摘要
以高活性铝阳极为负极，以还原水中溶解氧的水阴极为正极的铝－水电池，在３％和０．１％的食盐水中以９７Ω恒电阻放电，其输出电压分别为１．４Ｖ和１．３Ｖ。其在淡水湖泊中以９７Ω恒电阻放电时的输出电压也达到１．３Ｖ。高活化的铝阳极在淡水中能在电流密度小于２ｍＡ／ｃｍ２时，以－１．２Ｖ以上的电位正常阳极溶解。其利用率也达到８０％以上。水阴极在３％的ＮａＣｌ溶液中的工作电流密度可达到０．７ｍＡ／ｃｍ２，在０．１％的ＮａＣｌ溶液中其工作电流密度仍可达０．３ｍＡ／ｃｍ２。铝－水电池在流动电解液中放电时产物能正常脱落。理论设计的２５Ｗ铝－水电池在海水和淡水中的比能量分别为１９２０Ｗｈ／ｋｇ和１４３０Ｗｈ／ｋｇ。
The Al H 2O battery with superactivated aluminium as anode, sea water or fresh water as electrolyte, and dissolved oxygen (in water)as depolarizer, was studied. The output voltage of the battery with 3% and 0.1% NaCl solution at 97Ω constant load was 1.4V and 1.3V respectively, and also, 1.3V was approached when discharged in fresh water lake with normally releasing of discharge product. The anodic dissolution of the super activated Al was capable of sustaining in fresh water at 2mA/cm 2 with potential high than -1.2V and the utilization of 80% was obtained. The operative current density of the cathode in 3% and 0.1% NaCl solution was 0.7 and 0.3mA/cm 2.The energy density of a theoretically designed 25W Al H 2O battery was 1920 Wh/kg in sea water and 1430 Wh/kg in fresh water.
出处
《电源技术》
CAS
CSCD
北大核心
1997年第1期11-14,27,共5页
Chinese Journal of Power Sources
关键词
铝-水电池
水电极
电池
制造
Al H 2O battery, water cathode, super activated aluminium anode
