Bimetallic MOFs-Derived Hollow Carbon Spheres Assembled by Sheets for Sodium-Ion Batteries
| Autor: | Hui Yang, Ang Li, Chunli Zhou, Xuewei Liu, Xiaohong Chen, Haiyan Liu, Tao Liu, Huaihe Song |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Nanomaterials, Vol 12, Iss 21, p 3926 (2022) |
| Druh dokumentu: | article |
| ISSN: | 12213926 2079-4991 |
| DOI: | 10.3390/nano12213926 |
| Popis: | Metal-organic frameworks (MOFs) have attracted extensive attention as precursors for the preparation of carbon-based materials due to their highly controllable composition, structure, and pore size distribution. However, there are few reports of MOFs using p-phenylenediamine (pPD) as the organic ligand. In this work, we report the preparation of a bimetallic MOF (CoCu-pPD) with pPD as the organic ligand, and its derived hollow carbon spheres (BMHCS). CoCu-pPD exhibits a hollow spherical structure assembled by nanosheets. BMHCS inherits the unique hollow spherical structure of CoCu-pPD, which also shows a large specific surface area and heteroatom doping. When using as the anode of sodium-ion batteries (SIBs), BMHCS exhibits excellent cycling stability (the capacity of 306 mA h g−1 after 300 cycles at a current density of 1 A g−1 and the capacity retention rate of 90%) and rate capability (the sodium storage capacity of 240 mA h g−1 at 5 A g−1). This work not only provides a strategy for the preparation of pPD-based bimetallic-MOFs, but also enhances the thermal stability of the pPD-based MOFs. In addition, this work also offers a new case for the morphology control of assembled carbon materials and has achieved excellent performance in the field of SIBs. |
| Databáze: | Directory of Open Access Journals |
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