Method for coating surface of nano-alpha-phase nickel hydroxide with CoOOH
A nickel hydroxide, surface coating technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of conductive network damage, harsh operating conditions, slow oxidation process, etc., to improve electrical conductivity, improve electrode performance, improve Effect of Oxygen Evolution Overpotential
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Embodiment 1
[0017] A method for coating CoOOH on the surface of nano-α-phase nickel hydroxide is characterized in that the specific steps are as follows:
[0018] (1) preparation concentration is 100ml of cobalt sulfate solution of 0.01M, and concentration is 50ml of sodium oxalate solution of 0.02 mol / liter; Concentration is 50 milliliters of potassium hydroxide aqueous solution of 0.5 mol / liter; Concentration is the sodium hydroxide of 5 mol / liter 75 ml of aqueous solution; concentration of 0.01 mol / L of H 2 o 2 Solution 4ml;
[0019] (2) Get 1 gram of α-phase nickel hydroxide and cobalt sulfate solution and place it in a stirred reactor, drop the sodium oxalate solution into the reactor until the precipitation is complete, the solution after the reaction is colorless, and the control temperature is 45 °C, the resulting precipitate was filtered, washed, and dried at 50 °C;
[0020] (3) get above-mentioned obtained product and 5ml deionized water and be placed in the reactor with stir...
Embodiment 2
[0022] A method for coating CoOOH on the surface of nano-α-phase nickel hydroxide is characterized in that the specific steps are as follows:
[0023] (1) Preparation concentration is 50ml of cobalt nitrate solution of 0.05M, and concentration is 25ml of sodium oxalate solution of 0.1 mol / liter; Concentration is 20 milliliters of potassium hydroxide aqueous solution of 1.0 mol / liter; Concentration is the sodium hydroxide of 8 mol / liter 73 ml of aqueous solution; concentration of 0.02 mol / L of H 2 o 2 Solution 4ml;
[0024] (2) Get 1 gram of α-phase nickel hydroxide and cobalt sulfate solution and place it in a stirred reactor, drop the sodium oxalate solution into the reactor until the precipitation is complete, the solution after the reaction is colorless, and the control temperature is 45 °C, the resulting precipitate was filtered, washed, and dried at 50 °C;
[0025] (3) get the product that step (2) makes and 5ml deionized water is placed in the reactor with stirring, c...
Embodiment 3
[0027] A method for coating CoOOH on the surface of nano-α-phase nickel hydroxide is characterized in that the specific steps are as follows:
[0028] (1) preparation concentration is 100ml of cobalt sulfate solution of 0.1M, and concentration is 50ml of ethylenediamine solution of 0.3 mol / liter; Concentration is 20 milliliters of potassium hydroxide aqueous solution A of 2.0 mol / liter; Concentration is 10 mol / liter of hydroxide Sodium aqueous solution 70 ml; concentration of 0.01 mol / L of H 2 o 2 Solution 6ml;
[0029] (2) Get 1 gram of α-phase nickel hydroxide and cobalt sulfate solution and place it in a stirred reactor, drop the sodium oxalate solution into the reactor until the precipitation is complete, the solution after the reaction is colorless, and the control temperature is 45 °C, the resulting precipitate was filtered, washed, and dried at 50 °C;
[0030] (3) get the product that step (2) makes and 5ml deionized water is placed in the reactor with stirring, cont...
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