Abstract
The preparation and characterization of a polyaniline–silver–sulfur nanotube composite were reported in this paper. The polyaniline–silver nanotube composite was synthesized via an oxidation-reduction method in the sodium dodecyl sulfate (SDS) solution. After being vulcanized, the polyaniline–silver–sulfur (Poly (AN–Ag–S)) nanotube composite was prepared as active cathode material and assembled into lithium–sulfur (Li–S) batteries with electrolyte and negative electrode materials. When the feed ratio of raw materials (aniline and AgNO3) was 2:1, the initial specific capacity of poly (AN–Ag–S) composite cells reached 1114 mAh/g. The specific capacity was kept at 573 mAh/g, and the capacity retention rate stayed above 51% after 100 cycles. The introduction of Ag into the composite cathode material can effectively solve the poor conductivity of sulfur and improve the Li–S battery performance.
Highlights
The preparation and characterization of a polyaniline–silver–sulfur nanotube composite were reported in this paper
The polyaniline–silver nanotube composite was synthesized via an oxidation-reduction method in the sodium dodecyl sulfate (SDS) solution
Composites with different Ag contents were similar with the curve of pure PANI
Summary
Polyaniline (PANI) has become the key research point in secondary battery cathode materials due to its reversible electrochemical redox capability [1]. Among all the metal materials, silver (Ag) shows the best conductivity and thermal stability [8] It has great value during the exploration of the PANI–Ag composite, especially in the application of secondary battery. It was found that the composite had the specific capacitance of 212 F/g, better than the pure PANI had It showed that this composite can be used as electrode material for the super capacitor. After 200 cycles, the specific capacitance was 94% of the initial specific capacitance It can be used as a potential electrode material for super capacitors. In this experiment, the preparation of a polyaniline–silver–sulfur nanotube composite was reported. The introduction of Ag into the composite cathode material can effectively enhance the conductivity and improve the high-rate performance of the battery
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