Amorphous carbon shell on Si particles fabricated by carbonizing of polyphosphazene and enhanced performance as lithium ion battery anode
| Autor: | Angang Song, Shilin Zhang, Qian Wang, Junhua Hu, Guoqin Cao, Peng Wang, Peiling Yuan, Caili Zhang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Carbonization Mechanical Engineering 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Anode Amorphous carbon Coating Mechanics of Materials Precipitation polymerization engineering Particle General Materials Science Polyphosphazene Composite material 0210 nano-technology Faraday efficiency |
| Zdroj: | Materials Letters. 171:63-67 |
| ISSN: | 0167-577X |
| Popis: | A novel strategy was employed to introduce a carbon layer on Si particle to overcome the intrinsic poor electrical conductivity and significant volume change. The carbon layer was fabricated by forming polyphosphazene coating through a facile precipitation polymerization method, followed by carbonization. As a result of formation of core-shell structure, the Si anode exhibited improved cycling stability (740 mA h/g remained after 100 cycles) and rate capability (300 mA h/g at a rate 2C). In addition, 99% coulombic efficiency was remained after 100 cycles. |
| Databáze: | OpenAIRE |
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