Metal-Organic Gel-Derived Fe x O y /Nitrogen-Doped Carbon Films for Enhanced Lithium Storage
| Autor: | Dong-Hui Yang, Xian-He Bu, Lingjun Kong, Jian Zhu, Ming Zhong |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Carbonization Polyacrylonitrile chemistry.chemical_element Nanoparticle 02 engineering and technology General Chemistry Thermal treatment Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences Biomaterials chemistry.chemical_compound Carbon film chemistry Chemical engineering General Materials Science Lithium 0210 nano-technology Biotechnology |
| Zdroj: | Small. 15:1804058 |
| ISSN: | 1613-6810 |
| Popis: | The development of cost-effective and flexible electrodes is demanding in the field of energy storage. Herein, flexible Fex Oy /nitrogen-doped carbon films (Fex Oy /NC-MOG) are prepared by facile electrospinning of Fe-based metal-organic gels (MOGs) followed by high-temperature carbonization. This approach allows the even mixing of fragile coordination polymers with polyacrylonitrile into flexible films while reserving the structural characteristics of coordination polymers. After thermal treatment, Fex Oy /NC-MOG films possess uniformly distributed Fex Oy nanoparticles and larger accessible surface areas than traditional Fex Oy -NC films without MOG. Taking advantage of the unique structure, Fex Oy /NC-MOG exhibits a superior rate performance (449.8 mA h g-1 at 5000 mA g-1 ) and long cycle life (629.3 mA h g-1 after 500 cycles at 1000 mA g-1 ) when used as additive-free anodes in lithium-ion batteries. |
| Databáze: | OpenAIRE |
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