Preparation and Li+ storage properties of hierarchical hollow porous carbon spheres |
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| Institution: | 1. Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan;2. Department of Biochemistry, Memorial University of Newfoundland, St. John''s, NL, Canada;3. Department of Food Science, Rutgers University, New Brunswick, NJ 08901-8520, USA;4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan;5. Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan |
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| Abstract: | Hollow ordered porous carbon spheres (HOPCS) with a hierarchical structure were prepared by templating with hollow ordered mesoporous silica spheres (HOMSS). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that HOPCS exhibited a spherical hollow morphology. High-resolution TEM, small angle X-ray diffraction (SAXRD) and N2 sorption measurements confirmed that HOPCS inversely replicated the unconnected hexagonal-stacked pore structure of HOMSS, and possessed ordered porosity. HOPCS exhibited a higher storage capacity for Li+ ion battery (LIB) of 527.6 mA h/g, and good cycling performance. A large capacity loss during the first discharge–charge cycle was found attributed to the high content of micropores. The cycling performance was derived from the hierarchical structure. |
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| Keywords: | Hierarchical structure MCM-41 silica Nanostructured carbon Lithium storage |
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