التفاصيل البيبلوغرافية
| العنوان: |
Biomass-derived graphene-like carbon nanoflakes for advanced supercapacitor and hydrogen evolution reaction. |
| المؤلفون: |
Wang, Yun-Feng1 (AUTHOR), Zou, Shu-Jun1 (AUTHOR), Hu, Wen-Ping1 (AUTHOR), Wu, Fang-Fang1 (AUTHOR), Yang, Jia-Xiang1 (AUTHOR), Cen, Yao-Yu1 (AUTHOR), Yang, Die-Xue1 (AUTHOR), Hou, Zhi-Qiang1 (AUTHOR) hou_zq@sina.cn, Huang, Ke-Jing1,2 (AUTHOR) kejinghuang@163.com |
| المصدر: |
Journal of Alloys & Compounds. Dec2022, Vol. 928, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*HYDROGEN evolution reactions, *GRAPHITE oxide, *SUPERCAPACITOR electrodes, *VAN der Waals forces, *HYBRID materials, *CARBON |
| مستخلص: |
It is valuable that graphene-like carbon materials are prepared from the biomass resources due to their unique two-dimensional structure, heteroatom enriched, and high specific surface area. Herein, we use egg white and graphene oxides as precursor and employ post-hydrothermal carbonization approach, freeze-drying technique, carbonization, and activation methods by KOH to prepare the graphite carbon nanoflakes with Fe 7 C 3 @graphite carbon nanoflakes hybrid materials. Morphology tests imply that the formation of graphite carbon nanoflakes are mainly depended by activation step, it implies that carbon flakes are exfoliated via introducing K+ into carbon layers and further destroying the van der Waals force (VDWF). As a result, this hybrid materials exhibit an attractive capacitance (528 mF·cm−2 @1 mA·cm−2) and durability (91 @10 mA·cm−2, 4000 cycles). For hydrogen evolution reaction (HER), the as-collected samples also deliver a low overpotential and remarkable stability. We believe that the as-obtained hybrid materials have a greatly application value in energy storage devices. • A high-quality of biomass-based graphene carbon nanosheets are developed. • N/O-GCN/Fe 7 C 3 @GCN displays the high specific surface area and abundant micropore. • N/O-GCN/Fe 7 C 3 @GCN demonstrates the promising specific area capacity and durability. • N/O-GCN/Fe 7 C 3 @GCN also deliver a low overpotential and superior stability. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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