Carbon fiber cloth supported interwoven {WS2} nanosplates with highly enhanced performances for supercapacitors
By Shang, Xiao; Chi, Jing-Qi; Lu, Shan-Shan; Gou, Jian-Xia; Dong, Bin; Li, Xiao; Liu, Yan-Ru; Yan, Kai-Li; Chai, Yong-Ming; Liu, Chen-Guang
Published in Applied Surface Science
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2017
Abstract
Abstract The interwoven {WS2} nanoplates supported on carbon fiber cloth (WS2/CFC) have been successfully synthesized by a facile solvothermal process. {XRD} and {XPS} confirm the formation of WS2/CFC. {SEM} images show the good dispersion of {WS2} nanoplates with interwoven structures on the surface of CFC. Thanks to the 3D framework of CFC, {WS2} nanoplates realize overall excellent-dispersion interwoven on the surface of {CFC} compared with pristine bulk {WS2} with severe aggregation. Moreover, {CFC} not only serves as excellent conductive substrate to accelerate electron transport rate, but also contributes to the close combination between {WS2} and {CFC} for long-term stability. The electrochemical measurements show that WS2/CFC exhibit a high specific capacitance of 399 F g?1 at 1.0 A g?1, demonstrating the obviously enhanced capability compared with pristine bulk WS2. Furthermore, WS2/CFC realizes ultra-stable cycling stability with 99% of retention of capacitance after 500 charge-discharge cycles. It may provide novel access of designing carbon-based transition metal disulfides composites for excellent super capacitive properties.
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