准中性锌空气电池的研究

采用循环伏安和线性电流扫描等电化学方法系统研究了NaCl、KCl、NH4Cl、(NH4) 2 SO4等电解质溶液对锌电极和空气电极电化学行为以及锌空气电池放电特性的影响。电极电势和电池电压表明NH4Cl电解质特性相对较好 ;而且添加适量KCl既有利于提高电池的工作电压 ,又能减小锌电极的自腐蚀 ;4mol/LNH4Cl 1mol/LKCl是一种放电性能较好的锌空气电池用准中性电解液

Studies on the zinc-air cell with quasi-neutral electrolytes

The effect of electrolyte solutions, such as NaCl, KCl, NH 4Cl, (NH 4) 2SO 4, on the electrochemical behavior of zinc/air electrodes and discharge characteristics of Zn air cell were studied by means of cyclic voltammetry and linear current scan method. The results of the potential of electrodes and the voltage of cell show that the NH 4Cl has the relative best electrolyte characteristics among the electrolytes mentioned above. Moreover, adding appropriate amount of KCl into NH 4Cl electrolyte solution is favorable to increase the operating voltage of Zn air cell and decrease the self corrosion of zinc electrode. 4 mol/L NH 4Cl 1 mol/L KCl is concluded to be an ideal quasi neutral electrolyte with good discharge performance for Zn air cell.