Electrode for electrolytic processes and method of manufacturing thereof
An electrode and process technology, applied in the electrode field of electrolysis process, can solve problems such as high cathode overvoltage
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example 1
[0016] Put the amount corresponding to 100g Ru of Ru(NO)(NO 3 ) 3 Dissolve in 300 ml of glacial acetic acid to which a few ml of concentrated nitric acid have been added. The solution was stirred for three hours, keeping its temperature at 50°C. This solution was then poured into 500 ml volume of 10% by weight acetic acid (ruthenium solution).
[0017] Separately, the amount of Pr(NO 3 ) 2 Dissolve in 300 ml of glacial acetic acid to which a few ml of concentrated nitric acid have been added. The solution was stirred for three hours, keeping its temperature at 50°C. This solution was then poured into 500 ml volume of 10% by weight acetic acid (rare earth element solution).
[0018] 480 ml of the ruthenium solution were mixed into 120 ml of the rare earth element solution and stirred for five minutes. The solution thus obtained was poured into 1 liter of 10% by weight acetic acid (precursor).
[0019] A nickel mesh 200 of size 100mm x 100mm x 0.89mm was subjected to the...
example 2
[0023] Put the amount corresponding to 100g Ru of Ru(NO)(NO 3 ) 3 Dissolve in 300 ml of glacial acetic acid to which a few ml of concentrated nitric acid have been added. The solution was stirred for three hours, keeping its temperature at 50°C. This solution was then poured into 1 liter volume of 10% by weight acetic acid (precursor).
[0024] A nickel mesh 200 of size 100mm x 100mm x 0.89mm was subjected to the following process: blasting with corundum, etching in 20% HCl at 85°C for 2 minutes and thermal annealing at 500°C for 1 hour. The previously obtained precursor was then applied by brushing in 7 successive coats, followed by a drying treatment at 80°C-90°C for 10 minutes and thermal decomposition at 500°C for 10 minutes after each coat, until 12g / m 2 Deposition of Ru.
[0025] The sample was subjected to a performance test showing that at 3kA / m 2Under hydrogen evolution in 33% NaOH at a temperature of 90 °C, the ohmic drop-corrected initial cathodic potential of...
example 3
[0028] Pt(NH 3 ) 2 (NO 3 ) 2 Dissolve in 200ml glacial acetic acid. The solution was stirred for 3 hours, keeping its temperature at 50°C, and then poured into a volume of 500 ml of 10% by weight acetic acid (platinum solution).
[0029] Put the amount corresponding to 100g Ru of Ru(NO)(NO 3 ) 3 Dissolve in 300 ml of glacial acetic acid to which a few ml of concentrated nitric acid have been added. The solution was stirred for three hours, keeping its temperature at 50°C. This solution was then poured into 500 ml volume of 10% by weight acetic acid (ruthenium solution).
[0030] Separately, the amount of Pr(NO 3 ) 2 Dissolve in 300 ml of glacial acetic acid to which a few ml of concentrated nitric acid have been added. The solution was stirred for three hours, keeping its temperature at 50°C. This solution was then poured into a volume of 500 ml of 10% by weight acetic acid (rare earth element solution). 480 ml of the ruthenium solution were mixed into 120 ml of th...
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