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http://hdl.handle.net/10397/96082
Title: | Thickness-dependent fracture of amorphous carbon coating on SnO2 nanowire electrodes | Authors: | Li, Q Li, W Feng, Q Wang, P Mao, M Liu, J Zhou, L Wang, H Yao, H |
Issue Date: | Dec-2014 | Source: | Carbon, Dec. 2014, v. 80, p. 793-798 | Abstract: | Carbon-coated SnO2 nanowires (NWs) were fabricated and applied as electrode to study the lithiation process using in situ transmission electron microscopy. A critical coating thickness (~9 nm) was found, above which the carbon coating is able to constrain the lithiation-induced expansion of SnO2 core without failure. Theoretical modeling and numerical simulation were performed and revealed that such thickness-dependent fracture can be attributed to the thickness-dependent maximum stress developed in the carbon coating during the lithiation of SnO2 core. Our work provides direct evidence of the mechanical robustness of thick carbon coating and offers a minimum thickness of carbon coating for constraining the deformation of anode materials with large lithiation-induced volume change. | Publisher: | Pergamon Press | Journal: | Carbon | ISSN: | 0008-6223 | EISSN: | 1873-3891 | DOI: | 10.1016/j.carbon.2014.09.035 | Rights: | © 2014 Elsevier Ltd. All rights reserved. © 2014. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Li, Q., Li, W., Feng, Q., Wang, P., Mao, M., Liu, J., ... & Yao, H. (2014). Thickness-dependent fracture of amorphous carbon coating on SnO2 nanowire electrodes. Carbon, 80, 793-798 is available at https://doi.org/10.1016/j.carbon.2014.09.035. |
Appears in Collections: | Journal/Magazine Article |
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Thickness-dependent_Fracture_Amorphous.pdf | Pre-Published version | 1.39 MB | Adobe PDF | View/Open |
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