空气电极摆放方式对锌空气电池性能的影响

对比相同的空气电极在同样的锌空电池系统中采用不同摆放方式后产生的不同的放电特性,分析空气电极的摆放方式对电池放电性能的影响,进而分析锌空电池反应界面的特征。实验结果表明:随着空气电极暴露于空气中面积的增加,锌空电池的功率逐渐增加,锌空电池放电功率与空气电极暴露面积成非正比线性关系。进一步的实验表明:当空气电极全部被水淹时,反应效率为零;锌空电池的空气电极反应区域是暴露于空气中的部分,水淹部分不参加反应。水线位置的反应效率最大,占总功率的80%以上,并且电池的反应功率随着电极暴露于空气中面积的增大而增大,这是由于在水线位置氧气分子可以迅速地得到电解质中的电子。

Effects of laying styles of air electrodes on the performance of zinc-air batteries

The discharge experiments of same zinc-air batteries with same air electrodes and different laying styles are researched.Effects of laying styles of air electrodes on the battery discharge performance were analyzed.Features of reaction interfaces of zinc-air battery were also analyzed. The experiments showed that the power of zinc-air battery increased with the area growth which opened to the air,the relation between the power of zinc-air battery and the air electrode reaction area was the linear relations which was not the simple proportion relations.The reaction area was the air electrode which opened to the air,and the air electrode which submerged in liquid didn＇t react.The experiments data indicated that the discharge power of electrode section near the water surface was far more than other section,which was more than 80% of the total power of one air-zinc battery,and the reason was that the section had a very short distance to the electrolyte and the oxygen molecules easily gained electrons.