Nitrogen-Doped Banana Peel–Derived Porous Carbon Foam as Binder-Free Electrode for Supercapacitors
| Autor: | Xuhong Guo, Mingyuan Zhu, Zhuangzhi Zhao, Lili Zhang, Gang Wang, Peirong Qi, Zhang Boya, Bin Dai, Hui Chen, Bingzhi Liu, Feng Yu, Yanqing Ma |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
General Chemical Engineering Diffusion 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences Capacitance lcsh:Chemistry General Materials Science supercapacitor Composite material Supercapacitor Communication nitrogen doping Banana peel binder free 021001 nanoscience & nanotechnology porous carbon foam 0104 chemical sciences Chemical engineering energy conversion and storage lcsh:QD1-999 banana peel Electrode 0210 nano-technology Mesoporous material |
| Zdroj: | Nanomaterials, Vol 6, Iss 1, p 18 (2016) Nanomaterials |
| ISSN: | 2079-4991 |
| Popis: | Nitrogen-doped banana peel–derived porous carbon foam (N-BPPCF) successfully prepared from banana peels is used as a binder-free electrode for supercapacitors. The N-BPPCF exhibits superior performance including high specific surface areas of 1357.6 m2/g, large pore volume of 0.77 cm3/g, suitable mesopore size distributions around 3.9 nm, and super hydrophilicity with nitrogen-containing functional groups. It can easily be brought into contact with an electrolyte to facilitate electron and ion diffusion. A comparative analysis on the electrochemical properties of BPPCF electrodes is also conducted under similar conditions. The N-BPPCF electrode offers high specific capacitance of 185.8 F/g at 5 mV/s and 210.6 F/g at 0.5 A/g in 6 M KOH aqueous electrolyte versus 125.5 F/g at 5 mV/s and 173.1 F/g at 0.5 A/g for the BPPCF electrode. The results indicate that the N-BPPCF is a binder-free electrode that can be used for high performance supercapacitors. |
| Databáze: | OpenAIRE |
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