Facile synthesis of tin phosphide/reduced graphene oxide composites as anode material for potassium-ion batteries
| Autor: | Zhicheng Wang, Shi Tao, Wanwan Yang, Jingyuan Zhang, Dajun Wu, Jian Wang, Qian Bin, Da Huo, Shuo Sun |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Graphene Phosphide General Chemical Engineering General Engineering Oxide General Physics and Astronomy chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage 0104 chemical sciences law.invention Anode chemistry.chemical_compound chemistry law General Materials Science Composite material 0210 nano-technology Tin |
| Zdroj: | Ionics. 25:4795-4803 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-019-03056-8 |
| Popis: | Potassium-ion batteries (PIBs) have been attractedattention in grid-scale energy storage owning to the earth-abundance and low cost. However, the progresses in PIBs chemistry have so far been hindered bylacking suitable electrode materials to host the relatively large K+ ions. Herein, we report tin phosphide/reduced graphene oxide (Sn4P3/RGO) composites used as anode material for PIBs,which was prepared via a high-energy ball-milling process. The coexistence of small Sn4P3 nanoparticles and RGO nanosheets endows the composites with improved electronic conductivity, highly structural integrity and superior electrochemical performance. When used as anode material for PIBs, a high reversible capacity of 452.6 mAh g−1 at 80 mA g−1, superior rate capability of 116.4 mAh g−1 at high current density of 800 mA g−1, and still remains 157.3 mAh g−1 at 600 mA g−1 after 60 cycles. This work provides experimental guideline to develop suitable and advanced anode materials for PIBs. |
| Databáze: | OpenAIRE |
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