Effect of Na₂SO₄ on the Performance of Mg-Air Battery

Abstract:

In this study, an Mg-air battery based on air cathode with different content of Na₂SO₄ was prepared to study the effect of Na₂SO₄ on the performance of Mg-air battery. The electrochemical performance of the air cathode was studied by potentiodynamic polarization and electrochemical impedance spectroscopy. The results indicated that the electrochemical activity of the electrode enhanced with the increasing Na₂SO₄. The discharge performance of the battery was investigated by constant-current discharge test, and the results showed that the discharge potential of the battery also improved with the increasing of Na₂SO₄. However, the forming of air cathode became difficult gradually with the increasing content of Na₂SO₄. What is worse, the oversize pore produced in the moisture barrier when the content of Na₂SO₄ was too high and the moisture barrier would lose resistance to water. So the content of Na₂SO₄ should not be too high.

• Periodical: Materials Science Forum (Volume 847)
• Pages: 46-49
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.847.46
• Online since: March 2016
• Authors: Yan Chun Zhao, Guang Sheng Huang*, Ding Kai Liu, Ting Zhuang Han, Fu Sheng Pan
• Keywords: Air Cathode, Electrochemical, Magnesium Alloy, Mg-Air Battery, Na₂SO₄

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