Effects of anti-corrosion for high performance of magnesium air fuel cell (MAFC)

Magnesium air fuel cell (MAFC) is a low cost and high energy density fuel cell that applies the electrolysis concept to generate electricity and reduce phosphorus concentration in wastewater treatment. However, corrosion caused by hydrogen evolution rate (HER) and formation of Mg precipitates hinder...

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Bibliographic Details
Main Authors: Ahmad, Mismisuraya Meor, Ahmad, Dg Asilah Ag, Basri, Sahriah
Format: Conference Proceeding
Language:English
Subjects:
Catechol
Concentration cell corrosion
Corrosion
Corrosion effects
Corrosion prevention
Durability
Electricity
Electrolysis
Electrolytes
Fuel cells
Hydrogen evolution
Magnesium base alloys
Parameters
Performance evaluation
Phosphorus
Precipitates
Sodium chloride
Sodium phosphate
Wastewater treatment
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Summary:Magnesium air fuel cell (MAFC) is a low cost and high energy density fuel cell that applies the electrolysis concept to generate electricity and reduce phosphorus concentration in wastewater treatment. However, corrosion caused by hydrogen evolution rate (HER) and formation of Mg precipitates hinders performance of MAFC. Thus, the effect of anti-corrosion chemicals was analyzed by using two different types, catechol-3, 5-disulfonic acid disodium salt (Tiron) and sodium phosphate (Na3PO4). The anti-corrosion chemical was added to the MAFC where it consists of Mg alloy of AZ series plat (AZ31) as anode, air as cathode and sodium chloride (NaCl) as electrolytes. HER test was employed to analyze the effect of anti-corrosion chemicals where NaCl were varied to 5, 7.5 and 10 wt.%. Based on the HER test analysis, Na3PO4 and 5 wt.% NaCl were showed the suitable parameters where gave the low rate of HER. These parameters were further used to evaluate the performance of MAFC. The durability test and phosphorus concentration reduction analysis were applied to evaluate this performance. The cell showed the durability within 10 days. Meanwhile, the Phosphorus concentration showed reduction with 60.62% of recovery efficiency. Therefore, MAFC is expected to bring a good benefit and new perspective in generating electricity and treating wastewater.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0114470