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Pyrolysis of zinc salt-treated flax fiber: Hierarchically porous carbon electrode for supercapacitor.
- Source :
-
Diamond & Related Materials . Nov2022, Vol. 129, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Achieving a simple and mild preparation method to obtain high performance carbon-based flax fiber electrode for supercapacitor has become particularly important but still challenges. Hence, the excellent electrochemical performance of electrode was constructed by impregnation-heat treatment with ethylenediamine tetraacetic acid disodium zinc (EDTANa 2 Zn) and zinc nitrate (ZnNO 3) as activators. The results show that the decomposed zinc oxide (ZnO) of EDTANa 2 Zn leads to the prominently hierarchical porous structure and abundant nitrogen-doping, which provides more active storage sites for electrolyte. Likewise, the as-prepared electrode by EDTANa 2 Zn treatment exhibits the specific capacitance of 292 F g−1 at the current density of 0.5 A g−1, and keeps up with the capacitance retention of 102 % even after a 10, 000 long-cycles at the high current density of 10 A g−1. Significantly, the suitable zinc salt assisted preparation of high performance flax fiber carbon-based electrode provides a novel idea for future electrochemical energy storage. [Display omitted] • The obtained electrode was constructed by EDTANa 2 Zn and zinc nitrate. • The 950-EA electrode exhibits the specific capacitance of 292 F g−1–0.5 A g−1 • The 950-EA electrode keeps up with the capacitance retention of 102 % after 10,000 cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09259635
- Volume :
- 129
- Database :
- Academic Search Index
- Journal :
- Diamond & Related Materials
- Publication Type :
- Academic Journal
- Accession number :
- 159565362
- Full Text :
- https://doi.org/10.1016/j.diamond.2022.109339