Electrochemical Effects of Lithium-Thionyl Chloride Battery by Central Metal Ions of Phthalocyanines-Tetraacetamide Complexes

Metal phthalocyanines–tetraacetamide (MPcTca, M = Fe(III), Fe(II), Co(II), Ni(II), Cu(II), Mn(II), Ru(III), Rh(III), Pd(II) and Ag(I)) are synthesized by in-situ solid method and characterized by elemental analysis and IR. The catalytic activity of MPcTca complexes to Li/SOCl2 battery is evaluated by the capacity of Li/SOCl2 battery at a constant resistance. The capacity of Li/SOCl2 battery catalyzed by MPcTca (M = Fe(II), Co(II), Ni(II), Mn(II), Rh(III), Pd(II) and Ag(I)) increases approximately 36∼72%, Ag2(I)PcTca and Pd(II)PcTca are the most effective, however, the capacity of Li/SOCl2 battery catalyzed by Fe(III)PcTcaCl and Ru(III)PcTcaCl increases merely approximately 10∼15%, Cu(II)PcTca is inactive to the battery. It shows that MPcTca which metal central ion with coordinating sites to SOCl2, low valence (I, II), big radius and the d filling full –filled or half full-filled, exhibits excellent catalytic activity to Li/SOCl2 battery. The MPcTcas with central metal ions (III) have low catalytic activity due to one coordination site occupied by chloride ion.