Amino-substituted binuclear phthalocyanines bonding with multi-wall carbon nanotube as efficient electrocatalysts for lithium-thionyl chloride battery

In this work, carbon nanotubes (CNTs)-templated binuclear metallophthalocyanines (MTAPcCF 3 ) 2 C (M = Mn, Fe, Co, Ni, Cu, Zn) assemblies (MTAPcCF 3 ) 2 C–COOH–CNTs are designed and obtained. Whereafter, the structure and morphology of target products are analyzed by many means such as infrared, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. The electrocatalytic performances of lithium-thionyl chloride battery catalyzed by (MTAPcCF 3 ) 2 C–COOH–CNTs were carried out. The result shows that all catalysts can improve the battery performance including the discharge time and the initial voltage. The catalytic performance of (MTAPcCF 3 ) 2 C–COOH–CNTs is ordered following the central metal: Mn > Fe > Ni > Co > Cu > Zn. The cell capacity catalyzed by optimal catalyst (MnTAPcCF 3 ) 2 C–COOH–CNTs can expand to 28.08 mAˑh, with increase by 142.07%, and the (MnTAPcCF 3 ) 2 C–COOH–CNTs can extend the discharge time to 551.6 s. Besides, the reaction mechanism is presented on the basis of cyclic voltammetry measurements.