Systematic control of α-Fe 2 O 3 crystal growth direction for improved electrochemical performance of lithium-ion battery anodes
α-Fe2O3 nanomaterials with an elongated nanorod morphology exhibiting superior electrochemical performance were obtained through hydrothermal synthesis assisted by diamine derivatives as shape-controlling agents (SCAs) for application as anodes in lithium-ion batteries (LIBs). The physicochemical ch...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/87237 http://hdl.handle.net/10220/45356 |
| _version_ | 1824455168738983936 |
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| author | Shen, Nan Keppeler, Miriam Stiaszny, Barbara Hain, Holger Maglia, Filippo Srinivasan, Madhavi |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Shen, Nan Keppeler, Miriam Stiaszny, Barbara Hain, Holger Maglia, Filippo Srinivasan, Madhavi |
| author_sort | Shen, Nan |
| collection | NTU |
| description | α-Fe2O3 nanomaterials with an elongated nanorod morphology exhibiting superior electrochemical performance were obtained through hydrothermal synthesis assisted by diamine derivatives as shape-controlling agents (SCAs) for application as anodes in lithium-ion batteries (LIBs). The physicochemical characteristics were investigated via XRD and FESEM, revealing well-crystallized α-Fe2O3 with adjustable nanorod lengths between 240 and 400 nm and aspect ratios in the range from 2.6 to 5.7. The electrochemical performance was evaluated by cyclic voltammetry and charge–discharge measurements. A SCA test series, including ethylenediamine, 1,2-diaminopropane, 2,3-diaminobutane, and N-methylethylenediamine, was implemented in terms of the impact on the nanorod aspect ratio. Varied substituents on the vicinal diamine structure were examined towards an optimized reaction center in terms of electron density and steric hindrance. Possible interaction mechanisms of the diamine derivatives with ferric species and the correlation between the aspect ratio and electrochemical performance are discussed. Intermediate-sized α-Fe2O3 nanorods with length/aspect ratios of ≈240 nm/≈2.6 and ≈280 nm/≈3.0 were found to have excellent electrochemical characteristics with reversible discharge capacities of 1086 and 1072 mAh g−1 at 0.1 C after 50 cycles. |
| first_indexed | 2025-02-19T03:33:55Z |
| format | Journal Article |
| id | ntu-10356/87237 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:33:55Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/872372023-07-14T15:50:57Z Systematic control of α-Fe 2 O 3 crystal growth direction for improved electrochemical performance of lithium-ion battery anodes Shen, Nan Keppeler, Miriam Stiaszny, Barbara Hain, Holger Maglia, Filippo Srinivasan, Madhavi School of Materials Science & Engineering BMW-NTU Future Mobility Research Lab Research Techno Plaza Energy Research Institute @ NTU (ERI@N) 2,3-diaminobutane 1,2-diaminopropane α-Fe2O3 nanomaterials with an elongated nanorod morphology exhibiting superior electrochemical performance were obtained through hydrothermal synthesis assisted by diamine derivatives as shape-controlling agents (SCAs) for application as anodes in lithium-ion batteries (LIBs). The physicochemical characteristics were investigated via XRD and FESEM, revealing well-crystallized α-Fe2O3 with adjustable nanorod lengths between 240 and 400 nm and aspect ratios in the range from 2.6 to 5.7. The electrochemical performance was evaluated by cyclic voltammetry and charge–discharge measurements. A SCA test series, including ethylenediamine, 1,2-diaminopropane, 2,3-diaminobutane, and N-methylethylenediamine, was implemented in terms of the impact on the nanorod aspect ratio. Varied substituents on the vicinal diamine structure were examined towards an optimized reaction center in terms of electron density and steric hindrance. Possible interaction mechanisms of the diamine derivatives with ferric species and the correlation between the aspect ratio and electrochemical performance are discussed. Intermediate-sized α-Fe2O3 nanorods with length/aspect ratios of ≈240 nm/≈2.6 and ≈280 nm/≈3.0 were found to have excellent electrochemical characteristics with reversible discharge capacities of 1086 and 1072 mAh g−1 at 0.1 C after 50 cycles. Published version 2018-07-30T04:07:37Z 2019-12-06T16:37:52Z 2018-07-30T04:07:37Z 2019-12-06T16:37:52Z 2017 Journal Article Shen, N., Keppeler, M., Stiaszny, B., Hain, H., Maglia, F., & Srinivasan, M. (2017). Systematic control of α-Fe2O3 crystal growth direction for improved electrochemical performance of lithium-ion battery anodes. Beilstein Journal of Nanotechnology, 8, 2032-2044. 2190-4286 https://hdl.handle.net/10356/87237 http://hdl.handle.net/10220/45356 10.3762/bjnano.8.204 en Beilstein Journal of Nanotechnology © 2017 Shen et al, licensee Beilstein-Institut. This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 13 p. application/pdf |
| spellingShingle | 2,3-diaminobutane 1,2-diaminopropane Shen, Nan Keppeler, Miriam Stiaszny, Barbara Hain, Holger Maglia, Filippo Srinivasan, Madhavi Systematic control of α-Fe 2 O 3 crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title | Systematic control of α-Fe
2
O
3
crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title_full | Systematic control of α-Fe
2
O
3
crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title_fullStr | Systematic control of α-Fe
2
O
3
crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title_full_unstemmed | Systematic control of α-Fe
2
O
3
crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title_short | Systematic control of α-Fe
2
O
3
crystal growth direction for improved electrochemical performance of lithium-ion battery anodes |
| title_sort | systematic control of α fe 2 o 3 crystal growth direction for improved electrochemical performance of lithium ion battery anodes |
| topic | 2,3-diaminobutane 1,2-diaminopropane |
| url | https://hdl.handle.net/10356/87237 http://hdl.handle.net/10220/45356 |
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