Research improvement of hydrogen diffusion anode applied to aluminium reduction

Hall-Heroult aluminium electrolysis cells cannot conquer its shortcoming inherently including high energy consumption and high pollution.Aluminium electrolysis technology applying hydrogen diffusion anode(HDA) could show the huge advantages no matter compared to traditional aluminium electrolysis approach or other alternative ways in energy saving and environmental area.HDA had shown its excellent facility after being applied into normal temperature electrolysis and fuel cells,but could not be utilized into aluminium electrolysis realm.Key point regarding the application of HDA on aluminium electrolysis is that,how to find appropriate gas-electrode-electrolyte system,and how to control HF emission.Reactive dynamic simulation analysis based on the Gibbs free energy facilitated solving these sorts of problems.According to the conclusions,probably,nickel alloy could be competent to the electrode place,and HF emission problem could be solved by optimizing anode construction for removing water vapor produced from electrolysis.