| Title | Converting furfural residue wastes to carbon materials for high performance supercapacitor |
|---|---|
| ID_Doc | 13378 |
| Authors | Guo, XY; Zhang, XS; Wang, YX; Tian, XD; Qiao, Y |
| Title | Converting furfural residue wastes to carbon materials for high performance supercapacitor |
| Year | 2022 |
| Published | Green Energy & Environment, 7, 6 |
| Abstract | Sustainable development based on the value-added utilization of furfural residues (FRs) is an effective way to achieve a profitable circular economy. This comprehensive work highlights the potential of FRs as precursor to prepare porous carbons for high performance supercapacitors (SCs). To improve the electrochemical performance of FR-based carbon materials, a facile route based on methanol pretreatment coupled with pre-carbonization and followed KOH activation is proposed. More defects could be obtained after methanol treatment, which is incline to optimize textural structure. The activated methanol treated FR-based carbon materials (AFRMs) possess high specific surface area (1753.5 m(2) g(-1)), large pore volume (0.85 cm(3) g(-1)), interconnected micro/mesoporous structure, which endow the AFRMs with good electrochemical performance in half-cell (326.1 F g(-1) at 0.1 A g(-1), 189.4 F g(-1) at 50 A g(-1) in 6 mol L-1 KOH). The constructed symmetric SCs based on KOH, KOH-K3Fe(CN) 6 and KOH-KI electrolyte deliver energy density up to 8.9, 9.9 and 10.6 Wh kg(-1) with a capacitance retention of over 86% after 10,000 cycles. Furthermore, the self-discharge can be restrained by the addition of K3Fe(CN)(6) and KI in KOH electrolyte. This study provides an effective approach for high-valued utilization of FR waste. (c) 2021 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. |
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