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Three-Dimensional Hybrid Nanostructures of $Fe_{3}O_{4}$ Nanoparticles/Vertically-Aligned Carbon Nanotubes for High-Performance Supercapacitors
| Content Provider | MDPI |
|---|---|
| Author | Zhao, Bin |
| Copyright Year | 2022 |
| Description | A three-dimensional (3D) hybrid nanostructure of $Fe_{3}O_{4}$ nanoparticles uniformly anchored on vertically-aligned carbon nanotubes (VACNTs) was fabricated by a facile two-step method. Assisted by supercritical carbon dioxide $(SCCO_{2}$), the Fe precursor was firstly absorbed on CNT surface and then transformed into $Fe_{3}O_{4}$ nanoparticles by vacuum thermal annealing. Owing to the synergetic effects of well-distributed $Fe_{3}O_{4}$ nanoparticles (~7 nm) and highly conductive VACNTs, the hybrid electrode exhibits a high specific capacitance of 364.2 F $g^{−1}$ at 0.5 A $g^{−1}$ within the potential range from −0.9 to +0.1 V in $Na_{2}SO_{3}$ electrolyte and an excellent cycling stability of 84.8% capacitance retention after 2000 cycles at a current density of 4 A/g. This 3D hybrid architecture consisting of aligned CNTs and pseudocapacitive metal oxide may be a promising electrode for high-performance supercapacitors. |
| Ending Page | 519 |
| Page Count | 13 |
| Starting Page | 507 |
| e-ISSN | 26733293 |
| DOI | 10.3390/electrochem3030035 |
| Journal | Electrochem |
| Issue Number | 3 |
| Volume Number | 3 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-26 |
| Access Restriction | Open |
| Subject Keyword | Electrochem Industrial Engineering Scco2 Fe3o4/vacnts Hybrid Electrode Supercapacitor |
| Content Type | Text |
| Resource Type | Article |
