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A comparative study on the performance of binary SnO 2 / NiO / C and Sn / C composite nano fi bers as alternative anode materials for lithium ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Agubra, Victor A. Zúñiga, Luis Flores, David Rigoberto Campos, Howard Villarreal, Jahaziel Alcoutlabi, Mataz |
| Copyright Year | 2016 |
| Abstract | The development of alternative anode materials out of flexible composite nanofibers has seen a growing interest. In this paper, binary carbon nanofiber electrodes of SnO2/NiO and Sn nanoparticles are produced using a scalable technique, Forcespinning (FS), and subsequent thermal treatment (carbonization). The Sn/C composite nanofibers were porous and flexible, while the SnO2/NiO composite nanofibers had “hairy-like” particles and pores on the fiber strands. The nanofiber preparation process involved the FS of Sn/PAN and SnO2/NiO/PAN solution precursors into nanofibers and subsequent stabilization in air at 280 C and calcination at 800 C under an inert atmosphere. The flexible composite nanofibers were directly used as working electrodes in lithium-ion batteries without a current collector, conducting additives, or binder. The electrochemical performance of the SnO2/NiO/C and Sn/C composite fiber anodes showed a comparable cycle performance of about 675 mAhg 1 after 100 cycles. However, the SnO2/NiO/C electrode exhibited a better rate performance than the Sn/C composite anode and was able to recover its capacity after charging with a higher current density. A postmortem analysis of the composite nanofiber electrode after the aging process revealed a heavily passivated electrode from the electrolyte decomposition by-products. The synthesis and processing methods used to produce these composite nanofibers clearly were a factor for the high rate capability and excellent cycle performance of these binary composite electrodes, largely on the account of the unique structure and properties of the composite nanofibers. © 2016 Published by Elsevier Ltd. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://faculty.utrgv.edu/mataz.alcoutlabi/articles/ElectrochimicaActa-2017.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
