Study On The Catalytic Performance Of Binuclear Phthalocyanine And Its Compound With Graphene On Lithium/thionyl Chloride Batteries

As one of new energy,lithium/thionyl chloride(Li/SOCl2)battery has been widely used in military and industrial areas due to its high working voltage and large energy density.Therefore,how to improve the service life of Li/SOCl2 battery and overcome the voltage delay has become the important content of modern research.It is significant to exploit battery catalysts to improve its electrochemical performance.Many studies have shown that phthalocyanines compounds especially binuclear phthalocyanines compounds which have good catalytic activities for Li/SOCl2 battery have attracted wide attention of researchers.In this paper,with 4-nitrophthalimide,4,4'-(hexafluoroisopropylidene)diphthalic anhydride and 4,4'-oxydiphthalic anhydride acting as precursor,two series of binuclear transition metal phthalocyanines(M2(PcTN)2C(CF3)2 and M2(PcTN)2O)are synthesized via liquid phase method.And then,sodium sulphide is used as reducing agent in order to get the amino binuclear metal phthalocyanines(M2(PcTA)2C(CF3)2 and M2(PcTA)2O).These compounds are characterized by EA,IR,RS,UV-vis,SEM,XRD and thermal analysis.With large conjugated system,good thermal stability and electrochemical properties,graphene is widely used in a variety of catalysis areas.Graphene-phthalocyanines hybrid materials(M2(PcTN)2C(CF3)2-Gr,M2(PcTN)2O-Gr,M2(PcTA)2C(CF3)2-Gr and M2(PcTA)2O-Gr)are synthesized through a strong ?-? interaction between graphene and phthalocyanines and characterized by IR,RS,TEM,SEM,XRD and thermal analysis.All the binuclear phthalocyanines and graphene-phthalocyanines complexes are used as catalysts for improving the catalytic performance of Li/SOCl2 battery.The catalytic mechanism of the catalysts is speculated and demonstrated by the cyclic voltammetric analysis.