Unknown

Dataset Information

0

A Wire-Shaped Supercapacitor in Micrometer Size Based on Fe3O4 Nanosheet Arrays on Fe Wire.


ABSTRACT: One-dimensional (1D, wire- and fiber-shaped) supercapacitors have recently attracted interest due to their roll-up, micrometer size and potential applications in portable or wearable electronics. Herein, a 1D wire-shaped electrode was developed based on Fe3O4 nanosheet arrays connected on the Fe wire, which was prepared via oxidation of Fe wire in 0.1 M KCl solution (pH 3) with O2-rich environment under 70 °C. The obtained Fe3O4 nanosheet arrays displayed a high specific capacitance (20.8 mF cm-1 at 10 mV s-1) and long cycling lifespan (91.7% retention after 2500 cycles). The excellent performance may attribute to the connected nanosheet structure with abundant open spaces and the intimate contact between the Fe3O4 and iron substrate. In addition, a wire-shaped asymmetric supercapacitor was fabricated and had excellent capacitive properties with a high energy density (9 µWh cm-2) at power density of 532.7 µW cm-2 and remarkable long-term cycling performance (99% capacitance retention after 2000 cycles). Considering low cost and earth-abundant electrode material, as well as outstanding electrochemical properties, the assembled supercapacitor will possess enormous potential for practical applications in portable electronic device.

SUBMITTER: Li G 

PROVIDER: S-EPMC6199038 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC8201185 | biostudies-literature
| S-EPMC6199108 | biostudies-literature
| S-EPMC8066179 | biostudies-literature
| S-EPMC6593019 | biostudies-literature
| S-EPMC6641328 | biostudies-literature
| S-EPMC7763561 | biostudies-literature
| S-EPMC6776962 | biostudies-literature
| S-EPMC7560743 | biostudies-literature
| S-EPMC6641241 | biostudies-literature
| S-EPMC10343819 | biostudies-literature