High-strength and high-toughness power container foil and production process thereof

Abstract

The invention relates to the technical field of capacitor aluminum foils, in particular to a high-strength and high-toughness electric power container foil and a production process thereof, and the production process comprises the following steps: electroplating an AlN composite layer with Ni-TiN inserted in graphene surface loaded with Ag on the surface of the aluminum foil; the preparation method specifically comprises the following steps: step 1, preparing graphene surface loaded Ag; step 2, doping 1%-3% of graphene surface loaded Ag into AlN to obtain AlN particles with graphene surface loaded with Ag; and step 3, preparing an AlN composite layer with Ag loaded on the surface of Ni-TiN plug-in graphene, and coating the surface of the aluminum foil with the AlN composite layer by an electroplating process to obtain the high-strength and high-toughness capacitor aluminum foil. According to the Ni-TiN nano-composite layer disclosed by the invention, the strength-toughness of the aluminum foil of the electric power container can be synergistically improved, and the Ni-TiN nano-composite layer has the advantages of good thermal stability and conductivity and good toughness of the Ni-TiN nano-composite layer.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor aluminum foil, and in particular to a high-strength and high-toughness power container foil and a production process thereof. Background Art

[0002] The present invention belongs to the technical field of electronic materials, and specifically relates to a high-strength and high-toughness power container foil and a preparation method thereof, and more particularly to a technical solution for synergistically enhancing the comprehensive performance of the aluminum foil by forming an aluminum nitride (AlN) composite layer loaded with silver (Ag) on ​​the graphene surface and a nickel-titanium nitride (Ni-TiN) intercalation layer.

[0003] Existing technical problems:

[0004] Insufficient mechanical properties: The tensile strength of traditional capacitor aluminum foil is generally lower than 200 MPa, and the elongation at break is less than 3%. It is prone to fatigue fracture under high-frequency and high-power conditions, resulting in a shortened capacitor life.

[0005] Thermoelectric performance contradiction: In existing technologies, although the hardness can be improved by adding ceramic particles (such as Al2O3, SiC), the conductivity will be sacrificed (resistivity > 2μΩ·cm); while the addition of pure graphene can improve the conductivity, the mechanical properties will be reduced due to poor interface bonding.

[0006] Poor process compatibility: Conventional composite coating technologies (such as chemical plating and magnetron sputtering) find it difficult to achieve uniform dispersion of the nano-reinforced phase in the metal matrix, and high-temperature sintering can easily induce interfacial reactions, reducing material reliability. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-strength and high-toughness power container foil and a production process thereof. The Ni-TiN nanocomposite layer can achieve a synergistic improvement in the strength and toughness of the power container aluminum foil.

[0008] The purpose of the present invention can be achieved through the following technical solutions: A production process for a high-strength and high-toughness power container foil comprises the following steps: electroplating a Ni-TiN-intercalated graphene AlN composite layer on the surface of the aluminum foil; specifically: Step 1: Prepare graphene surface loaded with Ag; Step 2: 1%-3% graphene surface-loaded Ag is doped into AlN to obtain AlN particles with graphene surface-loaded Ag; Step 3: Prepare a Ni-TiN-intercalated graphene surface-loaded AlN composite layer, and coat it on the aluminum foil surface by electroplating process to obtain a high-strength and high-toughness capacitor aluminum foil.

[0009] As a further solution of the present invention: in step 1, the precursor of the graphene-loaded nano-Ag composite material is calcined to obtain the graphene-loaded nano-Ag composite material.

[0010] As a further solution of the present invention: Preparation of precursor of graphene-loaded nano-Ag composite material: The AgNO3 aqueous solution and the graphene oxide aqueous solution are fully mixed at a mass ratio of 0.06-3:1 with a solid content; a hydrothermal reaction is carried out at a temperature of 130-200° C. for 1-6 hours, and the mixture is filtered and dried to obtain a precursor of a graphene-loaded nano-Ag composite material.

[0011] As a further solution of the present invention: in step 2, AlN powder and graphene surface loaded Ag are mixed by wet ball milling, and then formed by dry pressing and cold isostatic pressing. Finally, the formed material is sintered by hot pressing to obtain AlN particles with graphene surface loaded Ag.

[0012] As a further solution of the present invention: in step 3, a Ni-TiN intercalated graphene surface-loaded AlN composite layer of Ag is prepared on an aluminum foil using a high-speed electrospraying technique, and then rinsed and dried; The AlN composite layer with Ag loaded on the surface of Ni-TiN intercalated graphene on the aluminum foil was scanned and strengthened using plasma arc to obtain a high-strength and high-toughness capacitor aluminum foil.

[0013] As a further solution of the present invention: the process parameters of high-speed electrospray plating are: the current density of high-speed electrospray plating is 60-75A / dm2, the voltage of high-speed electrospray plating is 6-8V, the spray speed is 150-400L / h, the nozzle scanning speed is 10-25mm / s; the nozzle height is 2-4mm, and the high-speed electrospray plating is carried out for 10-20min under the conditions of a plating solution operating temperature of 40°C to 50°C.

[0014] As a further solution of the present invention, the plating solution is prepared by dispersing AlN particles with Ag loaded on the surface of nano-scale graphene into water, adding polyethylene glycol to prepare a suspension, and then mixing it with a polyethylene glycol solution of TiN particles to obtain a plating solution.

[0015] As a further solution of the present invention: the plating solution includes: 55-62 g / L nickel ions, 40-60 g / L triammonium citrate, 140-160 ml / L ammonia water, 2-10 g / L AlN particles with Ag loaded on the surface of nano-graphene, 0.2 g / L polyethylene glycol and the balance water.

[0016] As a further solution of the present invention: the parameters of the scanning enhancement treatment are: nozzle height 8-12 mm, current 8-30 A, scanning speed 0.75-2.20 mm / s, and ion gas flow rate 1.4-1.8 L / min.

[0017] A high-strength and high-toughness electric container foil is prepared by the above-mentioned production process.

[0018] Beneficial effects of the present invention: Metal Ag particles with high CTE (Ag: 19×10⁻ 6 / K) dominates the overall expansion behavior, so loading Ag on the graphene surface will effectively improve the low thermal expansion coefficient of graphene, making the CTE of graphene from -6×10⁻ 6 / K is increased to be close to that of the base material, reducing the interface stress caused by thermal mismatch; effectively solving the problem of inserting AlN barrier layer between Ni-TiN layers due to the difference in thermal expansion coefficient (AlN: 4.5×10⁻ 6 / K;Ni: 13×10⁻ 6 / K; TiN: 9×10⁻ 6 / K), shear stress is generated at the interface, causing micro cracks; and the graphene surface is loaded with Ag, which also improves its conductivity; preventing graphene from affecting the conductivity of the aluminum foil of the power container; Due to the covalent bond-dominated structure of AlN, dislocation movement is difficult, making it difficult to release stress through plastic deformation, resulting in low fracture toughness of the AlN layer. When the coating is impacted, cracks tend to propagate along the AlN layer. 1%-3% graphene is added to the AlN surface to load Ag. The graphene sheets span both sides of the crack, preventing the crack from opening through their high strength and elastic modulus. The Ag particles undergo plastic deformation under stress, absorbing the energy at the crack tip. The graphene surface is loaded with Ag to form a "graphene-Ag-AlN" gradient transition layer: Ag and AlN react at the interface to form Ag-Al intermetallic compounds, which enhances the bonding strength. The plastic deformation ability of Ag alleviates the thermal expansion mismatch between AlN and graphene. The high conductivity of Ag forms a three-dimensional conductive path with graphene, dispersing the electric field concentration and suppressing electrically induced cracks. Graphene and Ag together improve the thermal conductivity of the composite material and reduce thermal stress accumulation. Graphene fills the micropores and cracks (size <10nm) at the AlN grain boundaries, preventing crack initiation; Ag particles aggregate at the AlN grain boundaries, passivating sharp defects through plastic deformation; The mutual diffusion coefficient of Ni and Ti increases at high temperatures, TiN partially decomposes, releasing nitrogen to form pores. A 2-5nm AlN or CrN barrier layer is inserted between the Ni-TiN layers to inhibit Ni-Ti mutual diffusion, thereby improving the thermal stability of the Ni-TiN layer. Therefore, the Ni-TiN nanocomposite layer can achieve a synergistic improvement in the strength and toughness of the aluminum foil of the power container, and the Ni-TiN nanocomposite layer has the advantages of excellent thermal stability, electrical conductivity and excellent toughness. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention. Example 1

[0020] This embodiment provides a high-strength and high-toughness power container foil, comprising: an aluminum foil surface electroplated with a Ni-TiN intercalated graphene surface-loaded AlN composite layer; This embodiment also provides a production process for a high-strength and high-toughness power container foil, comprising the following steps: Step 1: Preparation of graphene surface loaded with Ag; More specifically, an AgNO3 aqueous solution and a graphene oxide aqueous solution were fully mixed at a mass ratio of 0.06:1 in terms of solid content; a hydrothermal reaction was carried out at 130°C for 1 hour, and the mixture was filtered and dried to obtain a precursor of a graphene-loaded nano-Ag composite material; the concentration of the AgNO3 aqueous solution was 0.01 mol / L; the mass concentration of the graphene oxide aqueous solution was 0.05%; The precursor of the graphene-loaded nano-Ag composite material was calcined under the protection of an argon-hydrogen mixed gas at a temperature of 350° C. for 0.5 h to obtain the graphene-loaded nano-Ag composite material. Step 2: 1% graphene surface-loaded Ag was doped into AlN to obtain AlN particles with graphene surface-loaded Ag; In more detail, AlN powder and graphene surface loaded Ag are mixed by wet ball milling, and then formed by dry pressing and cold isostatic pressing. Finally, the formed material is sintered by hot pressing to obtain AlN particles with graphene surface loaded Ag. The parameters for ball milling were a ball-to-material ratio of 10:1, anhydrous ethanol (20% solid content), 300 rpm, and 8 hours of ball milling. The parameters for dry pressing were a pressure of 200 MPa, a holding pressure of 3 minutes, and the addition of 2 wt% PVA binder (pre-sintering at 80°C was required to remove the binder). The parameters for cold isostatic pressing were 250 MPa, a holding pressure of 10 minutes, and hot pressing sintering were a temperature of 1800°C, a pressure of 30 MPa, a holding pressure of 1 hour, and a flowing high-purity nitrogen atmosphere. Step 3: Prepare a Ni-TiN intercalated graphene surface loaded with Ag AlN composite layer, and coat it on the aluminum foil surface by electroplating process to obtain a high-strength and high-toughness capacitor aluminum foil; More specifically, the following steps were performed: mechanically treating the oxide layer on the surface of the aluminum foil; cleaning the surface with an acetone solution to remove surface dirt; and removing a uniform thin layer of rust-proof oil from the surface of the aluminum foil using a solution containing 20g / L NaCO3 (sodium carbonate), 30g / L Na3PO4 (sodium phosphate), 50g / L NaOH (sodium hydroxide), and 5g / L Na2SiO3 (sodium silicate) at a solution temperature of 60°C; and immersing the degreased aluminum foil in a 20% by mass dilute sulfuric acid aqueous solution at 20°C for 30 minutes. A Ni-TiN intercalated graphene AlN composite layer loaded with Ag was prepared on an aluminum foil using a high-speed electrospraying technique, and then rinsed and dried. The process parameters of high-speed electrospray plating are as follows: the current density of high-speed electrospray plating is 60A / dm2, the voltage of high-speed electrospray plating is 6V, the spray speed is 150L / h, the nozzle scanning speed is 10mm / s; the nozzle height is 2mm, and the high-speed electrospray plating is carried out for 10min at a plating solution working temperature of 40℃. The plating solution is prepared by dispersing AlN particles loaded with Ag on the surface of nano-graphene into water, adding polyethylene glycol to prepare a suspension, and then mixing it with a polyethylene glycol solution of TiN particles to obtain a plating solution. The plating solution includes: 55g / L nickel ions, 40g / L ammonium citrate tribasic, 140ml / L ammonia water, 2g / L AlN particles with Ag loaded on the surface of nano-graphene, 0.2g / L polyethylene glycol, and the balance water; the pH value of the plating solution is 6.0; The AlN composite layer with Ag loaded on the surface of Ni-TiN intercalated graphene on the aluminum foil was scanned and strengthened using a plasma arc with a nozzle height of 8 mm, a current of 8 A, a scanning speed of 0.75 mm / s, and an ion gas flow rate of 1.4 L / min to obtain a high-strength and high-toughness capacitor aluminum foil. Example 2

[0021] This embodiment provides a high-strength and high-toughness power container foil, comprising: an aluminum foil surface electroplated with a Ni-TiN intercalated graphene surface-loaded AlN composite layer; This embodiment also provides a production process for a high-strength and high-toughness power container foil, comprising the following steps: Step 1: Preparation of graphene surface loaded with Ag; More specifically, an AgNO3 aqueous solution and a graphene oxide aqueous solution were fully mixed at a mass ratio of 0.15:1 in terms of solid content; a hydrothermal reaction was carried out at 160°C for 3 hours, and the mixture was filtered and dried to obtain a precursor of a graphene-loaded nano-Ag composite material; the concentration of the AgNO3 aqueous solution was 0.51 mol / L; the mass concentration of the graphene oxide aqueous solution was 2%; The precursor of the graphene-loaded nano-Ag composite material is calcined under the protection of an argon-hydrogen mixed gas at a temperature of 600° C. for 3 hours to obtain the graphene-loaded nano-Ag composite material. Step 2: 2% graphene surface-loaded Ag was doped into AlN to obtain AlN particles with graphene surface-loaded Ag; In more detail, AlN powder and graphene surface loaded Ag are mixed by wet ball milling, and then formed by dry pressing and cold isostatic pressing. Finally, the formed material is sintered by hot pressing to obtain AlN particles with graphene surface loaded Ag. The parameters for ball milling were a ball-to-material ratio of 10:1, anhydrous ethanol (20% solid content), 300 rpm, and 10 hours of ball milling. The parameters for dry pressing were a pressure of 200 MPa for 3 minutes, with the addition of 2 wt% PVA binder (pre-sintering at 80°C was required to remove the binder). The parameters for cold isostatic pressing were 250 MPa for 10 minutes of pressure. The parameters for hot pressing sintering were a temperature of 1830°C, a pressure of 30 MPa, a holding time of 1 hour, and a flowing high-purity nitrogen atmosphere. Step 3: Prepare a Ni-TiN intercalated graphene surface loaded with Ag AlN composite layer, and coat it on the aluminum foil surface by electroplating process to obtain a high-strength and high-toughness capacitor aluminum foil; More specifically, the following steps were performed: mechanically treating the oxide layer on the surface of the aluminum foil; cleaning the surface with an acetone solution to remove surface dirt; and removing a uniform thin layer of rust-proof oil from the surface of the aluminum foil using a solution containing 25g / L NaCO3 (sodium carbonate), 35g / L Na3PO4 (sodium phosphate), 55g / L NaOH (sodium hydroxide), and 8g / L Na2SiO3 (sodium silicate) at a solution temperature of 70°C; and immersing the degreased aluminum foil in a 20% by mass dilute sulfuric acid aqueous solution at 25°C for 30 minutes. A Ni-TiN intercalated graphene AlN composite layer loaded with Ag was prepared on an aluminum foil using a high-speed electrospraying technique, and then rinsed and dried. The process parameters of high-speed electrospray plating are as follows: the current density of high-speed electrospray plating is 70A / dm2, the voltage of high-speed electrospray plating is 7V, the spray speed is 250L / h, the nozzle scanning speed is 20mm / s; the nozzle height is 3mm, and the high-speed electrospray plating is carried out for 15min at a plating solution working temperature of 45℃. The plating solution is prepared by dispersing AlN particles loaded with Ag on the surface of nano-graphene into water, adding polyethylene glycol to prepare a suspension, and then mixing it with a polyethylene glycol solution of TiN particles to obtain a plating solution. The plating solution includes: 58g / L nickel ions, 50g / L ammonium citrate tribasic, 150ml / L ammonia water, 6g / L AlN particles with Ag loaded on the surface of nano-graphene, 0.2g / L polyethylene glycol, and the balance water; the pH value of the plating solution is 7; The AlN composite layer with Ag loaded on the surface of Ni-TiN intercalated graphene on the aluminum foil was scanned and strengthened using a plasma arc with a nozzle height of 10 mm, a current of 20 A, a scanning speed of 1.20 mm / s, and an ion gas flow rate of 1.6 L / min to obtain a high-strength and high-toughness capacitor aluminum foil. Example 3

[0022] This embodiment provides a high-strength and high-toughness power container foil, comprising: an aluminum foil surface electroplated with a Ni-TiN intercalated graphene surface-loaded AlN composite layer; This embodiment also provides a production process for a high-strength and high-toughness power container foil, comprising the following steps: Step 1: Preparation of graphene surface loaded with Ag; More specifically, an AgNO3 aqueous solution and a graphene oxide aqueous solution were fully mixed at a mass ratio of 3:1 in terms of solid content; the mixture was hydrothermally reacted at 200°C for 6 hours, filtered and dried to obtain a precursor of a graphene-loaded nano-Ag composite material; the concentration of the AgNO3 aqueous solution was 1 mol / L; the mass concentration of the graphene oxide aqueous solution was 5%; The precursor of the graphene-loaded nano-Ag composite material was calcined under the protection of an argon-hydrogen mixed gas at a temperature of 1000°C for 6 hours to obtain the graphene-loaded nano-Ag composite material. Step 2: 3% graphene surface-loaded Ag was doped into AlN to obtain AlN particles with graphene surface-loaded Ag; In more detail, AlN powder and graphene surface loaded Ag are mixed by wet ball milling, and then formed by dry pressing and cold isostatic pressing. Finally, the formed material is sintered by hot pressing to obtain AlN particles with graphene surface loaded Ag. The parameters for ball milling were a ball-to-material ratio of 10:1, medium: anhydrous ethanol (solid content 20%), parameters: 300 rpm, and ball milling for 12 hours; the parameters for dry pressing were a pressure of 200 MPa, holding pressure for 3 minutes, and adding 2 wt% PVA binder (pre-burning at 80°C was required to remove the binder); the parameters for cold isostatic pressing were 250 MPa, holding pressure for 10 minutes; the parameters for hot pressing sintering were temperature: 1850°C, pressure: 30 MPa, holding temperature: 2 hours, and atmosphere: flowing high-purity N2; Step 3: Prepare a Ni-TiN intercalated graphene surface loaded with Ag AlN composite layer, and coat it on the aluminum foil surface by electroplating process to obtain a high-strength and high-toughness capacitor aluminum foil; More specifically, the following steps were performed: mechanically treating the oxide layer on the surface of the aluminum foil; cleaning the surface with an acetone solution to remove surface dirt; and removing a uniform thin layer of rust-proof oil from the surface of the aluminum foil using a solution containing 30g / L NaCO3 (sodium carbonate), 40g / L Na3PO4 (sodium phosphate), 60g / L NaOH (sodium hydroxide), and 10g / L Na2SiO3 (sodium silicate) at a solution temperature of 80°C; and immersing the degreased aluminum foil in a 20% by mass dilute sulfuric acid aqueous solution at 30°C for 30 minutes. A Ni-TiN intercalated graphene AlN composite layer loaded with Ag was prepared on an aluminum foil using a high-speed electrospraying technique, and then rinsed and dried. The process parameters of high-speed electrospray plating are as follows: the current density of high-speed electrospray plating is 75A / dm2, the voltage of high-speed electrospray plating is 8V, the spray speed is 400L / h, the nozzle scanning speed is 25mm / s; the nozzle height is 4mm, and the high-speed electrospray plating is carried out for 20min at a plating solution working temperature of 50℃. The plating solution is prepared by dispersing AlN particles loaded with Ag on the surface of nano-graphene into water, adding polyethylene glycol to prepare a suspension, and then mixing it with a polyethylene glycol solution of TiN particles to obtain a plating solution. The plating solution includes: 62g / L nickel ions, 60g / L ammonium citrate tribasic, 160ml / L ammonia water, 10g / L AlN particles with Ag loaded on the surface of nano-graphene, 0.2g / L polyethylene glycol, and the balance water; the pH value of the plating solution is 7.5; The AlN composite layer with Ag loaded on the surface of Ni-TiN intercalated graphene on the aluminum foil was scanned and strengthened using a plasma arc with a nozzle height of 12 mm, a current of 30 A, a scanning speed of 2.20 mm / s, and an ion gas flow rate of 1.8 L / min to obtain a high-strength and high-toughness capacitor aluminum foil.

[0023] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that: the AlN composite layer with Ni-TiN intercalated with graphene surface loaded with Ag is not electroplated on the aluminum foil surface; The strength and toughness performance tests were performed on the aluminum foils of Examples 1-3 and Comparative Example 1. The test results are as follows:

[0024] As can be seen from the above table: the composite layer increases the tensile strength to 325-358 MPa (compared to 185 MPa in Comparative Example 1) and the elongation at break increases from 2.1% to 4.2-4.8%, indicating that the synergistic effect of graphene and AlN inhibits crack propagation and significantly improves toughness.

[0025] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A production process for high-strength and high-toughness electric power container foil, characterized in that: The following steps are involved: The aluminum foil surface is electroplated with a Ni-TiN intercalated graphene surface loaded with Ag AlN composite layer; specifically: Step 1: Prepare graphene surface loaded with Ag; Step 2: 1%-3% graphene surface-loaded Ag is doped into AlN to obtain AlN particles with graphene surface-loaded Ag; Step 3: Prepare a Ni-TiN intercalated graphene surface loaded with Ag AlN composite layer, and coat it on the aluminum foil surface by electroplating process to obtain a high-strength and high-toughness capacitor aluminum foil.

2. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: In step 1, the precursor of the graphene-supported nano-Ag composite material is calcined to obtain the graphene-supported nano-Ag composite material.

3. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: Preparation of precursors of graphene-loaded nano-Ag composite materials: The AgNO3 aqueous solution and the graphene oxide aqueous solution are fully mixed at a mass ratio of 0.06-3:1 with a solid content; a hydrothermal reaction is carried out at a temperature of 130-200° C. for 1-6 hours, and the mixture is filtered and dried to obtain a precursor of a graphene-loaded nano-Ag composite material.

4. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: In step 2, AlN powder and graphene surface loaded Ag are mixed by wet ball milling, and then formed by dry pressing and cold isostatic pressing. Finally, the formed material is sintered by hot pressing to obtain AlN particles with graphene surface loaded Ag.

5. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: In step 3, a Ni-TiN intercalated graphene surface-loaded AlN composite layer is prepared on an aluminum foil using a high-speed electrospraying technique, and then rinsed and dried; The AlN composite layer with Ag loaded on the surface of Ni-TiN intercalated graphene on the aluminum foil was scanned and strengthened using plasma arc to obtain a high-strength and high-toughness capacitor aluminum foil.

6. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: The process parameters of high-speed electrospray plating are: the current density of high-speed electrospray plating is 60~75A / dm2, the voltage of high-speed electrospray plating is 6~8V, the spray speed is 150~400L / h, the nozzle scanning speed is 10~25mm / s; the nozzle height is 2~4mm, and the high-speed electrospray plating is 10~20min under the condition of the plating solution working temperature of 40℃~50℃.

7. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: The preparation process of the plating solution is as follows: AlN particles with Ag loaded on the surface of nano-scale graphene are dispersed in water, polyethylene glycol is added to prepare a suspension, and then the suspension is mixed with a polyethylene glycol solution of TiN particles to obtain a plating solution.

8. The production process of a high-strength and high-toughness power container foil according to claim 1 is characterized in that: The plating solution includes: 55-62 g / L nickel ions, 40-60 g / L triammonium citrate, 140-160 ml / L ammonia water, 2-10 g / L AlN particles with Ag loaded on the surface of nano-graphene, 0.2 g / L polyethylene glycol and the balance water.

9. The production process of a high-strength and high-toughness power container foil according to claim 1, characterized in that: The parameters of the scanning enhancement treatment are: nozzle height 8-12 mm, current 8-30 A, scanning speed 0.75-2.20 mm / s, and ion gas flow rate 1.4-1.8 L / min.

10. A high-strength and high-toughness electric power container foil, characterized in that: The high-strength and high-toughness electric power container foil is prepared by the production process described in any one of claims 1 to 9.

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