Study on Electrochemical Properties of Carbon Submicron Fibers Loaded with Cobalt-Ferro Alloy and Compounds

In this work, carbon submicron fiber composites loaded with a cobalt-ferric alloy and binary metal compounds were prepared by electrospinning high temperature annealing using acetone ferric as precursors polyacrylonitrile source. The phase transformation mechanism of the fiber-supported Co-Fe bimetallic compound during was investigated. electrochemical properties oxide self-supported electrode materials results show that at 138 °C, heterogeneous fibers cobalt acetylacetonate acetylacetone iron began to decompose 200 CoFe2O4 generated in fiber. As increases further, some are reduced alloy, two phases CoFe-Fe-alloy exist After cycles, specific capacity CF-P500 is 500 mAh g?1. composite material can be significantly improved introduction CoFe2O4. When oxides used for lithium-ion batteries, dealloying conversion reactions occur same time reverse process lithium intercalation, form synergistic effect, cobalt-iron electrical conductivity. Therefore, CoFe2O4/CoFe has an excellent performance.