Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes
Superior lithium storage in Li2MnSiO4 cathodes was observed by altering carbon content during the formulation of electrodes. Initially, Li2MnSiO4 was prepared by a conventional solid-state reaction at 900 °C under Ar flow with a fixed amount of adipic acid, which acts as a gelating agent during synt...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/100159 http://hdl.handle.net/10220/24105 |
| _version_ | 1811683025500504064 |
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| author | Aravindan, Vanchiappan Karthikeyan, K. Kang, K. S. Yoon, W. S. Kim, W. S. Lee, Y. S. |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Aravindan, Vanchiappan Karthikeyan, K. Kang, K. S. Yoon, W. S. Kim, W. S. Lee, Y. S. |
| author_sort | Aravindan, Vanchiappan |
| collection | NTU |
| description | Superior lithium storage in Li2MnSiO4 cathodes was observed by altering carbon content during the formulation of electrodes. Initially, Li2MnSiO4 was prepared by a conventional solid-state reaction at 900 °C under Ar flow with a fixed amount of adipic acid, which acts as a gelating agent during synthesis. The phase formation was confirmed through powder X-ray diffraction measurements. Scanning electron microscope pictures indicate the particulate morphology of synthesized Li2MnSiO4 particles. Various compositions of electrodes were formulated using the conducting carbon (ketjen black) from 3 to 11 mg along with active material. All the fabricated electrodes were cycled in a Li/Li2MnSiO4 cell configuration to evaluate its lithium storage performance at 0.05 C rate. Among the electrodes, 42% carbon in the composite electrode exhibited a very stable discharge behaviour 140 mA h g−1 for 40 cycles at room temperature. Such storage performance was ascribed to the improved electronic conductivity of Li2MnSiO4 electrodes by incorporating carbon. This improvement was supported by electrochemical impedance spectroscopy measurements. Rate performance studies were also conducted and presented in the manuscript. |
| first_indexed | 2024-10-01T04:06:10Z |
| format | Journal Article |
| id | ntu-10356/100159 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:06:10Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1001592021-01-08T08:12:11Z Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes Aravindan, Vanchiappan Karthikeyan, K. Kang, K. S. Yoon, W. S. Kim, W. S. Lee, Y. S. Energy Research Institute @ NTU (ERI@N) DRNTU::Science::Chemistry::Crystallography::Electron microscopy Superior lithium storage in Li2MnSiO4 cathodes was observed by altering carbon content during the formulation of electrodes. Initially, Li2MnSiO4 was prepared by a conventional solid-state reaction at 900 °C under Ar flow with a fixed amount of adipic acid, which acts as a gelating agent during synthesis. The phase formation was confirmed through powder X-ray diffraction measurements. Scanning electron microscope pictures indicate the particulate morphology of synthesized Li2MnSiO4 particles. Various compositions of electrodes were formulated using the conducting carbon (ketjen black) from 3 to 11 mg along with active material. All the fabricated electrodes were cycled in a Li/Li2MnSiO4 cell configuration to evaluate its lithium storage performance at 0.05 C rate. Among the electrodes, 42% carbon in the composite electrode exhibited a very stable discharge behaviour 140 mA h g−1 for 40 cycles at room temperature. Such storage performance was ascribed to the improved electronic conductivity of Li2MnSiO4 electrodes by incorporating carbon. This improvement was supported by electrochemical impedance spectroscopy measurements. Rate performance studies were also conducted and presented in the manuscript. 2014-10-21T09:22:16Z 2019-12-06T20:17:36Z 2014-10-21T09:22:16Z 2019-12-06T20:17:36Z 2011 2011 Journal Article Aravindan, V., Karthikeyan, K., Kang, K. S., Yoon, W. S., Kim, W. S., & Lee, Y. S. (2011). Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes. Journal of materials chemistry, 21(8), 2470-2475. https://hdl.handle.net/10356/100159 http://hdl.handle.net/10220/24105 10.1039/c0jm03471a 156423 en Journal of materials chemistry © 2011 The Royal Society of Chemistry. 6 p. |
| spellingShingle | DRNTU::Science::Chemistry::Crystallography::Electron microscopy Aravindan, Vanchiappan Karthikeyan, K. Kang, K. S. Yoon, W. S. Kim, W. S. Lee, Y. S. Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title | Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title_full | Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title_fullStr | Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title_full_unstemmed | Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title_short | Influence of carbon towards improved lithium storage properties of Li2MnSiO4 cathodes |
| title_sort | influence of carbon towards improved lithium storage properties of li2mnsio4 cathodes |
| topic | DRNTU::Science::Chemistry::Crystallography::Electron microscopy |
| url | https://hdl.handle.net/10356/100159 http://hdl.handle.net/10220/24105 |
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