34results about How to "Low self-corrosion rate" patented technology

The invention discloses an aluminum alloy anode material for an air cell, a preparation method and an aluminum air cell. The aluminum alloy anode material is composed of the following ingredients, by weight, 0.05%-6% of Zn, 0.05%-4% of Ga and 0.01%-2% of In, the balance being Al. Zn, Ga and In elements are added in the aluminum alloy anode material, the electrochemical activity is good, the self-corrosion rate is low, the open circuit potential is less than and equal to -1.76V (vs.SHE) in an alkaline electrolyte, and an electromotive force of a monomer cell is more than 1.84V. Through alloying, the electrochemical performance of the anode is raised obviously, the self-corrosion rate is lowered, the self-corrosion rate is less than 5.12mg/(cm<2>*h), and surface corrosion is uniform. The aluminum alloy anode material has excellent performances, and is a novel aluminum alloy anode material suitable for usage in an alkaline electrolyte.

The invention discloses an aluminum air battery anode material and a preparing method thereof. The aluminum air battery anode material comprises, by mass percent, 0.10%-0.15% of bismuth, 0.10%-0.15% of lead, 0.015%-0.035% of gallium and the balance aluminum. The anode material is prepared through the machining processes of mixing, smelting, rolling and heat treatment. The anode material componentdesign is reasonable, the cost is low, the product performance is good, the preparing process is simple, and the aluminum air battery anode material and the preparing method of the aluminum air battery anode material are suitable for large-scale industrial production.

The invention discloses an air battery anode aluminum alloy preparation method and an air battery. The method comprises the following steps that industrial pure aluminum, high-purity lanthanum, KBF4 and K2TiF6 are weighed, and the weight percentage of the elements is controlled to be as follows: 5%-10% of Ti, 0.1%-0.5% of B, 0.5%-1% of La, and the balance Al; the industrial pure aluminum is completely melted, a temperature is controlled to be 800 DEG C or above, KBF4 and K2TiF6 powder which is uniformly stirred in advance is pressed into aluminum melt by using a graphite bell jar for uniformlystirring, the temperature is kept constant for 15-30 minutes, then the high-purity lanthanum is added, uniform stirring is conducted, the temperature is kept for 20-40 minutes, and a covering agent is added in a stirring process; the melt is cast into a cast ingot to obtain a grain refiner; the following components are weighed in percentage by weight: 0.05%-0.2% of Zn, 0.2%-0.4% of Ga, 0.01%-0.05% of Sn, 0.05%-0.1% of In, 0.1%-0.2% of Bi, 0.5%-1% of Mg, 0.1%-0.3% of Ce, 0.3%-0.5% of the grain refiner and the balance aluminum; and the aluminum is melted, the Zn, the Ga, the Sn, the In, the Bi,the Mg and the Ce are added for smelting, then the grain refiner is added for refining, casting into a casting blank is conducted, annealing is conducted, rolling into an aluminum plate is conducted,annealing is conducted again, and the annealing time is 30-40 min/mm. The prepared material is used as an anode of an aluminum air battery, so that an open circuit potential can be improved, and theself-corrosion rate can be reduced.

The invention discloses an aluminum-air battery electrolyte as well as a preparation method and application thereof. The aluminum-air battery electrolyte comprises the following components: 2-6mol/L of potassium hydroxide, 0.1-0.5 g/L of lauryl glucoside, 0.1-0.3 g/L of sodium stannate, 0.1-0.3 g/L of potassium oleate and 0.05-0.1 g/L of zinc oxide. All the components are matched, hydrogen evolution corrosion of the aluminum plate can be greatly delayed, and high open-circuit potential is guaranteed.

The invention discloses an electrolyte and an aluminum air battery. The electrolyte comprises the following preparation raw materials: sodium chloride and a corrosion inhibitor. The corrosion inhibitor is prepared from the following raw materials: natural amino acid, carbohydrate and plant essential oil. According to the aluminum air battery disclosed by the invention, the electrolyte containing the tea tree essential oil, the amino acid and the carbohydrate is adopted, so that not only can the self-corrosion of the alkaline aluminum air battery be controlled to be too fast, but also the high electrochemical activity of the aluminum anode alloy can be ensured, and the aluminum air battery has important significance on improving the discharge efficiency of the battery and prolonging the discharge life; and commercial application of the aluminum air battery is facilitated.

The invention discloses a preparation method of a corrosion-resistant magnesium alloy sacrificial anode. The preparation method is characterized by comprising the following steps: 1, carrying out corrosion-resistant treatment on a magnesium alloy sacrificial anode material to form a corrosion-resistant layer on the surface; and 2, performing conductive post-treatment on the surface of the corrosion-resistant layer to finally form a corrosion-resistant conductive magnesium alloy sacrificial anode material. The technical problems that in the prior art, because the self-corrosion rate of a magnesium alloy anode material is too high, the service cycle cannot be met generally, and a large amount of magnesium alloy is consumed in a self-corrosion mode while protection is conducted are solved.