115 results about "Li element" patented technology

The present invention relates to a coating method for a high-nickel layered oxide positive electrode material, comprising the following steps: dissolving the high-nickel layered oxide positive electrode material, a high-valent metal halide, and an alkaline lithium source in a solvent, mixing them evenly, centrifuging, and filtering, and then calcining the obtained mixed powder to obtain a high-nickel layered oxide positive electrode material with a coated structure. The present invention utilizes an acid-base neutralization reaction to coat the high-nickel layered oxide positive electrode material, and the coated components include three elements: a high-valent metal, a halogen element (F or Cl) with a high electronegativity, and a Li element. The purpose of coating the former two is to improve the structural stability of the high-nickel layered oxide, and the latter provides a lithium source for the positive electrode material, while avoiding contact between the high-nickel layered oxide and the sulfide electrolyte, inhibiting the occurrence of side reactions, and being beneficial to the long-cycle stability of the sulfide all-solid-state lithium battery.

A latent heat storage particle that comprises a core particle and a coating part covering at least a part of the surface of the core particle, wherein: the core particle is composed of an element selected from the group consisting of Al, Mg, Si, Ti, Fe, Ni, Cu, Zn, Sn, Sb, Ga, In, Bi, Pb and Cd or an alloy or a compound mainly composed of the same and has a melting point of 100° C. or higher; the coating part is composed of one or more selected from the group consisting of an element different from the component of the core particle, an alloy and an inorganic compound containing the element and a mixture thereof, which does not undergo a chemical reaction with the core particle in the temperature range of the operating temperature; and at least a part of the coating part is in a particulate shape.

The invention relates to the technical field of batteries, in particular to a composite positive electrode material and a preparation method and application thereof. A composite positive electrode material comprises a positive electrode base material, the chemical formula of the positive electrode base material is LimNixCoyMnzQaRdO2, m is larger than or equal to 1 and smaller than or equal to 1.2, and xlt is larger than or equal to 0.5; 1, 0lt; yt; Yt; 0.5, Li comprises a primary Li element and a secondary Li element, Q is a primary doping element, 0 lt; a < = 0.5, R is a secondary doping element, and 0 < d < = 0.5; x + y + z + a + d = 1, and the doping depth h of the secondary doping element meets 0 lt; h is less than or equal to 850nm; and the particle sizes D10, D50 and D90 of the positive electrode base material meet the condition that (D90-D10) / D50 is more than or equal to 0.8 and less than or equal to 1.15. According to the composite positive electrode material, the phenomena of enrichment of doping elements on the surface of a single crystal and non-uniform lithiation in the single crystal can be relieved, so that the capacity and the cycling stability of the positive electrode material are improved.

The present invention provides a method of using a wet method to recycle metal elements in lithium batteries, including the following steps: Step 1, pretreating lithium batteries, so as to obtain a mixture of powders containing positive-electrode materials; Step 2, acid leaching to obtain leachate; Step 3, if the to-be-recycled lithium battery contain a lithium iron phosphate battery, the solid products, obtained after acid leaching and solid-liquid filtration, are heated in an oxygen-containing atmosphere, so as to burn up carbon, then the left is ferric phosphate; Step 4, if the to-be-recycled lithium battery contains a ternary lithium battery, the leachate, obtained after acid leaching and solid-liquid filtration, is sent to an extraction step, wherein diisooctyl phosphate is used as extraction agent, so as to obtain a raffinate containing Li element and an organic phase containing Ni / Co / Mn elements.

The invention provides a sodium-ion battery positive electrode material and a preparation method thereof, a positive electrode plate, a sodium-ion battery and power-related equipment, and relates to the technical field of new energy. According to the preparation method of the sodium ion battery positive electrode material provided by the invention, a sodium supplementing agent and redundant water can be generated in situ on the surfaces of the positive electrode material particles by utilizing the reaction of the organic acid and the residual alkali, and after the reaction is finished, the nanoscale lithium hydroxide particles are dissolved in the generated water; lithium ions dissolved in water can be subjected to a liquid phase ion exchange reaction by utilizing a chemical potential difference between Li < + > and Na < + >, and a trace amount of Li element is introduced into a sodium layer on the surface of a particle, so that a repulsive force generated between oxygen and oxygen in a high charge state of the positive electrode material can be relieved, and ladder-shaped slippage of a transition metal layer is inhibited; and the exposed slip surface is prevented from further reacting with electrolyte to generate a CEI film, so that the structural stability and the electrochemical performance of the positive electrode material are improved.

To provide a reductant capable of preventing or suppressing deterioration in performance and lifespan of an oxygen carrier while enabling relatively easy thermal control.SOLUTION: According to one aspect of the present invention, a reductant is provided which generates oxygen defects upon contact with a reducing gas containing hydrogen and eliminates the oxygen defects upon contact with an oxidizing gas containing carbon dioxide. The reductant contains an oxygen carrier having oxygen ion conductivity and latent heat storage particles. The oxygen carrier includes at least two metal elements belonging to Group 3 and Group 4 of the periodic table, including lanthanoids and actinoids, or includes Fe. The latent heat storage particles comprise a core particle and a coating part covering at least a portion of the core particle. The core particle is composed of an element selected from the group consisting of Al, Mg, Si, Ti, Fe, Ni, Cu, Zn, Sn, Sb, Ga, In, Bi, Pb, and Cd, or an alloy or compound mainly composed of the element, having a melting point of 100°C or higher.SELECTED DRAWING: Figure 1

The present invention refers to an electrolyser (1) for the production of hydrogen from an alkaline electrolyte. The electrolyser (1) comprises a first header (2) and a second header (3) between which a plurality of elementary cells (4) and a plurality of bipolar plates (5) are stacked. Each bipolar plate (5) separates two adjacent elementary cells. The electrolyser (1) further comprises a plurality of clamping elements (20) that mechanically connect said headers (2, 3). Each of the elementary cells (4) comprises a frame (6) defining a chamber (6A), having an anodic section and a cathodic section, in which an anodic electrode (7) and a cathodic electrode (8) are at least in part housed. Each of the elementary cells (4) further comprise a separator element (10) that separates the anodic section from the cathodic section. According to the invention, each of the frames (6) comprises first through holes (61) and each of the bipolar plates (5) comprises second through holes (51), wherein each of said first through holes (61) of one frame (6) is mutually aligned with a corresponding first through holes (61) of each of the another frames (6) and with one of said second through holes (51) of each bipolar plate (5), wherein each one of said clamping means (20) extends through said through holes (51, 61) mutually aligned.

The invention discloses a solid-state electrolyte material and a preparation method thereof, a solid-state battery and a device, the solid-state battery electrolyte material is composed of elements A, B, P and S, A represents a Li element, B represents a doping element, P represents a phosphorus element, and S represents a sulfur element; the chemical formula is AxByPSz, x + y is greater than or equal to 1, and z is between 1 and 3; the doping elements are selected from at least four or more of Ag, Au, Co, Cr, Cu, Fe, Hf, Mn, Mo, Nb, Ni, Pd, Rh, Ru, Sc, Ta, Ti, V, W, Y, Zn, Zr, Al, Sn, In, Bi, B, Ge and Si. The solid electrolyte material prepared by the invention has high conductivity and excellent thermal stability, and has huge application potential in the field of solid-state batteries.

The invention provides a preparation method of a high-compaction lithium iron phosphate positive electrode material, and the method comprises the following steps: providing a first lithium iron phosphate precursor and a second lithium iron phosphate precursor, the first lithium iron phosphate precursor and the second lithium iron phosphate precursor respectively comprising a Li element, a Fe element, a P element and an O element; the particle size Dv150 of the first lithium iron phosphate precursor is 2.0-3.5 m, and the particle size Dv250 of the second lithium iron phosphate precursor is 0.3-0.6 m; iron sources for preparing the first lithium iron phosphate precursor and the second lithium iron phosphate precursor are different; and mixing and sintering the first lithium iron phosphate precursor and the second lithium iron phosphate precursor, and crushing to obtain the lithium iron phosphate positive electrode material. According to the preparation method, the sintering yield of iron is relatively high, the process cost is saved, and the prepared lithium iron phosphate positive electrode material has relatively high compaction density and relatively high gram volume.

To provide an active metal brazing material which can suppress variation in joining.SOLUTION: An active metal brazing material contains one or two kinds of Ti component particles, CuSn alloy particles and CuIn alloy particles, wherein the Ti component particles are composed of one or more kinds of Ti particles and Ti hydride particles, the CuSn alloy particles are composed of Cu and Sn, when the total of Cu and Sn is 100 pts.mass, Cu is 30 pts.mass or more and 80 pts.mass or less, and Sn is 20 pts.mass or more and 70 pts.mass or less, the CuIn alloy particles are composed of Cu and In, and when the total of Cu and In is 100 pts.mass, Cu is 30 pts.mass or more and 80 pts.mass or less, and In is 20 pts.mass or more and 70 pts.mass or less.SELECTED DRAWING: Figure 1

The present invention belongs to the field of new energy, and discloses a lithium cobalt oxide positive electrode material, including a core layer, a shell layer, and a protective layer arranged in sequence from the inside to the outside; the core layer is a core layer of lithium cobalt oxide material doped with Mg, Y, and Zr; the shell layer is a fast ion layer of a spinel phase composed of Co, Al, Ti, and O elements; the protective layer is a lithium composite layer composed of Li, Co, and F elements. The positive electrode material stabilizes the thermal stability of the lattice structure of LCO under high voltage by doping the core layer with Mg‑Y‑Zr, and the spinel phase of the shell layer Co‑Al‑Ti‑O forms a fast ion layer to improve the conductivity of LCO; the outer layer of the shell Li‑Co‑F lithium composite provides a portion of the capacity while isolating the direct contact between the lithium cobalt oxide and the electrolyte, inhibiting the occurrence of side reactions at the interface under high voltage, and synergistically regulating the structure and interface to achieve long-cycle lithium cobalt oxide at high voltage (4.55V) and high temperature. At the same time, the present invention also provides a preparation method and application of the lithium cobalt oxide positive electrode material.

The invention discloses a lithium-rich high-nickel porous positive electrode material and a preparation method and application thereof. The positive electrode material is composed of Li, Ni, M, M ', M' 'and O elements. Wherein the molar ratio of the Ni element to the Li element is more than 0.64; the ratio of the total mole number of the elements Ni, M, M 'and M' 'to the mole number of the Li element is n, 0.7 lt; nlt; 1; m is selected from at least one of metal elements in the third period to the sixth period; m'is selected from at least one of metal elements in the second to fifth periods; m ''is selected from at least one of metal or non-metal elements and is different from M and M '; in an X-ray diffraction pattern of the positive electrode material obtained under CuKa radiation, at least one characteristic peak appears at 2 theta at 20-35 degrees; the positive electrode material is provided with a pore structure, and the pore structure comprises closed pores and open pores. The 0.1 C reversible specific capacity of the battery prepared from the positive electrode material can reach 249mAh / g or more.

An electrode active material and a preparation method thereof, an electrode, a battery and a device. The electrode active material comprises: a core and a coating layer, wherein the core contains a ternary material, the coating layer covers the core, the coating layer contains a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product contains Li element, S element and O element.

An all-solid-state battery includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer. A negative electrode mixture layer of the negative electrode layer contains either one or both of a negative electrode active material and a carbon material, a first phase in contact with at least a part of the negative electrode active material and the carbon material, and a second phase in contact with at least a part of the first phase. The first and second phases contain a Li element and an X element which is at least one halogen element selected from the group consisting of F, Cl, Br, and I. An X element concentration in the first phase is higher than in the solid electrolyte layer. An X element concentration in the second phase is lower than the in the first phase and in the solid electrolyte layer.

A catalytic electrode includes a nickel-based porous base material, and a plurality of catalytic alloy balls of nickel and another metal doped with elements, in which the another metal includes iron, the elements include C, F, and S, and the catalytic alloy balls are dispersed on the surface of the nickel-based porous base material. The catalytic electrode also includes a plurality of metal phosphide particles covering the nickel-based porous base material and the catalytic alloy balls, and the metal phosphide particle includes nickel phosphide, nickel iron phosphide, nickel cobalt phosphide, nickel copper phosphide, or nickel zinc phosphide.

The present invention provides a lithium-rich manganese-based positive electrode material and a preparation method thereof and a lithium-ion battery, wherein the preparation method comprises the following steps: sintering a mixture containing a Li source, a Mn source, a Ni source and a doping source once to obtain a lithium-rich sintered material; mixing the lithium-rich sintered material and a Mn-based capacity-enhancing agent, and performing secondary sintering to obtain the lithium-rich manganese-based positive electrode material; wherein the metal elements in the Mn source, the Ni source and the doping source are collectively referred to as MT, the molar ratio of the Li element in the Li source to MT is ≥1.2, and the particle size D50 of the Mn-based capacity-enhancing agent is ≤3μm. The present invention introduces a Mn-based capacity-enhancing agent, which can, on the one hand, neutralize the residual inactive lithium on the surface of the lithium-rich sintered material to react chemically, and on the other hand, can contribute more Li ion host structures on the surface of the material, accommodate more lithium ion back-insertion, absorb and convert the inactive lithium into active lithium that can contribute capacity, and obtain a lithium-rich manganese-based positive electrode material with higher efficiency and specific capacity.

The invention discloses an X-ray fluorescence spectrum detection method of metal manganese, which comprises the following specific steps: step 1, pre-oxidizing a series of standard samples of metal manganese and a sample to be detected, and melting at high temperature to prepare a uniform and smooth glass sheet; 2, measuring the X-ray fluorescence intensity of the to-be-measured element in the glass sheet prepared in the step 1 by using an X-ray fluorescence spectrometer, drawing a calibration curve of the to-be-measured element according to the X-ray fluorescence intensity of the to-be-measured element and the certificate value of the element in the standard sample, and calculating the X-ray fluorescence intensity of the to-be-measured element according to the calibration curve obtained in the step 2. And calculating the mass fractions of manganese, silicon, phosphorus, iron and other components in the metal manganese sample. The method comprises the following steps: dissolving, oxidizing and evaporating a manganese metal sample by using a dilute nitric acid solution, melting lithium tetraborate as a flux and cobalt as an internal standard element of manganese at high temperature by using a high-frequency melting furnace, and melting the sample and lithium tetraborate into a flat and smooth glass sample wafer, so that the glass sample wafer meets the analysis requirements of an X-fluorescence spectrophotometer and does not damage a platinum crucible.

The invention provides a device for selectively capturing and separating lithium ions and a preparation method thereof, a roughened copper net is used as a substrate, mercapto polyoxyethylene azobenzene spirobipyridine is used as a capturing agent, and the capturing agent and the roughened copper net are combined through a Cu-S bond, so that the device for selectively capturing and separating lithium ions is obtained. And forming the Azo-2P-PEGn-SCu device which is supported by the roughened copper mesh and of which the surface is covered with the Azo-2P-PEGn-S fragments. The selective capture type lithium ion separation device provided by the invention has relatively good combination selectivity with the lithium salt, the separation of the lithium element does not depend on any crystallization process, and the separation percentage of the Li element is not less than 87%. The Azo-2P-PEGn-SCu device provided by the invention is regenerated by adopting light irradiation, no three wastes are formed in the regeneration process, and the regenerated Azo-2P-PEGn-SCu device still has relatively good selectivity on the lithium salt.

The invention discloses a manganese-based material as well as a preparation method and application thereof. The crystal structure of the manganese-based material comprises an alkali metal layer, an O element and a transition metal layer, the alkali metal layer comprises Li element; the transition metal layer comprises an Mn element and an Mn vacancy, or the Mn element, the Mn vacancy and a Li element. In the manganese-based material with the specific structure, the unique Mn vacancy in the transition metal layer can activate the oxidation-reduction activity of oxygen anions, extra capacity is provided in the charge-discharge process, and the existing crystal structure configuration of the material is enriched; furthermore, structure reverse design and in-situ lithium supplementation are carried out according to the characteristic that the material is lack of lithium, application of the structure in the aspect of the lithium ion battery is optimized, rearrangement of the Mn vacancy superstructure in the transition metal layer can be caused by addition of additional lithium atoms, and the lithium ion battery performance is improved. The more dispersed vacancy configuration can better inhibit irreversible loss of lattice oxygen and structural phase change and capacity loss caused by intra-layer / inter-layer migration of manganese.

The invention provides a preparation method of a high-strength corrosion-resistant ultralight dual-phase Mg-Li-Zn-Nd alloy, and belongs to the field of magnesium-lithium alloy processing. The method comprises the following steps: carrying out vacuum melting on raw materials to obtain a melt with uniformly distributed components; the obtained melt is subjected to casting molding and machining, and an extrusion blank is obtained; carrying out gradient time sequence pulse current treatment on the obtained extruded blank to obtain a homogenized blank; and the obtained homogenized blank is subjected to positive and negative combined pulse current auxiliary extrusion treatment, and the Mg-Li-Zn-Nd alloy is obtained. According to the method, rapid dissolution of a coarse second phase can be promoted in the gradient time sequence pulse current treatment stage, Li element volatilization and original grain growth are inhibited, alpha-Mg recrystallization is promoted in the positive and negative combined pulse current auxiliary extrusion stage, beta-Li grain growth is inhibited, precipitated phase dispersed distribution is induced, synchronous improvement of strength and corrosion resistance is achieved, and the method is suitable for industrial production. And the light high-strength corrosion-resistant magnesium-lithium alloy meeting the application of key parts of special equipment, unmanned aerial vehicles and medical instruments is obtained.

The present application relates to a positive electrode material, an electrochemical device, and an electronic device. The positive electrode material comprises a lithium transition metal composite oxide, the lithium transition metal composite oxide comprises a Li element, a Na element, and a T element, and the T element comprises at least one of Ni, Co or Mn. An electrode comprising the positive electrode material and a lithium sheet are assembled into a button cell, and when the button cell is charged to 4.5 V at a current of 0.04 C within a voltage range of 2.8 V to 4.5 V, the molar ratio of the Li element to the T element in the lithium transition metal composite oxide is w1 which satisfies w1≤0.2. The positive electrode material of the present application has a relatively low lithium content in a charging state, such that the utilization rate of lithium ions in the material can be greatly increased, improving the energy density of an electrochemical device.

The invention belongs to the technical field of advanced ceramics and energy storage, and particularly discloses Li-Zr double-site co-doped garnet solid electrolyte ceramic as well as a preparation method and application thereof, and the chemical formula of the Li-Zr double-site co-doped garnet solid electrolyte ceramic is Li6 (Al < 0.1 > Ga < 0.1 >) La3Zr1.6 (Nb < 0.2 > Ta < 0.2 >) O12; the Li element is from a lithium source, the Al element is from an aluminum source, the Ga element is from a gallium source, the La element is from a lanthanum source, the Zr element is from a zirconium source, the Nb element is from a niobium source, and the Ta element is from a tantalum source. According to the Li-Zr double-site co-doped garnet solid-state electrolyte ceramic as well as the preparation method and the application thereof, the Li-Zr double-site co-doped garnet solid-state electrolyte ceramic has relatively high ionic conductivity, and the cycling stability and the rate capability of a solid-state battery can be improved.

A coated active material includes: an electrode active material; and a coating layer that covers the electrode active material, wherein: the electrode active material includes a Li element, an M element, and an O element; M is a metal other than Li, and at least includes Ni; a molar ratio (Ni / M) of Ni to M is 80% or more; the coating layer includes a B element, a P element, a La element, and an O element; and a molar ratio (La / P) of the La element to the P element is 0.005 or more and 0.15 or less.

The invention belongs to the technical field of medium-entropy alloys, and particularly relates to a medium-entropy copper alloy and a preparation method and application thereof. The medium-entropy copper alloy provided by the invention comprises the following element components in atomic percent: 43%-47% of Cu, 7%-9% of Mn, 6%-8% of Sn, 30%-40% of Ni and 0.1%-10% of Co. According to the medium-entropy copper alloy, an alloy cast ingot is prepared through a smelting technology, and then a finished product is obtained after solid solution and aging. The Co element is introduced into the medium-entropy copper alloy and can inhibit formation and growth of discontinuous precipitated phases in the alloy, so that precipitation of the discontinuous precipitated phases is reduced, an H-L12 phase is uniformly and continuously distributed in an alloy matrix, and the mechanical property of the medium-entropy copper alloy is improved. The medium-entropy copper alloy provided by the invention has extremely high mechanical strength, fracture toughness and wear resistance.

The invention provides a co-doped mechanoluminescent material and a preparation method thereof, and a force-sensitive response household component and a preparation method thereof, and belongs to the field of mechanoluminescent materials. The chemical formula of the co-doped mechanoluminescent material provided by the invention is Ca < 1-x > Li < x > Zn < 0.98-x > Mn < 0.02 > Nb < x > OS, wherein x is more than 0 and less than or equal to 0.1. According to the co-doped mechanoluminescence material disclosed by the invention, the Li element and the Nb element are introduced into the CaZn0. 98Mn0. 02OS mechanoluminescence material, so that the co-doped mechanoluminescence material with excellent mechanoluminescence performance is formed. Compared with most existing mechanoluminescence materials, the mechanoluminescence intensity of the co-doped mechanoluminescence material is remarkably improved, and the mechanoluminescence threshold value is relatively low. Especially when the doping concentration of Li and Nb is 0.05, compared with non-co-doping, when the external force is applied to be 0.2 N, the improvement multiple can reach 34.6 times.

The invention provides a single-crystal positive electrode material, a preparation method thereof and a lithium ion battery. The single-crystal positive electrode material comprises a positive electrode base material and a tungsten-containing coating layer coating the surface of the positive electrode base material, the tungsten-containing coating layer comprises a water-soluble tungsten-containing material and an acid-soluble tungsten-containing material; the positive electrode base material comprises a nickel-based layered oxide positive electrode material; the single-crystal positive electrode material meets the condition that C1 / C2 is greater than or equal to 80%, C1 is the mass ratio of the W element in the water-soluble tungsten-containing material in the single-crystal positive electrode material, which is tested by an ICP (Inductively Coupled Plasma) water-soluble method, to all metal elements except the Li element, and C2 is the mass ratio of the W element in the acid-soluble tungsten-containing material in the single-crystal positive electrode material, which is tested by an ICP acid-soluble method, to all metal elements except the Li element. Through the tungsten-containing coating layer for regulating and controlling the lithium-tungsten ratio, the structure of the coating layer is stable, the coating effect is excellent, the capacity and the cycle performance under high voltage are improved, and the gas production rate in the cycle process is effectively reduced.

The application discloses a high-strength and high-plasticity Mg-Y-Zn-Si-Li-Al alloy and a preparation method thereof, and relates to the technical field of light alloy processing. 97.5 Y1Zn 0.5 In the Mg 97.5 Y1Zn 0.5 Si1base alloy, the Si element is combined with the Y element to form a YSi hard and brittle phase, which is easy to hinder the elongation of the alloy; the addition of the Li element plays a grain refining role on the one hand, effectively improves the strength of the alloy, and optimizes the second phase form on the other hand, promotes the transformation of the second phase to the nanometer level, provides more slip paths for dislocation movement, and avoids plasticity deterioration; the Al element is further combined with the Y element to form a high-strength Al2Y strengthening phase, which not only reduces the precipitation of the hard and brittle phase, but also stabilizes the organizational structure through the pinning effect at the grain boundary.

A sulfide solid electrolyte includes: a Li element; a P element; a S element; and a Ha element. The sulfide solid electrolyte has an argyrodite crystal structure. The crystal structure includes a plurality of PS4 tetrahedrons where the P element may be substituted and at least a part of the S elements may be substituted. The crystal structure includes 16 elements serving as the vertices of the PS4 tetrahedrons T1 in a unit cell. When the 16 elements are made to correspond to 16 S elements constituting vertices corresponding to 16e sites of PS4 tetrahedrons T2 in a space group F-43m, an average value of a distance Δ between respective positions of the 16 elements in the PS4 tetrahedrons T1 and respective positions of the 16 S elements in the PS4 tetrahedrons T2 corresponding thereto is 0.05 Å to 0.30 Å.

Provided is a flux-cored wire for welding of structures in extremely low temperature regions, which is capable of obtaining a weld metal having excellent strength and a transverse bulging amount of a desired value or more. The flux-cored wire is defined in terms of the contents of Fe, C, Cr, Ni, etc. in the total mass of the wire, and contains Nb: 0.001 to 0.15 mass%, and V: 0.005 to 0.30 mass%. In addition, the value A1 calculated from formula (1) is 0.02 to 0.30, and the value A2 calculated from formula (2) is 10.0 to 12.3. Formula (1): A1 = [Nb] + [V] Formula (2): A2 = 1.31 x (0.98 x [Cr] + [Mo] + 0.7 x [Nb]) - 1.1 x ([Ni] + 35 x [C] + 20 x [N] + 0.25 x [Cu]). Wherein, [element] is a value indicating the content of the element in the flux-cored wire in mass%. W W W W W W W W W W is a value indicating the content of the element in the flux-cored wire in mass%.​​​​​​​​​

The invention belongs to the technical field of soluble magnesium alloy rods, and discloses a soluble magnesium alloy rod with enhanced elongation, and the magnesium alloy rod comprises the following chemical components in percentage by mass: 1.5%-14.5% of Gd element, 0.5%-4.0% of Y element, 0.1%-2.5% of Zn element, 0.2%-0.5% of Zr element, 0.01%-0.5% of Li element, 0.01%-0.6% of Ni element, 0.01%-0.5% of Ga element, 0.01%-0.5% of In element, 0.1%-2.0% of Cu element and the balance of Mg element. In component design, various elements are scientifically proportioned, the proportion of Gd to Y and the proportion of Zn to Zr are just right, specific elements are added to form a composite structure, the ductility is improved, the dissolution rate and strength are balanced by means of the Cu element, in the performance aspect, dissolution is accelerated at the high temperature of 200 DEG C, the dissolution rate is increased by 10%-15% compared with the room temperature, the degradation period can be shortened, a dissolved product is fine and uniform, and the degradation rate is high. The biocompatibility and environmental friendliness are excellent, the application field is wide, and degradable medical instruments are covered.