摘要
为了考察铝空气电池电解液pH值对其阴阳极电化学性能的影响,利用极化曲线、电化学阻抗谱、恒流放电曲线测量等方法对铝合金阳极和空气电极在3.5%NaCl溶液中的电化学行为进行了研究。结果显示:随pH值升高,铝合金的腐蚀速度先降低后升高;铝合金恒流放电1 200 s后,电极电位从低到高的pH值依次为3,11,5,7,9;当溶液pH=11时,空气电极表现出较好的极化性能和恒流放电性能。
The effect of electrolyte pH value on the electrochemical properties of Al-air batteries was investigated based on measurements of polarization curves, electrochemical impedance spectra and galvanostatic discharge curves. Results show that the corrosion rate of Al alloy firstly declines and then rises with increasing electrolyte pH value. After galvanostatic discharge for 1200 s, the Al electrode potential rises with varying electrolyte pH value in an order of 3, 11, 5, 7, and 9. When the electrolyte pH value is 11, the air electrode exhibits good polarization performance and galvanostatic discharge performance.
出处
《材料保护》
CAS
CSCD
北大核心
2012年第7期57-59,76,共3页
Materials Protection
关键词
电化学性能
铝空气电池
PH值
阴阳极性能
electrochemical properties
Al-air batteries
pH value
performance of cathode and anode
