Research On Li/SOCl₂Battery For Electronic And Communication Equipment

Lithium thionyl chloride battery was new developed chemical energy in rencent years, it has advantages such as the high voltage, the large specific energy, the wide temperature range and the long storage life. But in the practical application, its disadvantages of hysteresis voltage and poor ability of large current work had influenced the industrial production and application of lithium thionyl chloride battery.In this study, two series of binuclear transition metal phthalocyanine complexes iron hexadecachlornated phthalocyanine (FePcCl16),2-D conjugated polymers of metal-porphyrazine P(MPzS8) were synthesized and the effect on lithium/thionyl chloride battery (Li/SOCl2) had been investigated under constant resistance using phthaloeyanines as eleetrocatalyst. The binder of chlorine-containing polymer was add during the electrode preparation process and the effect on Li/SOCl2had been investigated(1) Iron hexadecachlornated phthalocyanine(FePcCl16) was synthesized by using tetrachloro-phthalic anhydride, urea and FeCl2.H2O as raw materials. The products were analyzed by elemental analysis、IR and UV-vis spectra. FePcCl16had higher catalytic activity, especially to heavy load and lower temperature discharge and had fine inhibition to voltage lag and temperature rise while discharge. At normal temperature with the current density of40mA/cm2, the increasing of voltage and capacity of the ER34185type cell contained1.0g/L FePcCl16comparing with that of FePcCl16. free cell was174mV and830mAh, respectively.(2) The catalysis of2-D conjugated polymers of metal-porphyrazine P(MPzS8)[M=Fe(Ⅱ), Co(Ⅱ), Zn(Ⅱ) to lithium/thionyl chloride(Li/SOCl2) cell was studied. It was foune that P(MPzS8) had higher catalytic activity P(FePzS8)>P(CoPzS8)> P(ZnPzS8) to Li/SOCl2cell. When the cells contained0.0150% P(ZnPzS8)、P(CoPzS8)、P(FePzS8) were discharege at low temperature-40±2℃and current density of5mA/cm2, the discharge time prolonged for about20%,45%and55%, stable working voltage increased for about60mV、200mV and300mV; when discharege at room temperature25±5℃and current density of25mA/cm2, the discharge time prolonged for about8%,15%and15%, stable working voltage increased for about120mV、160mV and180mV, discharege voltage lagging time shortened for10s、15s and10s。(3) The binder of chlorine-containing polymer was add during the electrode preparation process. We measured the electrode material adsorption through the physical absorption of nitrogen and obtain the internal hole size, aperture distribution, surface area, etc. of electrode; analyzed external appearance property with electronic scanning electron microscopy(SEM). The cell of adding of the binder of chlorine-containing polymer during the electrode preparation process was discharege at low temperature-20±2℃and current resistance of1000Ω, the stable working voltage and the capacity increased for about226mV and90mAh, respectively; at low temperature-20±2℃and current resistance of330Ω, the stable working voltage and the capacity increased for about295mV and170mAh, respectively...