Facile Synthesis of FeS/C Composites as Electrode Material for Electrochemical Supercapacitors
摘要
In this study, FeS/C composite materials were prepared via a grinding method, using FeS powder as the active material and glucose as the carbon source. Bi2S3 and carbon additives were incorporated into the electrode to investigate their effects on the electrochemical behavior of the FeS/C composite electrode. Electrochemical measurements were performed on FeS/C composite electrodes with and without additives. The results indicated that the presence of carbon in the FeS/C composite significantly influenced the electrode’s electrochemical properties. The capacitance of the FeS/C electrode, derived from CV curves after 5 cycles, exceeded 100 F g−1, which is higher than the FeS electrode’s capacitance of approximately 80 F g−1. Additionally, the FeS/C electrode with additives exhibited a notable improvement in specific capacity, ranging from approximately 187 F g−1 in the first cycle to around 140 F g−1 after 5 cycles. The specific capacity obtained from GCD curves for the FeS/C sample with Bi2S3 additives reached approximately 168 F g−1. These findings demonstrate that Bi2S3 additives significantly enhance the capacitance and specific capacity of the FeS/C composite electrode.