Study of Improvement of Power and Stability of Magnesium Air Battery - Influence of Cathode Materials and Structures on Battery Properties -

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  • マグネシウム空気電池の高出力・安定化に関する研究 －正極材料・構造の電池特性への影響－
  • マグネシウム クウキ デンチ ノ コウシュツリョク ・ アンテイカ ニ カンスル ケンキュウ : セイキョク ザイリョウ ・ コウゾウ ノ デンチ トクセイ エ ノ エイキョウ

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Abstract

Power and energy dependences of magnesium air batteries on the materials and structures of carbon cathodes are investigated for the purpose of developing a high power Mg-air battery. It is found that three-phase co-existing interface plays an important role to improve the power and energy properties. A new cathode structure having an enhanced cathode reaction was produced. The Mg-air battery with this new cathode generated 5 times more power and 2.5 times more energy, compared to that of conventional cathodes. Moreover, the cathode with a three-layered structure was fabricated for obtaining a better current density. The high power battery cell showed 72 W/kg of power density and 400 Wh/kg of energy density, which revealed a potential ability for various application, such as mobile phone, electric vehicle, and high power emergency power supply.

Journal

  • Journal of Smart Processing

    Journal of Smart Processing 7 (2), 65-72, 2018

    Smart Processing Society for Materials, Environment & Energy (High Temperature Society of Japan)

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