Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries
Novel corncob-shaped ZnFe2O4/C nanostructured composite materials have been successfully synthesized through a facile co-precipitation method with carbamide as carbonaceous matrix. The morphology and structure of the samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Royal Society of Chemistry
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/33065 |
| _version_ | 1848753842091458560 |
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| author | Mao, J. Hou, X. Wang, X. He, G. Shao, Zongping Hu, S. |
| author_facet | Mao, J. Hou, X. Wang, X. He, G. Shao, Zongping Hu, S. |
| author_sort | Mao, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Novel corncob-shaped ZnFe2O4/C nanostructured composite materials have been successfully synthesized through a facile co-precipitation method with carbamide as carbonaceous matrix. The morphology and structure of the samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and transition electron microscopy (TEM), and the physical and electrochemical properties were tested by thermogravimetry and an electrochemical system. The corncob-shaped ZnFe2O4/C nanostructured anode materials exhibit outstanding cycling performance and rate capability in comparison with pure ZnFe2O4 anode materials. Electrochemical results show that the corncob-shaped ZnFe2O4/C nanocomposite materials exhibit an initial discharge capacity of approximately 1591.6 mA h g−1 with an initial coulombic efficiency of 80.4% at a constant density of 100 mA g−1. A reversible discharge capacity of 1119.1 mA h g−1 is still obtained after 100 cycles. The discharge capacities can still be as high as 889 mA h g−1 at a high rate of 4 C (1 C = 250 mA g−1). The excellent electrochemical performances are probably ascribed to the multiple synergetic factors that stem from their uniform nanoparticle size, complete crystallization with corncob shape, and organic pyrolysis of carbon inlaid in the corncob shaped nanostructure. The corncob-shaped ZnFe2O4/C nanocomposite will be a promising anode material for advanced lithium ion batteries. |
| first_indexed | 2025-11-14T08:30:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-33065 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:30:56Z |
| publishDate | 2015 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-330652017-09-13T15:29:35Z Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries Mao, J. Hou, X. Wang, X. He, G. Shao, Zongping Hu, S. Novel corncob-shaped ZnFe2O4/C nanostructured composite materials have been successfully synthesized through a facile co-precipitation method with carbamide as carbonaceous matrix. The morphology and structure of the samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and transition electron microscopy (TEM), and the physical and electrochemical properties were tested by thermogravimetry and an electrochemical system. The corncob-shaped ZnFe2O4/C nanostructured anode materials exhibit outstanding cycling performance and rate capability in comparison with pure ZnFe2O4 anode materials. Electrochemical results show that the corncob-shaped ZnFe2O4/C nanocomposite materials exhibit an initial discharge capacity of approximately 1591.6 mA h g−1 with an initial coulombic efficiency of 80.4% at a constant density of 100 mA g−1. A reversible discharge capacity of 1119.1 mA h g−1 is still obtained after 100 cycles. The discharge capacities can still be as high as 889 mA h g−1 at a high rate of 4 C (1 C = 250 mA g−1). The excellent electrochemical performances are probably ascribed to the multiple synergetic factors that stem from their uniform nanoparticle size, complete crystallization with corncob shape, and organic pyrolysis of carbon inlaid in the corncob shaped nanostructure. The corncob-shaped ZnFe2O4/C nanocomposite will be a promising anode material for advanced lithium ion batteries. 2015 Journal Article http://hdl.handle.net/20.500.11937/33065 10.1039/c5ra04790k Royal Society of Chemistry restricted |
| spellingShingle | Mao, J. Hou, X. Wang, X. He, G. Shao, Zongping Hu, S. Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title | Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title_full | Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title_fullStr | Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title_full_unstemmed | Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title_short | Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| title_sort | corncob-shaped znfe2o4/c nanostructures for improved anode rate and cycle performance in lithium-ion batteries |
| url | http://hdl.handle.net/20.500.11937/33065 |