Embedding CoMoO4 nanoparticles into porous electrospun carbon nanofibers towards superior lithium storage performance
| Autor: | Yonghong Cheng, Sanmu Xie, Chundong Wang, Tianhao Yao, Xiaogang Han, Jinkai Wang, Tianxi Liu, Jian-Wen Shi, Hongkang Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Carbon nanofiber Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Electrospinning 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Biomaterials Colloid and Surface Chemistry Chemical engineering Specific surface area Nanofiber 0210 nano-technology Porosity |
| Zdroj: | Journal of Colloid and Interface Science. 553:320-327 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2019.06.039 |
| Popis: | CoMoO4 nanoparticles have been successfully in-situ formed and simultaneously embedded within the porous carbon nanofibers (CoMoO4/CNFs) via a facile electrospinning-annealing strategy. The porous CoMoO4/CNFs exhibit a specific surface area of 255.3 m2/g and a pore volume of 0.52 cc/g with average pore diameter of 43.5 nm. The carbon content in the CoMoO4/CNFs can be readily controlled by adjusting the annealing temperature. When examined as anode materials for lithium ion batteries (LIBs), the CoMoO4/CNFs demonstrate superior electrochemical performance, delivering a high reversible capacity of 802 mA h/g after 200 cycles at 200 mA/g and a high-rate capacity of 574 mA h/g at 2000 mA/g. The excellent lithium storage behavior can be attributed to the incorporation of CoMoO4 nanoparticles into the porous N-doped graphitic carbon nanofibers, which efficiently buffer the volume changes of CoMoO4 upon lithiation/delithiation and maintain the overall electrode conductivity/integrity. |
| Databáze: | OpenAIRE |
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