Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7998860 | Journal of Alloys and Compounds | 2015 | 8 Pages |
Abstract
Two-dimensional transition metal chalcogenides are attracting increasing attention in energy storage due to their unique structures and electronic properties. CuS has been demonstrated with a metal-like electronic conductivity and a high theoretical capacity. In this work, a facile strategy was reported for one-step synthesis of acetylene black (AB) incorporated layered CuS nanosheet via a simple solvothermal route. X-ray diffraction, Raman spectroscopy, scanning electron microscopy and transmission electron microscopy were used to investigate the morphologies and microstructures of the as-prepared materials. Electrochemical data showed that the CuS/AB composites displayed a high specific capacitance of 2981Â F/g at 1.0Â A/g and retained 64.6% (1924.5Â F/g) at a high current density of 20Â A/g, indicative of good rate capability. Furthermore, the composites retained approximately 92% of the initial specific capacitance after 600 cycles at a current density of 1.0Â A/g, demonstrating good cycling stability. The outstanding electrochemical properties of the CuS/AB composite suggested that it had great potential for practical applications in high-performance supercapacitors and the present synthesis strategy maybe readily extended to the preparation of other composites based on CuS for potential applications in energy storage and conversion devices.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ke-Jing Huang, Ji-Zong Zhang, Yu-Ling Jia, Ke Xing, Yan-Ming Liu,