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Dramatically comprehensive improved electrochemical performances of symmetric and asymmetric supercapacitors under external magnetic field.
- Source :
- Chemical Communications; 9/18/2021, Vol. 57 Issue 73, p9216-9219, 4p
- Publication Year :
- 2021
-
Abstract
- Recently, magnetic field (MF) has been described as a potential way to improve the properties of electrode materials, which significantly enhances the ion diffusion behavior and material wettability. We first synthezised for the first time a comparable carbon-based electrode material (GCA) including active carbon, reduced graphene and carbon nanotubes through a facile stirring method for further research under MF. Herein, 0.15 T of MF induced by two NdFeB magnets was applied on the supercapacitor devices to enhance the energy density, which increased by about 62% for the symmetric supercapacitor (SSC: from 11.2 to 18.1 W h kg<superscript>−1</superscript>). An asymmetric supercapacitor composed of the prepared GCA as the anode and NiCoFe/NiCoFe–OH as the cathode was also assembled for research. And it was found that the whole electrochemical performance significantly improved (for example, energy density increased by about 22% for the asymmetric supercapacitor, i.e., from 50.6 to 61.4 W h kg<superscript>−1</superscript>). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 57
- Issue :
- 73
- Database :
- Complementary Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 152461751
- Full Text :
- https://doi.org/10.1039/d1cc03289e