摘要:
The present disclosure discloses a battery positive electrode material and a method for treating the battery positive electrode material and a battery. The method for treating battery positive electrode material includes: cold plasma treatment of at least part of the battery positive electrode material with carbon layer on the surface to be treated to have active particles doped in the carbon layer, where the doping amount is not less than 50 ppm. At least part of the surface of the positive electrode material of the battery contains a carbon layer and at least part of the surface has a rod-like shape. The carbon layer is a carbon layer doped with active particles after cold plasma treatment, and a high-sodium ion conductance NaF layer is formed on the surface of the positive electrode material. The method of the present disclosure can enhance the particle surface energy of the positive battery material, improve its interface affinity with the electrolyte, and obtain the positive electrode material with uniform texture, low porosity, high ionic conductivity and electronic conductivity.
摘要:
Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder and preparation method therefor. The Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder has a chemical general formula RE 1-x (Ta/Nb) 1-x (Zr/Ce/Ti) 2x O 4 , 0 1 , the partical size is 10-70 µm, and the ceramic powder is spherical. During preparation, a raw material is ball-milled, reacts by adopting a high-temperature solid phase method, and then mixes with a solvent and an organic adhesive to obtain slurry C; centrifugal atomization is performed to obtain dry granules, and then the dry granules are sintered to obtain the Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder which satisfies the requirements of an APS technology for ceramic powder.
摘要:
A UAV surface coating includes at least a bonding layer, an antioxidant layer, an oxygen-blocking propagation layer and a heat-insulation cooling layer. The coating is fabricated on a surface of a UAV machine body or covers on the surface of the UAV machine body through a composite material matrix. The UAV machine body is made of lightweight material, and the composite material matrix includes a resin-based composite matrix and a ceramic-based composite matrix. Wherein, a thickness of the bonding layer is from 20µm to 200µm, a thickness of the oxygen-blocking propagation layer is from 20µm to 200µm, and a thickness of the heat-insulation cooling layer is from 80µm to 1000µm.
摘要:
A system for combined production of yellow phosphorous and syngas is disclosed. The air separation unit, the pulverized coal preparation unit and the mineral aggregate forming unit are respectively connected to a gas inlet and a top feeding port of the phosphorus coal gasifier; phosphorus-containing syngas obtained from phosphorus coal gasifier is connected to a gas inlet of the separating washing unit through an outlet of the phosphorous coal gasifier; Yellow phosphorus products and crude syngas are respectively output from the output port of the separating washing unit; and then the crude syngas is purified to obtain refined syngas. A slag discharge port at the bottom of the phosphorus coal gasifier is connected to an input port of a slag cold quenching unit. The system can improve the available energy of yellow phosphorous production, the production capacity of yellow phosphorus and the yield of syngas, and reduce CO 2 emission.
摘要:
The present invention relates to the technical field of high-entropy ceramics, and specifically disclosed is a high-entropy rare earth-toughened tantalate ceramic. The ceramic is prepared by sintering Ta205 powder and x types of different RE203 powder, wherein 4≤x≤9, and the molar ratio of the RE203 powder is 1. RE203 powder and Ta205 powder having the molar ratio of RE to Ta being 1:1 are weighed, a solvent is added for mixing, and ball milling is performed by a ball mill to obtain mixed powder M; the powder M is dried at a temperature of 650-850°C for 1.5-2 h to obtain dried powder; the powder is sieved to obtain powder N, the powder N is put in a mold for first pressing to obtain a rough blank, and the rough blank is then pressed for the second time to obtain a compact blank; the compact blank is sintered to obtain the high-entropy rare earth-toughened tantalate ceramic. The high-entropy ceramic has higher hardness and toughness.
摘要:
The invention involves a vibrating inclined plate box settlement separator, which is used for the liquid-solid separation, particularly applicable to high-efficiency settling concentration and separation of solid particles from liquid or water. The separator consists of an upper box and a lower tapered hopper. The upper box and the lower tapered hopper are connected securely to each other and sealed. The upper box is a rectangular or square steel-structured box with two supporting platforms on both of its sides, on which several spring assemblies are installed. The inclined plate box modules which can independently vibrate are installed on the spring assemblies. The feed box is placed on top of or inside the upper box. An overflow collect chute is welded on the side of the box frame opposite to the feed box. The inclined plate box modules are connected to the overflow collect chute with rubber tubes. The lower tapered hopper is a square or rectangular square tapered hopper or a square round tapered hopper. It is mounted securely onto steel-structured bracket or reinforced concrete framework. A smaller wear-resistant tapered hopper is connected to the bottom of the first hopper.
摘要:
The present disclosure belongs to the field of preparation technology and provides an ultralimit alloy and a preparation method therefor. The ultralimit alloy comprises an alloy matrix. A bonding layer and a ceramic layer are successively deposited on a surface of the alloy matrix. The alloy matrix includes one of a magnesium alloy matrix, an aluminium alloy matrix, a titanium alloy matrix, an iron alloy matrix, a nickel alloy matrix, a copper alloy matrix, a zirconium alloy, and a tin alloy. For an ultralimit magnesium alloy, an ultralimit aluminium alloy, an ultralimit nickel alloy, an ultralimit titanium alloy, an ultralimit iron alloy and an ultralimit copper alloy, the bonding layer is a composite bonding layer, the ceramic layer is a composite ceramic layer, and the outside of the composite ceramic layer is further successively deposited with a reflecting layer, a catadioptric layer, an insulating layer and a carbon foam layer. For an ultralimit zirconium alloy, the bonding layer is a composite bonding layer, the ceramic layer is a composite ceramic layer, and the outside of the composite ceramic layer is further successively deposited with a seal coating layer, a reflecting layer, a catadioptric layer and an electrically insulating layer. For an ultralimit tin alloy, a surface of a tin alloy matrix is successively deposited with a bonding layer, a ceramic layer, a seal coating layer, a reflecting layer, a catadioptric layer and an insulating layer. By depositing a plurality of coating layers on a surface of an alloy matrix, the service temperature of the alloy matrix can be increased to 100-500°C higher than the melting point of the original alloy matrix, so as to achieve the use of an ultralimit alloy in an ultralimit environment.
摘要:
A rare earth tantalate ceramic resisting corrosion of a low melting point oxide. The chemical general formula of the ceramic is RETaO4. A preparation method of the ceramic comprises: taking RE2O3 powder and Ta 2 O 5 powder and adding a solvent for mixing, and performing ball milling on the mixture by using a ball mill to obtain powder A; drying the powder A, and then performing primary sieving to obtain powder B; placing the powder B in a mold for compaction and then pre-sintering same to form a block C, performing grinding by a grinding machine after the block C is cooled to room temperature, and then performing secondary sieving to obtain powder D; and sintering the powder D to obtain the rare earth tantalate ceramic. The rare earth tantalate ceramic obtained by using the technical solution has a high compactness, and a strong capacity of resisting the corrosion of the low melting point oxide.