1407results about "Conductive material" patented technology

The invention provides an aluminum alloy material, a preparation method thereof and a cable. The aluminum alloy material is prepared from the following components in percentage by mass: 0.03 percent to 0.06 percent of Si, 0.80 percent to 1.2 percent of Fe, 0.15 percent to 0.25 percent of Cu, 0.005 percent to 0.03 percent of B, 0.001 percent to 0.02 percent of Ti, 0.05 percent to 0.15 percent of Y, 0.08 percent to 0.2 percent of the total mass of La and Ce and the balance of Al. The specific content of Fe is added into the aluminum alloy material and cooperates with the rare earth elements Y, La and Ce, and the elongation at break of the aluminum alloy material is improved; meanwhile, due to the addition amount of the Y element, the fatigue resistance of the material is further improved, the toughness of the material is improved, and the heat resistance and cold resistance of the material can be improved. A specific content of boron element is added to form nuclear particles, so that the effect of refining grains is achieved, and the tensile strength of the aluminum alloy material is improved; and meanwhile, the resistivity of the aluminum alloy material is further reduced through cooperation of the boron element and other components. And the titanium element can also play a role in refining grains, so that the tensile strength of the material is further improved. The cable prepared from the aluminum alloy material can meet the requirement of a cable torsion experiment.

The invention relates to the technical field of preparation of aluminum alloy conductor materials, and particularly discloses a preparation method of an Al-Mg-Si-RE-based aluminum alloy conductor for a 10-35kV middle and low voltage cable, which comprises the following steps: adding a microalloyed intermediate alloy into an aluminum melt by adopting an addition method, stirring, smelting, refining, and casting to form, thereby obtaining the Al-Mg-Si-RE-based aluminum alloy conductor for the 10-35kV middle and low voltage cable. And performing annealing, rolling, wire drawing and aging heat treatment to obtain a final product. Wherein in the smelting stage, raw materials are completely melted at 700-750 DEG C; hexachloroethane is used as a refining agent for refining; annealing at 330-350 DEG C and preserving heat for 4-8 hours; and aging at 300 DEG C for 10 hours after deformation. In the preparation of a wire of a 10-35kV medium and low voltage power cable, the aluminum alloy wire has high conductivity of 62.1-62.5% IACS (International Annealed Copper Standard) and tensile strength of 101-117MPa by simplifying the process steps and optimizing the element ratio on the premise of ensuring the controllable raw material cost, and the mechanical property and electrical property requirements of the medium and low voltage wire are balanced.

The present invention relates to a process for the manufacture of a water-soluble n-type conductive polymer, the process comprising the steps of: a) adding a monomer to a solvent system comprising water in the presence of a catalyst, thereby providing a reaction solution; b) allowing the monomer to polymerize in the reaction solution, thereby obtaining an n-type conductive polymer solution; and c) performing post-treatment on the n-type conductive polymer solution to obtain the water-soluble n-type conductive polymer.

The invention relates to the technical field of alloys, and discloses a high-strength silver-copper alloy and a preparation method thereof. The acidified carbon nanotubes are subjected to functional modification, methylbenzene-2, 4-diisocyanate reacts with surface active groups of the methylbenzene-2, 4-diisocyanate to introduce-NCO groups, then through hydroxyl reaction of-NCO and 4-hydroxyphthalic acid, a plurality of carboxyl groups are grafted on the surfaces of the carbon nanotubes, the carboxyl groups can firmly adsorb lanthanum nitrate through a coordination effect, and meanwhile, the carboxyl groups can also adsorb lanthanum nitrate through a coordination effect. The rare earth elements are prevented from being separated from the raw materials in the ball milling process, uniform distribution is ensured, the agglomeration tendency of the carbon nanotubes can be reduced, and the dispersity of the carbon nanotubes in the silver-copper alloy is improved; the carbon nanotubes have extremely high axial strength and excellent conductivity, the mechanical and electrical properties of the alloy material can be enhanced through load transfer and a conductive network effect, rare earth lanthanum is segregated at a grain boundary to form a pinning effect to refine grains, the alloy strength is further improved, and finally collaborative improvement of the strength and the conductivity of the silver-copper alloy is achieved.

The invention discloses a manufacturing process of an aluminum-clad steel composite automobile wire, which solves the problems of high copper consumption, high cost, imperfection of an aluminum strip copper scheme in a low-voltage loop, limited application of an aluminum-clad steel scheme in an automobile cable, low cost and the like in the prior art through the steps of material selection and optimization, cladding, wire drawing, terminal connection and welding. And problems exist in the welding process of the aluminum wire in the connector. According to the aluminum-clad steel composite automobile wire manufactured by the process, on the premise of ensuring the conductivity, the copper consumption is further reduced, the mechanical strength is improved, the corrosion resistance is enhanced, meanwhile, a reliable connection solution is provided, the production cost is reduced, the overall performance of an automobile wire harness is improved, and the service life of the automobile wire harness is prolonged.

The invention discloses a compact extrusion type sheath power cable made of copper core crosslinked polyethylene and a processing technology, and relates to the technical field of crosslinked polyethylene insulated power cables, and the compact extrusion type sheath power cable sequentially comprises a conductor layer, a semi-conductive waterproof layer, a crosslinked polyethylene insulating layer, a composite shielding structure layer and a compact sheath layer from inside to outside. Through collaborative design of the gradient coating conductor and five types of stranding processes, conductivity and structural stability are remarkably improved, breakthrough suppression of local discharge capacity and optimization of electromagnetic shielding effectiveness are achieved by combining the insulating layer with the dielectric constants distributed in a gradient mode and the composite shielding structure, and the electromagnetic shielding performance is improved. And with the assistance of a nano enhanced sheath and ultrasonic crosslinking and liquid nitrogen shock cooling manufacturing processes, the cable has ultrahigh mechanical strength, extremely low porosity and excellent flame-retardant property, and the comprehensive performance of the cable is far beyond that of a conventional power cable.

The invention relates to a silver-coated copper composite material and a preparation method thereof, conductive paste and a solar cell. The silver-coated copper composite material comprises a copper core, a middle layer and a silver layer, the middle layer is arranged on the surface of the copper core, the silver layer is arranged on the surface, away from the copper core, of the middle layer, the middle layer comprises main metal elements and phosphorus elements, the main metal elements comprise at least one of nickel elements and cobalt elements, and the mass of the phosphorus elements accounts for 1%-4% of the total mass of the middle layer. By arranging the middle layer between the copper core and the silver layer, mutual diffusion between silver and copper can be effectively prevented, and the problem that traditional silver-coated copper powder is prone to oxidation is solved; according to the silver-coated copper composite material, the middle layer containing proper metal elements is doped with the phosphorus element, meanwhile, the doping content of the phosphorus element is controlled, the binding force between the middle layer and the copper core and the binding force between the middle layer and the silver layer can be effectively improved, the conductivity is guaranteed, meanwhile, the anti-oxidation temperature of the silver-coated copper composite material is effectively increased, and the thermal stability of the silver-coated copper composite material is improved.

The invention belongs to the technical field of conductor materials, and particularly relates to a creep-resistant high-strength high-conductivity aluminum alloy conductor material and a preparation method and application thereof. In the preparation process of the creep-resistant high-strength high-conductivity aluminum alloy conductor material provided by the invention, Be, Mo, Co and the like are introduced into the aluminum alloy conductor material through the intermediate alloy, and AlB3 is used for boronizing treatment; meanwhile, an expansion extrusion process is introduced between aluminum alloy continuous casting and continuous rolling processes, pre-aging treatment is carried out after solid solution heat treatment, and final aging treatment is carried out after drawing treatment; the components and the preparation process of the aluminum alloy conductor material are improved, the comprehensive performance such as conductivity, creep resistance and strength is remarkably improved, the comprehensive performance requirements of new energy automobiles on aluminum alloy conductors can be met, and the technical problem that in the prior art, the comprehensive performance of the aluminum alloy conductor material is poor is solved.

The invention relates to the technical field of cables, in particular to an aluminum alloy cable which is composed of an aluminum alloy conductor, an inner insulating layer, a fireproof wrapping tape layer and an outer sheath. The outer sheath is prepared from the following raw materials in parts by weight: 50 to 60 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of linear low density polyethylene, 10 to 20 parts of polyolefin elastomer, 5 to 10 parts of PPO-g-MAH, 20 to 30 parts of carbon black, 1 to 10 parts of organic phosphorus flame retardant, 20 to 30 parts of crusting agent and 1 to 3 parts of antioxidant; the aluminum alloy cable provided by the invention is light in weight, high in strength and excellent in fireproof and flame-retardant performance.

The invention relates to the technical field of aluminum alloy wire manufacturing, and particularly discloses a high-strength heat-resistant aluminum alloy wire and a preparation method thereof.The high-strength heat-resistant aluminum alloy wire is composed of, by mass, 0.1%-0.2% of Zr, 0.05%-0.1% of Fe, 0.01%-0.03% of Zn, 0.06%-0.1% of Si, 0.18%-0.25% of doping substances, 0.01%-0.05% of other impurities and the balance Al, the doping substances are composed of W2B and MoB2, and the balance Al is Al. According to the high-strength heat-resistant aluminum alloy wire provided by the invention, through optimal design of zirconium (Zr), iron (Fe), zinc (Zn) and silicon (Si) elements and doped substances W2B and MoB, the heat resistance and tensile strength of the aluminum alloy wire are remarkably improved on the basis of keeping good conductivity of the aluminum alloy wire.

The embodiment of the invention relates to the photovoltaic field, and provides a cyanide-free electroplating silver-coated copper conductive material, a preparation method thereof and a crystalline silicon solar cell. The silver-coated copper electrode provided by the embodiment of the invention comprises a copper core and a copper-tin alloy electroplated layer coated on the surface of the copper core, the surface of the pre-plating material is coated with the silver electroplating layer; the surface of the silver-coated copper material is coated with the self-repairing layer; wherein the self-repairing layer comprises a resin film and a pH response type microcapsule, the microcapsule is embedded in the resin film, and the microcapsule is filled with an ammonium molybdate corrosion inhibitor. The copper-silver interface bonding force can be improved through the copper-tin alloy electroplated layer, and the silver layer material does not contain cyanogen and is environmentally friendly; the corrosion inhibitor in the pH response type microcapsule in the self-repairing film layer on the surface of the silver layer is released under a specific pH condition to form a protection film on the silver layer again, so that the self-repairing purpose is achieved, and the dynamic protection effect is achieved.

The invention relates to a process for preparing a phosphor copper rod by using a phosphonate-amide composite purifying agent as a quenching aid, and belongs to the technical field of non-ferrous metallurgy. Phosphorus pentoxide and sodium carbonate are mixed and decocted into fused salt, the fused salt is cooled and ground and then added into a corundum crucible together with scrap copper to be rapidly heated, compressed air is blown in, and slagging-off is conducted after heat preservation and standing; blowing mixed gas into the melt for reduction refining; adding calcium boride into the melt for refining; the refined copper liquid is subjected to continuous casting and continuous rolling; rapidly immersing the phosphorus copper rod subjected to continuous casting and rolling into a quenching aid solution, and carrying out quenching treatment; and the quenched phosphor copper rod is blow-dried and dried, and the high-conductivity phosphor copper rod is obtained. The high-purity phosphorus copper rod prepared by the method is excellent in key indexes of copper content, phosphorus content and conductivity, and meets the expected requirements of high purity and high conductivity.

The invention relates to the technical field of cable preparation, in particular to a superconducting semi-rigid cable made of high-purity aluminum and a preparation method thereof.The method comprises the steps that the high-purity aluminum is adopted as an inner conductor, and the inner conductor is preprocessed; coating the surface of the pretreated inner conductor with a PTFE mixture by using a pushing machine at normal temperature to obtain a normal-temperature pushing core wire; the qualified normal-temperature pushing core wire is wound on a cable reel and then placed in a vacuum high-temperature furnace to be subjected to vacuum sintering so as to obtain an inner conductor wrapped with an insulating layer; and the inner conductor wrapped with the insulating layer penetrates into the processed pure aluminum outer conductor tube, and the outer conductor is wrapped with PTFE to form an outer protective sleeve. According to the invention, the performance stability of the superconducting semi-rigid cable preparation can be improved.

The invention belongs to the technical field of conductive microsphere preparation, and particularly relates to a preparation method and application of conductive microspheres with convex particles on the surfaces. The preparation method comprises the following steps: acidizing resin microspheres by using imidazole disulfate ionic liquid, and combining the acidized resin microspheres with aminated activated carbon through chemical bonds to obtain microspheres with convex particles on the surfaces; and sequentially carrying out stannous chloride sensitization, palladium chloride activation and chemical nickel plating on the microspheres with the convex particles on the surfaces to obtain the conductive microspheres with the convex particles on the surfaces. The conductive microspheres with the raised particles on the surfaces can generate more and more effective local contact points in the crimping process, so that the connection resistance is obviously reduced, and the excellent conductive performance is realized.

A high-strength multi-functional coating with a multi-level structure, and a preparation method thereof are provided. In this application, a high-efficiency cladding method based on infrared laser-plasma synchronous compounding is adopted to prepare a micro-scale columnar crystal structure that is perpendicular to a substrate and serves as a pure thermally and electrically conductive channel, and to prepare submicro- and nano-scale ceramic reinforcement phases between columnar crystals, where the submicro- and nano-scale ceramic reinforcement phases are distributed along grain boundaries. The multi-level organizational structure of this application can simultaneously improve the hardness, wear resistance, and electrical and thermal conductivities of a cladding layer for a copper alloy and can improve the reliability of damage protection for a copper alloy component used in an extreme environment.

An ion-exchange membrane comprisinga resin composition comprisinga side-chain heteroaromatic resin having a structural unit represented by the following general formula 1:wherein,R1, R2, and R3 are each optionally the same or different, and are each a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 10 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group having 6 to 10 carbon atoms,R4 is a direct bond, a substituted or unsubstituted divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 10 carbon atoms, andHc is a substituted or unsubstituted heteroaromatic group having 4 to 30 carbon atoms, the group having at least one nitrogen atom in a heteroaromatic ring structure and containing a five-membered ring and / or six-membered ring structure, anda cation-exchangeable resin.

The invention relates to the technical field of electrical materials, and particularly discloses a graphene aluminum alloy rod for electricians and a preparation method of the graphene aluminum alloy rod. The graphene aluminum alloy rod for the electrician comprises the following raw materials in percentage by weight: 0.3%-0.5% of magnesium, 0.05%-0.08% of graphene, 1%-3% of silicon, 0.3%-0.6% of zinc, 0.01%-0.03% of tin, 0.005%-0.008% of chromium, 0.2%-0.5% of lanthanum, 0.4%-0.8% of boron, 1%-3% of a toughening agent, 0.5%-0.8% of an adhesive and the balance of aluminum. Under the synergistic effect of all the components, the overall strength of the aluminum alloy material can be effectively improved, and meanwhile good conductivity of the aluminum alloy material is kept.

The invention discloses a wind-energy torsion-resistant aluminum alloy cable and a manufacturing method thereof, and relates to the technical field of cables, the wind-energy torsion-resistant aluminum alloy cable comprises a cable core, a braided shielding layer and a sheath layer which are sequentially arranged from inside to outside, and the braided shielding layer and the sheath layer are arranged outside the cable core; the cable core is formed by twisting a plurality of insulated wire cores; each insulating wire core comprises an insulating layer and a torsion-resistant aluminum alloy conductor wrapped by the insulating layer. The torsion-resistant aluminum alloy conductor is obtained by taking an AA8030 aluminum alloy as a matrix and doping silicon, iron, cadmium, scandium, manganese, a carbon nanotube and a graphene nanosheet. By doping silicon, iron, cadmium, scandium, manganese, the carbon nanotubes and the graphene nanosheets, aluminum alloy component grains are refined, the tensile strength and the elongation at break are improved compared with those of existing aluminum alloy, the alloy forms a nano-micron multi-scale reinforced structure through doping of the carbon nanotubes and the graphene nanosheets, and the tensile strength and the elongation at break are improved. And the strength and toughness of the aluminum alloy are jointly improved.

The invention discloses superfine copper powder and a preparation method and application thereof, and belongs to the technical field of copper powder.The preparation method of the superfine copper powder comprises the following steps that a micro-channel reactor is provided, and the micro-channel reactor comprises a micro-mixer and a micro-reactor which are connected with each other; a copper salt solution, a reducing agent solution and a sodium hydroxide solution are injected into a micro-channel reactor to be evenly mixed, a mixed solution is obtained and then enters the micro-channel reactor to be subjected to a reaction, discharging is conducted, and the superfine copper powder is obtained. The injection flow rate ratio of the sodium hydroxide solution to the copper salt solution to the reducing agent solution is (0.5-2): (0.8-1.2): (0.8-1.2). According to the method, the uniformity and the preparation efficiency of the superfine copper powder are remarkably improved, meanwhile, the reaction time is greatly shortened, the yield and the purity of the superfine copper powder are remarkably improved, continuous and efficient preparation of the superfine copper powder is achieved, and the method has wide application prospects.

The invention relates to the technical field of cable production, and discloses a new energy charging heat-conducting flame-retardant cable which sequentially comprises a conductor layer, a heat-conducting insulating layer, a self-healing layer, a shielding layer, a mechanical enhancement layer and a flame-retardant outer sheath layer from inside to outside. The conductor layer is formed by a plurality of stranded tin-plated copper wires or nickel-plated copper wires; the heat-conducting insulating layer is composed of a crosslinked polyethylene matrix, a two-dimensional heat-conducting filler and phase-change temperature-adjusting microcapsules, the two-dimensional heat-conducting filler comprises a mixture of boron nitride nanosheets oriented by an electric field and graphene, and the mass fraction of the filler is 40%-55%; a core material of the phase-change temperature-adjusting microcapsule is a compound of paraffin and stearic acid. According to the scheme, trace rare earth and silver elements are introduced into the conductor to form a Cu-Ag-RE solid solution structure, so that the crystal integrity and the oxidation resistance of the conductor are remarkably improved; the structure still keeps excellent conductivity and bending resistance at high temperature, so that the cable can stably operate for a long time in a high-temperature and strong ultraviolet environment during charging, and the conductivity efficiency is improved.

A high entropy alloy composite conductor(100). The high entropy alloy composite conductor (100) has an electric resistivity at room temperature of less than 200 μΩ • cm as measured by the norm ASTM B0193-20, the high entropy alloy composite conductor (100) has a temperature coefficient of resistivity (TCR) of less than 4000 ppm / K as measured by the norm ASTM B0070-90R19, and the high entropy alloy composite conductor (100) comprises at least one of the following selections (a) , and / or (b) and / or (c) : (a) a matrix comprising at least one electrically conductive high entropy alloy (101) , and a filler comprising at least one electrically conductive carbon material (103) ; (b) a matrix comprising at least one electrically conductive metal (105) , and a filler comprising at least one electrically conductive high entropy alloy (101) or a filler comprising at least one electrically conductive high entropy alloy (101) and an electrically conductive carbon material (103) ; (c) a composite comprising a core comprising at least one electrically conductive carbon material (103) and an outer shell disposed radially outwards of the core, the outer shell comprising at least one electrically conductive metal (105) and at least one electrically conductive high entropy alloy (101) .

The invention relates to the technical field of rail transit cables, in particular to a preparation method of a bending-resistant sensor cable for a high-speed motor train unit. The preparation method comprises the steps of conductor three-layer twisting and annealing, insulating layer gradient extrusion and plasma treatment, filling, twice wrapping, double-layer shielding, double-layer sheath co-extrusion and irradiation crosslinking post-treatment. The structure of the bending-resistant sensor cable sequentially comprises a high-elasticity fiber rope filler, a copper alloy conductor with a TPEE insulating layer, a thin flame-retardant cloth wrapping layer, an elastic silica gel inner shielding layer, a tinned copper wire and fiber filament outer shielding layer, a thin non-woven fabric wrapping layer and a cross-linked polyurethane double-layer sheath from inside to outside. The bending resistance of the cable exceeds 500,000 times, the cable works stably at the temperature of-50 DEG C to 125 DEG C, the service life is prolonged by 2-3 times, and the cable is suitable for the harsh environment of the high-speed motor train unit.

The invention relates to the technical field of metallurgy, in particular to an electrical-grade aluminum alloy incapable of being subjected to heat treatment. The alloy comprises the following components in percentage by weight: 0.2% of Fe, 0.08% of Si, 0.05-0.11% of Zr, 0.01-0.03% of Sc, 0.02-0.15% of Er and Yb in total or respectively, no more than 0.01% of inevitable impurities in total, no more than 0.02% of V, Ti, Mn and Cr in total, and no less than 99.5% of aluminum. The structure comprises Al3Sc and Al3Zr phase nanometer dispersed precipitates with an L12 crystal structure, and Al3 (Sc, Zr) and Al3 (Sc, Zr, Er and Yb) multi-component phases. The alloy may also contain Ce and / or Y in a total amount of 0.05 to 0.3 wt% or in a respective amount of 0.05 to 0.3 wt%. The alloy has excellent mechanical properties and high conductivity not lower than 60% IACS (International Annealed Copper Standard).

The alloy wire comprises the following components in percentage by mass: 0.1 to 6.0 weight percent of Sn, 0.1 to 0.3 weight percent of Ag, 0.01 to 0.20 weight percent of Zr, 0.02 to 1.00 weight percent of Y, 0.02 to 2.00 weight percent of Ce, 0.01 to 0.80 weight percent of Eu, 0.01 to 0.50 weight percent of Rb, Y / (Ce + Eu + Rb) is more than or equal to 0.8 and less than or equal to 1.2, and the balance of Cu and inevitable impurities of which the total amount is less than or equal to 0.05 weight percent. According to the invention, Ag and Zr are added into the copper-tin alloy wire in component design, and composite rare earth elements are also added, so that the addition amount of each rare earth element is limited, and in order to further improve the processability and comprehensive performance of the alloy wire, the addition amount of each rare earth element is limited; and finally, the preparation process of vacuum melting-continuous casting technology-multi-pass drawing combined with on-line dynamic annealing process treatment is combined, so that work hardening and internal stress of the wire are eliminated, the machining precision, plasticity and conductivity of the wire are improved, the material performance is more uniform, and the subsequent deformation or cracking risk in use is reduced.

The invention discloses a high-flexibility anti-interference fire-resistant cable for a robot and a preparation method thereof, and belongs to the technical field of wires and cables, the cable comprises an insulating wire core, the insulating wire core comprises a conductor, a shielding layer and an insulating layer, the conductor is formed by layering and twisting a plurality of anaerobic copper wires, tensile fibers are arranged in the middle of the conductor, the shielding layer is overlapped and lapped on the surface of the conductor, and the insulating layer is arranged in the shielding layer. A plurality of insulating wire cores and a filling layer are twisted into a cable, a composite belt is arranged on the outer side of the filling layer, the composite belt is made of glass fiber-aerogel, the overlapping rate is 15%-25%, and an inner shielding layer and an outer shielding layer are arranged on the outer side of the composite belt. And the outer side of the outer shielding layer is coated with a sheath layer. According to the invention, the composite belt can form a high-efficiency heat insulation layer in a fire hazard, and heat transfer to the wire core can be obviously delayed. The conductor is formed by stranding a plurality of oxygen-free copper wires in a layered manner, annealing is performed after stranding, and the aramid yarn is embedded in the conductor, so that the tensile stress to the metal conductor can be reduced, and the diameter of the conductor and the outer diameter of the whole cable are reduced while the conductivity and the transmission capability are maintained.

The invention relates to the technical field of aluminum foil preparation, in particular to an ultrathin high-conductivity aluminum foil and a preparation method thereof.The aluminum foil comprises antimony, barium, iron, restrictive silicon and the balance aluminum and impurities, antimony element enrichment bands are distributed on the section of a matrix at intervals, the antimony content in the enrichment bands is remarkably higher than that of the matrix, and a directionally-arranged microcosmic conductive network is formed. The preparation method comprises the steps of alloy smelting purification, deep supercooling continuous casting grain refinement, structure optimization through multi-section temperature control hot rolling, induction of selective migration and enrichment of antimony atoms along a dislocation wall through pulse current auxiliary cold rolling, realization of directional arrangement of an enrichment zone through electromagnetic field constraint annealing, and ultrathin finish rolling. According to the method, element distribution and a microstructure are cooperatively regulated and controlled, the counterbalance contradiction between the conductivity and the mechanical property of a traditional aluminum foil is broken through, and the conductivity, the tensile strength and the ductility are synchronously improved in an ultrathin state.

The invention provides an Al-Cu-RE series rare earth aluminum alloy which contains Al, Cu and RE, the aluminum alloy material is characterized by further comprising the following components in percentage by mass: 0.01%-0.6% of Cu, 0.001%-0.2% of RE, 0%-0.7% of Mg, 0%-0.3% of Si, 0%-0.2% of In, 0%-0.1% of B, 0%-0.3% of Mo and 0%-0.3% of Sn. The aluminum alloy material is prepared from the following components in percentage by mass: 0.01%-0.6% of Cu, 0.001%-0.2% of RE, 0%-0.7% of Mg, 0%-0.3% of Si, 0%-0.2% of In, 0%-0.1% of B, 0%-0.3% of Mo and 0%-0.3% of Sn. The invention further provides a preparation method of the Al-Cu-RE series rare earth aluminum alloy and a heat-resistant cable. On the basis of keeping low cost and low process complexity, the Al-Cu-RE series rare earth aluminum alloy for the heat-resistant cable, which is excellent in comprehensive performance (especially mechanical performance, heat resistance, corrosion resistance and conductivity), can be obtained only by adopting fewer types of low-price elements.

A conductive rod, including a conductive rod body, the diameter of the conductive rod body satisfiesμ2⁢Lπ⁢⁢E≤δ≤2⁢(1+μ2⁢Lπ⁢⁢E),wherein δ is the diameter of the conductive rod body, and the unit thereof is mm; L is the length of the conductive rod body, and the unit thereof is mm; E is the elastic modulus of the conductive rod body, and the unit thereof is Gpa; and μ is 0.5 Gpa1 / 4.

The invention discloses a power transmission member and an electrical connection assembly. The power transmission piece comprises a first metal bar which is provided with a first connecting end used for being electrically connected with a first conductive part; the second metal bar is provided with a second connecting end used for being electrically connected with a second conductive part; and the first metal bar and the second metal bar are wrapped in the insulator and are electrically isolated by the insulator. The first connecting end and the second connecting end are wrapped in the insulator and do not extend out of the insulator. In the invention, the power transmission piece is simultaneously provided with a plurality of metal bars which can be electrically connected with a plurality of conductive parts respectively, so that the electric connection operation can be simplified, and the size and the cost can be reduced.

A lithium metal battery may include an anode, and a method of preparing an anode for a lithium metal battery, wherein the anode may include an anode current collector; and an electrodeposition inducing layer disposed on the anode current collector, the electrodeposition inducing layer including a first electrodeposition inducing layer and a second electrodeposition inducing layer disposed between the first electrodeposition inducing layer and the anode current collector, the first electrodeposition inducing layer including a metal, and the second electrodeposition inducing layer including a conductive polymer.