ZIF-67-Derived CoSe/NC Composites as Anode Materials for Lithium-Ion Batteries
| Autor: | Zongyang Li, Lian Ying Zhang, Lei Zhang, Jiamu Huang, Hongdong Liu |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-11 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1931-7573 1556-276X |
| DOI: | 10.1186/s11671-019-3194-5 |
| Popis: | Abstract As a typical metal selenide, CoSe is a kind of foreground anode material for lithium-ion batteries (LIBs) because of its two-dimensional layer structure, good electrical conductivity, and high theoretical capacity. In this work, the original CoSe/N-doped carbon (CoSe/NC) composites were synthesized using ZIF-67 as a precursor, in which the CoSe nanoparticles are encapsulated in NC nanolayers and they are connected through C–Se bonds. The coating structure and strong chemical coupling make the NC nanolayers could better effectively enhance the lithium storage properties of CoSe/NC composites. As a consequence, the CoSe/NC composites deliver a reversible capacity of 310.11 mAh g−1 after 500 cycles at 1.0 A g−1. Besides, the CoSe/NC composites show a distinct incremental behavior of capacity. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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