Therefore, at a constant potential of -0.25 V, 4 mL of a mixed solution of 0.1 mL·L-1 sulfuric acid +0.5 mL·L-1 sodium sulfate at a volume ratio of 1: 9 is added to the reaction system as a supporting electrolyte
Therefore, at a constant potential of -0.25 V, a 0.1mL-L-1 sulfuric acid mixture solution with a volume ratio of 1:9 is added to the reaction system as a support electrolyte.
Therefore, at a constant potential of - 0.25 V, a mixed solution of 0.1 ml · L-1 sulfuric acid + 0.5 ml · L-1 sodium sulfate with a volume ratio of 4 ml of 1:9 was added to the reaction system as the supporting electrolyte,