Flocculent Cu Caused by the Jahn-Teller Effect Improved the Performance of Mg-MOF-74 as an Anode Material for Lithium-Ion Batteries
| Autor: | Jie Zheng, Yutong Duan, Xiaochun Li, Yifei Li, Changjian He, Yichuan Rui, Daoning Wu, Pinhua Rao, Bohejin Tang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Jahn–Teller effect chemistry.chemical_element 02 engineering and technology Conductivity engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Ion Anode chemistry Coating Chemical engineering engineering General Materials Science Lithium 0210 nano-technology Current density |
| Zdroj: | ACS applied materialsinterfaces. 12(47) |
| ISSN: | 1944-8252 |
| Popis: | Mg-MOF-74/Cu was synthesized by a one-step method and then using the product as a lithium-ion anode material. The flocculent Cu caused by the Jahn-Teller effect conspicuously improves the electrochemical performance of Mg-MOF-74 by enhancing the conductivity of electrode materials. The as-prepared materials exhibited superior rate performance (298.3 mAh g-1 at a current density of 2000 mA g-1) and remarkable cyclability (a specific capacity of 534.5 mAh g-1 is obtained after 300 cycles at 500 mA g-1, which remains at 89.1%). In addition, an electrochemical test of coating an anode material on a stainless steel sheet has also been carried out, and the performance is comparable to that of traditional coating on copper foil (a reversible capacity of 531.7 mAh g-1 is collected, which retains 88.7% of initial capacity). The superior performance, facile one-step synthesis, and low cost of Mg-MOF-74/Cu show promise for practical applications. |
| Databáze: | OpenAIRE |
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