Facile synthesis of copper-antimony-sulfide nanostructures on WO3 electrodes: Investigation of electrochemical performance

Add time:09/01/2019    Source:sciencedirect.com

In this study, copper-antimony-sulfide (CAS) nanostructures, including CuSbS2, Cu3SbS3, and Cu3SbS4, were synthesized from a Cu-Sb-S solution via ion deposition. The CAS nanostructures changed to more nanosheet-like structures after pH treatment with an ammonia solution (NH4OH). Additionally, the pH increased from 2.1 to 9.2, with the highest exchange current density, J0, of 0.523 mA/cm2, indicating high charge-storage capacity. The results revealed a faster response time for the de-intercalation/intercalation current, and improved breakdown potential. Furthermore, a morphological change occurred that yielded a larger active material surface; these changes increased electron transport and ion conductivity, and improved the charge-storage capability, demonstrating the high potential for use in electric double-layer capacitors, batteries, and energy-storage devices.

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