Chloride ion inhibition of electrochemical oscillations on the anode of an electrolytic manganese metal cell

Recovery and Utilization of Electrolytic Manganese Anode Slime for the High-Value Industrialized Products─A Review

“…Table S2 summarizes various techniques that have been used to reduce EMAS production at the source. As shown in Table S2, various methods, such as hyperchaotic current regulation, pulse electric field, ,, and the addition of NaOL and Cl – have been suggested to reduced energy consumption and EMAS production. In addition, new equipment, such as titanium-plated plates and an improved integrated electrolysis cell, have been developed to reduce EMAS production.…”

“…Chloride ions can produce chlorides, which could decrease EMAS production, reduce electrochemical oscillation, and further lower energy consumption. When the concentration of Cl – was 2.68 g/L, the cathode and anode electrodes could be effectively activated, and the manganese current efficiency reached its minimum; correspondingly, the power consumption reached its maximum . Similarly, after NaOL is added into the electrolyte, a layer of oxide with a relatively flat and dense structure is deposited onto the anode surface.…”

“…When the concentration of Cl − was 2.68 g/L, the cathode and anode electrodes could be effectively activated, and the manganese current efficiency reached its minimum; correspondingly, the power consumption reached its maximum. 35 Similarly, after NaOL is added into the electrolyte, a layer of oxide with a relatively flat and dense structure is deposited onto the anode surface. The combination of OL − and Mn 2+ inhibited the formation of Mn oxides and then influenced potential oscillation behaviors.…”