39results about How to "To achieve the purpose of anti-oxidation" patented technology

The invention discloses a cathode current collector, and a preparation method and an application of the cathode current collector. The cathode current collector is in a multilayer structure, and comprises a plastic film, wherein the upper and lower surfaces of the plastic film are sequentially coated with bonding force reinforcement layers, copper coating layers and antioxidation layers. The preparation method comprises the steps of coating the bonding force reinforcement layers on the plastic film by utilizing a magnetron sputtering coating technology, coating the copper coating layers by utilizing an evaporation coating technology, and coating the antioxidation layers by utilizing an electron beam evaporation coating technology or the magnetron sputtering coating technology. The application of the cathode current collector is mainly in a lithium ion battery. The cathode current collector can realize lightweighting of the battery, improves the energy density, lowers the cost, and can reduce the possibility of falling and oxidation of the copper coating layers.

An electrolysis tank used for aluminum electrolysis, comprising a tank body, an anode and a cathode arranged within the tank body, also an electrolyte accommodated within the tank body, where at least a part of the anode is submerged in the electrolyte. The anode is arranged above the tank body. The cathode is arranged at the tank bottom and is covered by a certain amount of liquid aluminum. The electrolyte is provided between the anode and the cathode. The electrolyte covers the liquid aluminum. The tank body has arranged on an inner sidewall thereof an insulation layer for use in separating oxygen or the electrolyte from a carbon block. The tank is characterized in that: the constituents of the anode comprise Fe, Cu, Ni, and Sn, where Fe and Cu are the main constituents; the electrolyte consists of 30 to 38 wt% of NaF, 49 to 60 wt% of AlF3, 1 to 5 wt% of LiF, 1 to 6 wt% of KF, and 3 to 6 wt% of Al2O3, where the molar ratio of NaF to AlF3 is between 1.0 and 1.52. The electrolysis tank is applicable in industrialized production of electrolyzed aluminum.

The invention discloses a preparation method of a purple cabbage anthocyanin-nano chitin gelatin composite film, and a product and an application thereof. The preparation method includes crushing purple cabbages, uniformly mixing with acidified ethanol, and centrifuging to obtain a purple cabbage anthocyanin solution, concentrating the solution by rotary evaporation, and freeze-drying to obtain apowder; dissolving the purple cabbage anthocyanin powder in a nano chitin gelatin solution, uniformly dispersing, casting into a film, and drying to obtain a finished product of the purple cabbage anthocyanin-nano chitin gelatin composite film. The method adopts nano chitin and gelatin as a matrix and purple cabbage anthocyanin as a filler, so that the food packaging film has a good film-forming property, an antimicrobial property, oxidation resistance and an indicating function simultaneously, and can be applied to freshness indication for livestock meat products and aquatic products. The rawmaterials of the composite film are all food materials, and have excellent biocompatibility, safety and degradability, so as to further promote the application of natural antioxidants in intelligentpackaging.

The invention discloses an inert alloy anode for electrolytic aluminum, which has Fe and Cu as main components, and also includes Sn. The addition of Sn metal helps to form a layer on the surface of the inert alloy anode with strong oxidation resistance and stable structure The oxide film helps to improve the corrosion resistance of the anode; on this basis, the components of the inert alloy anode also include Ni, Al and Y. The addition of Al metal can prevent the main metal components from being oxidized, and the addition of Y metal The alloy can be controlled to present the required crystal form during the preparation process to achieve the purpose of anti-oxidation. The above-mentioned inert alloy anode with Fe and Cu as main components has low overvoltage, high conductivity and low cost, and is suitable for electrolytic aluminum industry.

The invention discloses a lithium battery with novel current collectors and a preparation method of the lithium battery with the novel current collectors. The lithium battery comprises a positive pole piece, a diaphragm and a negative pole piece. The positive pole piece comprises a novel positive pole current collector in a multi-layer structure, the positive pole current collector comprises a first plastic film, and each of upper and lower surfaces of the first plastic film is coated with a first adhesion reinforcement layer, an aluminum metal plating layer and a first antioxidant layer sequentially. The negative pole piece comprises a novel negative pole current collector in a multi-layer structure, the negative pole current collector comprises a second plastic film, and each of upper and lower surfaces of the second plastic film is coated with a second adhesion reinforcement layer, a copper metal plating layer and a second antioxidant layer sequentially. The preparation method includes: laminating the positive pole piece, the diaphragm and the negative pole piece, packaging through aluminum-plastic films, injecting an appropriate amount of electrolyte, and subjecting the aluminum-plastic films to hot-press packaging. The lithium battery has advantages that light weight, energy density improvement and cost reduction of the battery can be realized, and copper / aluminum plating layers are less prone to shedding and oxidization.

The invention belongs to the technical field of nuclear fuel corrosion protection and relates to an anti-oxidation coating layer for a nuclear fuel pellet and a preparation method of the anti-oxidation coating layer. The anti-oxidation coating layer is positioned on the surface of the nuclear fuel pellet, and the composition of the anti-oxidation coating layer is polycarbosilane. The preparation method of the anti-oxidation coating layer sequentially comprises the following steps: (1) dissolving the polycarbosilane in a suitable solvent to form a polycarbosilane solution; (2) immersing the nuclear fuel pellet in the polycarbosilane solution, so that the polycarbosilane uniformly coats the nuclear fuel pellet; and (3) taking out the nuclear fuel pellet from the polycarbosilane solution andair-drying. By the utilization of the anti-oxidation coating layer for the nuclear fuel pellet and the preparation method of the anti-oxidation coating layer, the prepared anti-oxidation coating layernot only can effectively prevent the oxidation of the nuclear fuel pellet, but also cannot affect the composition and the performance of the nuclear fuel pellet in the processes of making and removing the coating layer.