Vertically-oriented graphene nanowalls: Growth and application in Li-ion batteries
| Autor: | Feifei Huang, Jieyang Wu, Junchi Fu, Ling Zhang, Qijin Cheng, Li Shuai, Qinru Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Argon Graphene Mechanical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Anode Nanomaterials Volumetric flow rate law.invention chemistry Chemical engineering law Materials Chemistry Deposition (phase transition) Tube furnace Electrical and Electronic Engineering 0210 nano-technology Carbon |
| Zdroj: | Diamond and Related Materials. 91:54-63 |
| ISSN: | 0925-9635 |
| Popis: | Vertically-oriented graphene nanowalls (VGNWs) have been successfully synthesized under different experimental conditions (such as flow rate of argon, growth temperature, plasma power as well as deposition time) on copper foils in the reactive methane and argon environment using a capacitively coupled plasma-enhanced horizontal tube furnace deposition system. It is shown that the morphology and structure of VGNWs can be effectively tailored by experimental conditions. Furthermore, the growth mechanism of VGNWs produced in the plasma-based approach has been investigated. The synthesized VGNWs are used as anode materials in Li-ion batteries and the batteries show outstanding cycle efficiency (~99%). The specific capacity of coin-type cells can be improved by adjusting the experimental parameters and reaches 400 mAh g−1 in the first charge-discharge cycle. This work is particularly important for the development of an advanced process for the synthesis and application of carbon-based nanomaterials. |
| Databáze: | OpenAIRE |
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