Graphene/phthalocyanine composites and binuclear metal phthalocyanines with excellent electrocatalytic performance to Li/SOCl2 battery

Two new series of binuclear metal phthalocyanines and graphene/phthalocyanine composites (M2(PcTN)2C(CF3)2, M2(PcTA)2C(CF3)2, M2(PcTN)2C(CF3)2-Gr and M2(PcTA)2C(CF3)2-Gr, M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II)) were synthesized and developed for high efficient catalysts to Li/SOCl2 battery. All the catalysts were characterized by IR, LRS, SEM, XRD, TEM and TGA. The capacity of the battery containing these catalysts increases by approximately 4.651-83.72% than that of the battery without them. Especially capacity of Fe2(PcTA)2C(CF3)2-Gr could increase by 83.72%. In addition, the catalytic activities between M2(PcTN)2C(CF3)2 and M2(PcTA)2C(CF3)2, M2(PcTN)2C(CF3)2 and M2(PcTN)2C(CF3)2-Gr, M2(PcTA)2C(CF3)2 and M2(PcTA)2C(CF3)2-Gr, M2(PcTN)2C(CF3)2-Gr and M2(PcTA)2C(CF3)2-Gr were made a comparison. The results indicated that activities of the catalysts were related to both the phthalocyanines rings and the conjugative effect. According to the relevant CV results, reasonable catalytic mechanisms were confirmed to explain the catalytic process.