可充碱锰电池用电解锰的研究(Ⅱ)

Research on Electrolytic Manganese Dioxide Used for Rechargeable Alkaline Zn/MnO2 Cells( I )

将前篇的EMD—Ti（A）样品进行充放电循环试验以确证其可充性。实验室批量制备出EMD—Ti（A）样品以备实际用途。由XRD、XPS等试验结果,确认由添加剂Ti（A）制备的EMD—Ti（A）样品中,Ti（Ⅳ）与EMD间有化学作用。从实验发现这种EMD-Ti（A）具有P—型半导体的特征,其空穴扩散系数Dh=1.49×10-7cm2·s-1。从实验中测算出这种EMD—Ti（A）与IC.No.1 EMD的质子扩散系数DH+分别为1.2×10（-10）与7.4×10（-11）cm2·S-1。进一步讨论这种EMD—Ti（A）的其他理化性能。

The experiments of charge and discharge cycles at constant current of EMD-Ti(A) sample in previous paper were repeatedly made to ascertain the reliability of its reversibility. Sample of EMD-Ti(A) in rather large amount had been prepared in the laboratory for practical purpose. From XRD,XPS and other experimental results it was conformed that this EMD-Ti(A) sample prepared from the additive Ti (A) surely to have Ti(IV) chemical combined with EMD. It was discovered that this EMD-Ti(A) sample behaved as P-type semiconductor. Its diffusion coefficient of hole ,Dh ,was calculated to be 1. 49 脳10-7 cm^2 鈥?s^(-1).From experiments,the diffusion coefficients of proton,>Dh+ >in this EMD-Ti(A) and IC. No. 1 EMD samples had been determined to be 1. 2 X 10-10 and 7. 4 X 10^(-11)cm^2. s^(-1) respectively. Other physicochemical characteristic properties of EMD-Ti(A) sample were observed and discussed.