dc.contributor.authorShen, Nan
dc.contributor.authorKeppeler, Miriam
dc.contributor.authorStiaszny, Barbara
dc.contributor.authorHain, Holger
dc.contributor.authorMaglia, Filippo
dc.contributor.authorSrinivasan, Madhavi
dc.identifier.citationShen, 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.en_US
dc.description.abstractα-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.en_US
dc.format.extent13 p.en_US
dc.relation.ispartofseriesBeilstein Journal of Nanotechnologyen_US
dc.rights© 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.en_US
dc.titleSystematic control of α-Fe 2 O 3 crystal growth direction for improved electrochemical performance of lithium-ion battery anodesen_US
dc.typeJournal Article
dc.contributor.researchEnergy Research Institute @NTUen_US
dc.contributor.researchResearch Techno Plazaen_US
dc.contributor.researchBMW-NTU Future Mobility Research Lab
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US

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