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Study on preparation of C3N4/MnCo2S4 composites and their capacitive properties
Received date: 2022-09-22
Online published: 2023-07-13
The C3N4/MnCo2S4 composites were prepared by coating MnCo2S4 with the exfoliated C3N4（carbon nitride） nanosheets as the protective coat in the hydrothermal process.With the assistance of the coating protection of C3N4 nanosheets，the C3N4/MnCo2S4 composite showed excellent specific capacitance and good cyclic stability.The specific capacitance of C3N4/MnCo2S4 electrode materials was 565 F/g，while the capacitance of MnCo2S4 was 468 F/g at a scan rate of 5 mV/s in 6 mol/L KOH electrolyte via the three-electrode system.At the current density of 1 A/g，the specific capacitance retention of MnCo2S4 and C3N4/MnCo2S4 electrode materials was about 77% and 83% after charging and discharging for 2 000 cycles，respectively.C3N4 nanosheets could prevent MnCo2S4 from peeling off on the nickel foam.The coating method of nanosheets provided a novel technical route to prepare electrode materials with high specific capacitance and good cyclic stability.
Key words： MnCo2S4; C3N4 nanosheets; preventing from peeling off; supercapacitor
WANG Jianfang , YANG Heping , LI Kaibin , CONG Shiqiang , ZHANG Bojie , GUO Shan . Study on preparation of C3N4/MnCo2S4 composites and their capacitive properties[J]. Inorganic Chemicals Industry, 2023 , 55(7) : 70 -74 . DOI: 10.19964/j.issn.1006-4990.2022-0571
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