非晶态MoS_3制备方法的改进与其电化学特性的研究

STUDY ON THE PHASE RELATION AND CONDUCTIVITY FOR THE BINARY Na_2Mo_(0.1)S_(0.9)O_4(α) AND NO-EARTH SULPHATE SYSTEMS

本文报导了用改进的水溶液酸化沉淀法制备非晶态三硫化钼。并对该材料的导电特性、用作锂电池阴极材料的放电特性以及循环伏安特性进行了研究。

The phase relation and conductivity for the binary Na_2Mo_(0.1)S_(0.9)O_4(α) and no-earth sulphate systems has been researched using XRD, DTA and electrical measurment technique. It has been found that the electrical conductivity can reach the order of 10^(-3) in the system doped with 8m/o CaSO_4at 280℃, which is similar to the effect of doping earth sulphates, but there is still phase transition in the binary system. The reason why the electrical conductivity can be considerably increased and the phase transition exists after doped with aliovalent ions has also been discussed.