Heterogeneous carbon submicron fibers loaded with Co3O4/Co and elemental cobalt were prepared by electrospinning and annealing processes. The phase transformation mechanism of Co3O4 and elemental cobalt in heterogeneous submicron fibers at different annealing temperatures was studied. The electrochemical properties of carbon submicron fiber self-supported electrode materials loaded with Co3O4/Co and elemental cobalt were investigated. The experimental results show that the submicron fibers loaded with Co3O4/Co have better electrochemical performance because Co3O4 has large capacitance, the improved electro conductibility of cobalt metal, and the cellular structure of carbon submicron fibers, which provide sufficient ion transport channels while alleviating the changes in the structure and volume of Co3O4 during the cycle.
In this work, carbon submicron fiber composites loaded with a cobalt-ferric alloy and cobalt-ferric binary metal compounds were prepared by electrospinning and high temperature annealing using cobalt-ferric acetone and ferric acetone as precursors and polyacrylonitrile as a carbon source. The phase transformation mechanism of the carbon submicron fiber-supported Co-Fe bimetallic compound during high temperature annealing was investigated. The electrochemical properties of the carbon submicron fiber-supported Co-Fe alloy and Co-Fe oxide self-supported electrode materials were investigated. The results show that at 138 °C, the heterogeneous submicron fibers of cobalt acetylacetonate and acetylacetone iron began to decompose and at 200 °C, CoFe2O4 was generated in the fiber. As the annealing temperature increases further, some metal compounds in the carbon fiber are reduced to CoFe2O4 alloy, and two phases of CoFe2O4 and CoFe-Fe-alloy exist in the fiber. After 200 cycles, the specific capacity of CF-P500 is 500 mAh g−1. The specific capacity of the composite carbon submicron fiber electrode material can be significantly improved by the introduction of CoFe2O4. When the binary metal oxides are used as electrode materials for lithium-ion batteries, alloy dealloying and conversion reactions can occur at the same time in the reverse process of lithium intercalation, the two reactions form a synergistic effect, and the cobalt-iron alloy in the material increases the electrical conductivity. Therefore, the carbon submicron fiber loaded with CoFe2O4/CoFe has an excellent electrochemical performance.
CAN (Controller Area Network) is a kind of international standard, and the relatively high price-performance field bus, which in today's developments in the field of automatic control can play an important role. In the full understanding of field bus based on the theory, this paper presents a CAN-bus network communication with the 485 conversion module design.
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