... Aluminum Anodizing Products in aluminum or aluminum alloy for the anode placed in electrolyte solution, the use of electrolysis to the ... the following release H2: 2H + +2 e ===H2 On the anode, 4OH - 4e ===2H2O + O2, the oxygen precipitation is not only ... ), usually in response to molecular oxygen that. Aluminum as the anode was the last of the oxygen precipitation by oxidation, the ...