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Zeolitic Imidazolate Framework 67-Derived Ce-Doped CoP@N-Doped Carbon Hollow Polyhedron as High-Performance Anodes for Lithium-Ion Batteries
| Content Provider | MDPI |
|---|---|
| Author | Zhai, Yanjun Zhou, Shuli Guo, Linlin Xin, Xiaole Zeng, Suyuan Qu, Konggang Wang, Nana Zhang, Xianxi |
| Copyright Year | 2022 |
| Description | Zeolitic Imidazolate Framework 67 (ZIF-67) and its derivates have attracted extensive interest for lithium-ion batteries (LIBs). Here, Cerium-doped cobalt phosphide@nitrogen-doped carbon (Ce-doped CoP@NC) with hollow polyhedron structure materials were successfully synthesized via ionic-exchange with Co and Ce ions using the ZIF-67 as a template followed with a facile low-temperature phosphorization treatment. Benefitting from the well-designed hollow polyhedron, steady carbon network, and Ce-doping structural merits, the as-synthesized Ce-doped CoP@NC electrode demonstrated superior performance as the anode in LIBs: a superior cyclability (400 mA h $g^{−1}$ after 500 cycles) and outstanding rate-capability (590 mA h $g^{−1}$, reverted to 100 mA $g^{−1}$). These features not only produced more lithium-active sites for LIBs anode and a shorter Li-ion diffusion pathway to expedite the charge transfer, but also the better tolerance against volume variation of CoP during the repeated lithiation/delithiation process and greater electronic conductivity properties. These results provide a methodology for the design of well-organized ZIFs and rare earth element-doped transition metal phosphate with a hollow polyhedron structure. |
| Starting Page | 533 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst12040533 |
| Journal | Crystals |
| Issue Number | 4 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-04-11 |
| Access Restriction | Open |
| Subject Keyword | Crystals Environmental Engineering Environmental Sciences Hollow Polyhedron Ce-doped Cop N-doped Carbon Lithium-ion Batteries Anode |
| Content Type | Text |
| Resource Type | Article |
