Formation of NixCo3−xS4 Hollow Nanoprisms with Enhanced Pseudocapacitive Properties |
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| Authors: | Le Yu Dr. Lei Zhang Hao Bin Wu Prof. Xiong Wen Lou |
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| Affiliation: | School of Chemical and Biomedical Engineering, Nanyang, Technological University, 62 Nanyang Drive, 637459 (Singapore) http://www.ntu.edu.sg/home/xwlou/ |
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| Abstract: | Hollow nanostructures are of great interest for a wide variety of applications. Despite the great advances, synthesis of anisotropic hollow structures is still very challenging. In this work, we have developed a simple sacrificial template method to synthesize uniform NixCo3?xS4 hollow nanoprisms with tunable composition. Tetragonal nanoprisms of nickel–cobalt acetate hydroxide precursors with controllable Ni/Co molar ratios are first synthesized and used as the sacrificial templates. After a sulfidation process with thioacetamide (TAA) in ethanol, the solid precursor prisms can be transformed into the corresponding NixCo3?xS4 hollow nanoprisms with a well‐defined hollow interior. The intriguing structural and compositional features are beneficial for electrochemical applications. Impressively, the resultant NixCo3?xS4 hollow prisms manifest a high specific capacitance with enhanced cycling stability, making them potential electrode materials for supercapacitors. |
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| Keywords: | cobalt nanostructures nickel prisms supercapacitors |
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