Method for preparing hydrogen-preparing hydrogen-storing integrated electrode
An electrode and hydrogen storage technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems that need to be further improved, and achieve the effects of improving current efficiency, suppressing hydrogen evolution, and increasing speed
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[0014] The preparation method of the electrode used in the present invention is a step-by-step method for preparing alloy electrodes. Firstly, the ion-exchange membrane is plated with silver by the dipping reduction method, and then the silver amalgam is formed by the chemical deposition method or the dipping reduction method.
[0015] The silver-plating process on the ion-exchange membrane by the immersion reduction method is as follows: prepare a certain concentration of silver ammonium complex salt solution and a certain concentration of formaldehyde solution; assemble the selected ion membrane in the reactor, put the preheated silver ammonium Add the complex salt solution into the reactor to impregnate the metal complex salt oxidant on the surface of the membrane at a constant temperature; after the impregnation, pour out the solution, rinse the inner surface of the reactor with deionized water, and then pour the preheated formaldehyde solution into the reaction After the ...
Embodiment 1
[0029] Plating silver on ion exchange membrane by immersion reduction method: prepare silver ammonium complex salt solution [Ag(NH 3 ) 2 ] + The concentration is 0.01mol / L, and 1% formaldehyde solution; the weighed Nafion membrane is assembled in the reactor, the preheated metal complex salt solution is added to the reactor, the temperature is controlled at 60°C, and ultrasonic constant temperature impregnation For about 40 minutes, the metal complex salt oxidant is impregnated on the surface of the membrane; after the impregnation, pour out the solution, rinse the inner surface of the reactor with deionized water, and pour the formaldehyde solution preheated to 60°C into the reactor for reduction. The reduction reaction time is 1.0 hour; after the reduction is completed, the membrane is taken out from the reactor to be washed, dried, weighed and stored in sequence.
[0030] Preparation of silver amalgam by chemical deposition method: Prepare the silver-plated ion exchange m...
Embodiment 2
[0034] Adopt the dipping reduction method identical with embodiment 1 to silver-plate on ion-exchange membrane: take another condition to be: silver ammonium complex salt solution [Ag(NH 3 ) 2 ] + The concentration is 0.015mol / L, 0.8% formaldehyde solution; the temperature of the reactor is controlled at 50°C, and the ultrasonic constant temperature is immersed for about 40 minutes. The formaldehyde solution preheated to 50°C is poured into the reactor for reduction, and the reduction reaction time is 0.5 hours.
[0035] Preparation of silver amalgam electrode by impregnation reduction method: prepare a certain concentration of HgCl 2 solution and SnCl 2 solution; assemble the selected ionic membrane in the reactor, put the preheated HgCl 2 The solution was added into the reactor and impregnated at a constant temperature; after the impregnation, the solution was poured out, and after the inner surface of the reactor was slightly rinsed with deionized water, the preheated Sn...
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