and depositing an anode ruthenium-oxide active substance layer and a nickel film current collector layers in turn on the layers; perforating filling holes on the upper nickel layer and an oxide layer to fill an electrolyte in a cavity; and finally, covering a polymer film layer on the whole micro supercapacitor array again to finish an encapsulation process. The micro supercapacitor is provided with the unique support body structure and the liquid storage cavity structure, has the characteristics of small volume, large energy storage density, high discharge power, monolithic and the like, can be manufactured in batches, and has wide application prospect.

A power storage device in which silicon is used as a negative electrode active material layer and which can have an improved performance such as higher discharge capacity, and a method for manufacturing the power storage device are provided. A power storage device includes a current collector and a silicon layer having a function as an active material layer over the current collector. The silicon layer includes a thin film portion in contact with the current collector, a plurality of bases, and a plurality of whisker-like protrusions extending from the plurality of bases. A protrusion extending from one of the plurality of bases is partly combined with a protrusion extending from another one of the plurality of bases.

The invention relates to the technical field of dry batteries, and in particular relates to a zinc-manganese dry battery with an improved structure and a preparation process of the zinc-manganese dry battery. The zinc-manganese dry battery comprises a zinc cylinder, pulp paper, a base, a positive electrode material, an isolation sheet, a carbon bar, a sealing unit, a positive electrode cap and a cover, wherein the sealing unit is a sealing ring; the sealing ring comprises a central column, a peripheral part and a connecting sheet; the central column is arranged in the center of the sealing ring; the peripheral part is arranged at the edge of the sealing ring; the connecting sheet is connected with the central column and the peripheral part; a through hole through which the carbon bar penetrates is formed in the central column; and the lower end of the through hole is gradually expanded outwards. The lower end of the through hole is gradually expanded outwards, so that the size of the lower part of the through hole is slightly greater than that of the upper part of the through hole, providing coating space in the through hole for a sealant, the carbon bar can be well aligned with the through hole during penetration, is convenient to install, and can be prevented from being scratched when being aligned with the through hole and penetrating through the through hole, so that assembling is facilitated. According to the preparation process, the production process is simplified, and the production cost and the labor cost are reduced.

The invention discloses a preparation method of a lithium ion battery and a supercapacitor electrode material. The preparation method comprises following steps: 1, two dimensional metal oxides and sulfides, and oxidized graphene are weighed at a certain mass ratio and are mixed to be uniform; 2, an obtained mixture is subjected to ball millilng so as to obtain a composite material formed via ordered stacking of metal oxides and sulfides / graphene, wherein the mass ratio of the metal oxides and sulfides to graphene is controlled to be x:1, 1<=x<=14, and the metal oxides and sulfides are MoS2, MoO3, V2O5, or VS2. According to the preparation method, in ball milling processing, oxidized graphene is reduced gradually, and peeling is realized gradually; peeling of the two dimensional metal oxides and sulfides is realized gradually; assembling of the oxidized graphene with the two dimensional metal oxides and sulfides is realized, so that transmission capability of charges in the two mediumsis increased, electrode material rate capability is improved; the existing of graphene is capable of increasing material flexibility, improving the volume effect resistance of the supercapacitor electrode material in charge and discharge process, and increasing electrode material cycling stability.

The invention provides a preparation method of a base material of an ionic induction plaster. The base material of the ionic induction plaster can be prepared through modification, and can be used for preparing an ionic induction plaster with high specific surface voltage and continuous microcurrent. Through performing modification on the base material, the specific area of ion stack layers of the ionic induction plaster is improved, the electricity storage capacity and the electric charge retention ability are obviously improved, the specific area of the ion stack layers is 122.8m<2> / g-130.6m<2> / g, the surface potential value can reach 1800SEV-3000SEV, and can reach 800SEV above after the base material is used for 60 h. According to the preparation method of the base material of the ionic induction plaster, the high specific surface voltage can generate continuous microcurrent, so that an obvious therapeutical effect can be exerted on osteoproliferation, lumbar spondylosis and arthralgia.

Disclosed are a non-aqueous electrolytic solution, which can improve cycle characteristics when a power storage device is used at high temperature and high voltage, and a power device using the same. The non-aqueous electrolytic solution according to the present invention comprises, in addition to a non-aqueous solvent and an electrolyte salt dissolved therein, a compound represented by the following formula (I):wherein n is an integer of 1 or 2; and when n is 1, L represents a straight or branched unsaturated hydrocarbon group of which at least one hydrogen atom is optionally substituted by a halogen atom, a cycloalkyl group of which at least one hydrogen atom is optionally substituted by a halogen atom, or an aryl group of which at least one hydrogen atom is optionally substituted by a halogen atom; and when n is 2, L represents a saturated or unsaturated divalent hydrocarbon group which optionally contains ether bond(s), or an arylene group.

The invention discloses a molybdenum oxide / carbon-coated titanium nitride nanotube array composite material and its preparation method and application. The material comprises a molybdenum oxide nanofilm and a carbon-coated titanium nitride nanotube array film; the oxide The molybdenum nano-film is used as the active layer for electricity storage, the carbon-coated titanium nitride nanotube array film conducts the base layer, and the molybdenum oxide nano-film completely covers the surface of the carbon-coated titanium nitride nanotube array film, forming an integrated structure of molybdenum oxide / Carbon-coated titanium nitride nanotube array composite material; the molybdenum oxide nano-membrane has a microporous film structure assembled from nanoparticles, and the carbon-coated titanium nitride nanotube array has tube walls connected, orderly and closely arranged Nanotube array structure. Compared with the prior art, the material of the present invention has better electrical conductivity and electrochemical corrosion resistance, and at the same time, the obtained material has higher energy density and power density, and has good charge-discharge cycle stability.

The invention discloses a multi-layered nano piezoelectric device, which is a rectangular structure formed by stacking at least five layers, which are gallium nitride-polystyrene matrix layer I and n-type silver-doped zinc oxide nanowire array layer in sequence. Ⅰ. Five-layer lamination of nitrogen-doped graphene layer, n-type silver-doped zinc oxide nanowire array layer II and gallium nitride-polystyrene matrix layer II; in the gallium nitride-polystyrene matrix layer Ⅰ One side of the nitrogen-doped graphene layer is connected to an indium tin oxide electrode I, one side of the nitrogen-doped graphene layer is connected to a graphite electrode, and one side of the gallium nitride-polystyrene matrix layer II is connected to an indium tin oxide electrode II. The piezoelectric device of the present invention has relatively high current and voltage, is small in size, can be used in series and parallel and can realize stable output, can be widely used in daily life, and is a passive and environment-friendly piezoelectric device. The invention also discloses a preparation method of a multi-stacked nanometer piezoelectric device.

The invention discloses a method for preparing activated carbon / nano-platinum / polyaniline composite material from corn stalks. First, soak and pulverize corn stalk particles in a phosphoric acid solution, combine with microwave activation to prepare activated carbon with high specific surface area, and activate the activated carbon with nitric acid; Then add an appropriate amount of citric acid and ethylene glycol solution containing NaOH to the activated carbon to reduce chloroplatinic acid to prepare activated carbon / nano-platinum composite particles (C / Pt); finally put the C / Pt composite particles into a certain Add an appropriate amount of hydrogen peroxide to a sulfuric acid solution with a high concentration of aniline, and use nano-platinum to catalyze the polymerization of aniline to obtain an activated carbon / platinum / polyaniline composite (C / Pt / PAN). The invention adjusts the proportion relationship between activated carbon and polyaniline, and utilizes the synergistic effect of the two to prepare supercapacitor electrode materials with excellent performance.

The invention discloses an energy storage photosensitive solar energy cell anode and a preparation method thereof. A structure of the energy storage photosensitive solar energy cell anode comprises a conductive glass substrate, a photoelectric conversion layer contacting with a conductive surface of the conductive glass substrate and an electric storage layer contacting with the photoelectric conversion layer. Nanometer TiO2 added drop by drop with an adhesive is grinded to a sticky state, is then coated on the conductive surface of the conductive glass substrate, is then dried, is then immersed in photosensitive dye for 12-24 hours and is then dried to form the photoelectric conversion layer; charcoal aerogel added drop by drop with an adhesive is grinded to a sticky state, is then coated on the photoelectric conversion layer and is then dried to form the electric storage layer; and the conductive glass substrate coated with the photoelectric conversion layer and the electric storage layer is baked at temperature of 130 DEG C for half an hour to form the energy storage photosensitive solar energy cell anode. The energy storage photosensitive solar energy cell anode has uniform coating, and an energy storage photosensitive solar energy cell assembled by the energy storage photosensitive solar energy cell anode has relatively good photoelectric conversion and energy storage capabilities.