Abstract: A self-assembled freestanding graphene membrane or graphene layer is formed from industrial graphene having a particle size from approximately 1 to 10 microns and cellulose nanofibers having a nanofiber size from approximately 1 to 9 microns. The self-assembled freestanding graphene membrane or graphene layer has a graphene to cellulose nanofiber mass ratio of approximately 12:1 to 20:1, an electrical conductivity of between approximately 5.8 and 7.2 S/cm, and a thermal conductivity of between 2000 and 3000 W m?1 K?1. The freestanding graphene membrane or graphene layer is formed from an aqueous dispersion of graphene and cellulose nanofibers in a mass ratio of graphene to cellulose nanofibers of 20:1 to 10:1 deposited on a substrate followed by self-assembly and drying. A dopant of oxygen, nitrogen, sulfur, nickel, gold, silver, zinc, copper, magnesium, and boron may be precisely incorporated into the graphene membrane or layer.

Abstract: Disclosed is a rubbing device. The rubbing device comprises a rotating drive part, a mounting post and a rubbing part provided with an inner hole. The rubbing part is rotatably installed on the mounting post through the inner hole; the rotating drive part is installed on the mounting post, positioned in the inner hole, and its output end is connected with the rubbing part; and the rotating drive part is used for driving the rubbing part to rotate to rub a to-be-rubbed object when the to-be-rubbed object scratches the rubbing part. In the present application, the rotating drive part can drive the rubbing part to rotate when the to-be-rubbed object scratches the rubbing part, so as to better rub the to-be-rubbed object.

Abstract: The application belongs to the technical field of pet equipment, in particular to a pet water dispenser, comprising a filter, a water pump, a drinking dish and a water storage tank with a water storage space; the drinking dish is provided with a water storage sink and a first through hole communicating with the water storage sink, the water pump and the filter are both installed on the water storage tank, and the drinking dish covers the water storage tank; a water inlet of the water pump is communicated with the water storage space, a water outlet of the water pump is communicated with the water storage sink, and the first through hole is communicated with the water storage space through the filter; the water pump, the water storage sink, the first through hole, the filter and the water storage space form a circulating filtration loop for drinking water.

Abstract: The application belongs to the technical field of pet instruments, in particular to a pet foot washer. The washer comprises a drive assembly and a cleaning bucket with a cleaning space; the drive assembly comprises a drive part, a wave transmission component, an installation block, an output shaft, a first drive pin and a second drive pin; a first end face and a second end face of the wave transmission component are both wave surfaces, the drive part is installed on the installation block, an output end of the drive part is connected with the wave transmission component, the wave transmission component is connected with the cleaning bucket through the output shaft; the first drive pin and the second drive pin are both rotatably installed on the installation block, and the wave transmission component is installed between the first drive pin and the second drive pin.

Abstract: The present application belongs to the technical field of pet feeders, in particular to a vacuum feeder. The vacuum feeder comprises a vacuum extractor, a food outlet hose, a seal and drive assembly and an outer barrel provided with a food storage space and an installation space; the vacuum extractor, the food outlet hose and the seal and drive assembly are all installed in the installation space, and the vacuum extractor is used for vacuumizing the food storage space to a vacuum state, the food storage space is communicated with an inlet of the food outlet hose, and the seal and drive assembly is used for pressing and sealing the food outlet hose. According to the application, when the food storage space is in a vacuum state, the food outlet hose is sealed, thus ensuring airtightness, preventing food from being contaminated, ensuring safety of the food and prolonging storage time.

Abstract: A lithium-based battery including an electrolyte having at least two lithium salts selected from LiPF6, LiTFSI, LiFSI or LiBF4, along with a further lithium salt additive. Through the selection of particular lithium salt combinations, a high lithium ion concentration in the electrolyte is maintained. The battery includes a cathode, an anode, and a porous polymer separator. The lithium-based battery has reliable capacity retention at high discharge rates, such as 10C to 15C.

Abstract: An amorphous composite solid electrolyte is provided that includes one or more three-dimensional branched macromolecules with a core portion and at least three arm portions connected to the core portion. Each arm portion includes a random copolymer or a block polymer comprising a first monomer and a second monomer with a molar ratio of the first monomer to the second monomer in the range from greater than 0 to less than or equal to 1. An ion conductive electrolytic solution including at least one lithium salt solution in an amount of approximately 1 mol/l to 10 mol/l is entrained within the branched macromolecule, with a weight ratio of the branched macromolecule to the ion conducive electrolytic solution equal to or lower than 1:9, such that the branched macromolecule has a swelling degree of at least 5:1 (liquid:polymer in weight) of the ion conductive electrolytic solution.

Abstract: A solar-powered position tracker includes a load including one or more of a GPS module, a GPS antenna, a GSM module, or a GSM antenna. The load is powered by a rechargeable battery, which may be charged by one or more of a non-rechargeable primary battery and a solar cell. The solar-powered position tracker includes a battery management system for powering the position tracker by controlling the solar cell, rechargeable battery and the non-rechargeable primary battery. The two-stage battery management system charges the rechargeable battery in two stages and includes a solar management and protection circuit interconnecting the solar cell, and the rechargeable battery. The battery management system is configured to execute a charging process for recharging the rechargeable battery from solar cell and protect the rechargeable battery under a high pulse current discharge process to meet a high current or high pulse current discharge demand by the load.

Abstract: The present invention provides a rechargeable lithium-ion battery with an in situ thermally-curable electrolyte. The thermally-curable electrolyte is cured from the thermally-curable electrolyte precursor solution including a first crosslinking agent, a second crosslinking agent, an initiator, an electrolyte solvent, an electrolyte salt, one or more electrolyte additives, and one or more monomers or a monomer polymerization product. The viscosity of the thermally-curable electrolyte precursor solution is below 200 cps such that the thermally-curable electrolyte precursor solution is infiltrated within the separator and the pores inside the cathode and anode layers then cured to form porous separator and porous electrodes fully permeated with a solid electrolyte.

Abstract: Provided is a pet ball launcher, comprising an avoidance drive assembly, a ball throwing assembly, a sensor and a ball serving shell; the ball serving shell is provided with a ball storage space and a launch channel communicated with the ball storage space, and the sensor is installed at an outlet of the launch channel; an output end of the avoidance drive assembly is connected with the ball serving shell, and the ball throwing assembly is installed on the ball serving shell; and when the sensor detects that there is an obstacle in front of the launch channel, the avoidance drive assembly drives the ball serving shell to rotate by a preset angle, the ball throwing assembly throws out a to-be-thrown object from the launch channel, so that the object thrown out of the launch channel avoids the obstacle.

Abstract: A flexible printed circuit board with a multi-layer all solid-state lithium ion battery printed thereon is described. A flexible printed circuit board comprises at least one electrically insulating liquid crystal polymer or polyimide layer and at least one electrically conductive metal layer. The multi-layer all solid-state lithium ion battery comprises at least one anode, at least one cathode, and at least one UV curable solid electrolyte therebetween. The battery is encapsulated between the flexible printed circuit board and a layer of laminated aluminum foil on top of the multi-layer all solid-state lithium ion battery and adhered directly to the flexible printed circuit board.

Abstract: An electrochemical device includes electrode plates and a separation layer formed on a surface of an electrode plate. The separation layer includes a porous layer formed on the surface of the electrode plate. The porous layer includes nanofibers. It takes 15 seconds or less for an electrolytic solution to infiltrate into the separation layer. The separation layer exhibits functions of a separator. Therefore, the electrochemical device achieves at least a relatively high energy density without using a stand-alone separator.

Abstract: The invention discloses a method of manufacturing an electrochemical cell having a polymer separator membrane for separation of electrodes in the electrochemical cell, including providing a cathode and providing a polymer separator membrane. At least one cycle of irradiating the polymer separator membrane is performed by an energy beam under a radiation dose ranging between 50 and 200 kGy to effect a cross-linking in the polymer separator membrane. The polymer separator membrane is maintained at a temperature between 30° C. and 70° C. An anode is then provided. Subsequently, the polymer separator membrane is compressed between the cathode and the anode. An electrolyte is provided to form the electrochemical cell.

Abstract: The present invention provides a lithium metal battery having a lithium metal electrode including a cathode, an anode, a separator positioned between the cathode and the anode, an electrolyte, and a lithium metal negative electrode. The lithium metal negative electrode includes a lithium reactive metal layer, the lithium reactive metal layer being formed on a support conductive layer. A dendrite-suppressing coating is formed over the lithium reactive metal layer; the dendrite-suppressing coating is a displacement-reacted metal including silver reacted from decomposition of a silver salt and having an interface reaction product formed from a reaction between the silver salt and the lithium reactive metal layer. The interface reaction product is positioned between the displacement-reacted metal layer and the lithium reactive metal layer. The dendrite suppressing coating permits lithium metal ions to permeate the coating to react electrolytically in an overall battery reaction.

Abstract: The preset invention provides an electrode structure for a lithium ion battery comprising an electrode selected from a cathode including a lithium-based material or an anode including a conductive material, and a melt-convertible encapsulation layer covering at least one surface layer of the electrode. The melt-convertible encapsulation layer comprises a network of nanofibers having the diameter ranging approximately from 100 to 300 nm and polymer microspheres embedded in and coated on the nanofibrous network, wherein the ratio of the diameter of the polymer microspheres to the diameter of the nanofiber is over 30. The polymer microspheres melt to form a dielectric coating of the electrode so as to prevent fire or thermal runaway at a temperature approximately from 100 to 200° C.

Abstract: A solventless method of making a dry electrode for an electrochemical cell is provided. A solventless electrode material mixture includes 85-99% electrode active material and from 0-10% conductive carbon additive. A polymer binder system is present from 1-15%. The polymer binder system includes one or more polymer binders. The electrode material mixture is mixed at a temperature greater than a softening point or a melting point of at least one polymer binder of the polymer binder system. The electrode material mixture is kneaded into an electrode material dough. The electrode material dough is formed into an electrode material sheet. At least a portion of the electrode material sheet is affixed to a metal current collector to form an electrode.