研究論文
マグネシウム注水電池の放電特性
2017 年 67 巻 10 号 p. 503-510
詳細
2017 年 67 巻 10 号 p. 503-510
Water-activated magnesium batteries possess several favorable attributes for energy storage and lighting sources. In this article, a portable-sized magnesium battery which consisted of MnO2 positive electrodes (cathodes) and magnesium alloy negative electrodes (anodes), being activated by drops of water, was investigated. The anode and cathode potential as well as their electrochemical impedance under a constant current load was monitored to evaluate the effect of discharging cycles. It was revealed that the discharge behavior was initially controlled by the depletion of water, followed by the cease of cathode reaction and the accumulation of Mg(OH)2 at magnesium anode. The specific energy of four stacked cells was found to 71 Wh/kg.
