Unknown

Dataset Information

0

Iron Sulfide Microspheres Supported on Cellulose-Carbon Nanotube Conductive Flexible Film as an Electrode Material for Aqueous-Based Symmetric Supercapacitors with High Voltage.


ABSTRACT: Nanostructured iron disulfide (FeS2) was uniformly deposited on regenerated cellulose (RC) and oxidized carbon nanotube (CNT)-based composite films using a simple chemical bath deposition method to form RC/CNT/FeS2 composite films. The RC/CNT composite film served as an ideal substrate for the homogeneous deposition of FeS2 microspheres due to its unique porous architecture, large specific surface area, and high conductivity. Polypyrrole (PPy), a conductive polymer, was coated on the RC/CNT/FeS2 composite to improve its conductivity and cycling stability. Due to the synergistic effect of FeS2 with high redox activity and PPy with high stability and conductivity, the RC/CNT/FeS2/PPy composite electrode exhibited excellent electrochemical performance. The RC/CNT/0.3FeS2/PPy-60 composite electrode tested with Na2SO4 aqueous electrolyte could achieve an excellent areal capacitance of 6543.8 mF cm-2 at a current density of 1 mA cm-2. The electrode retained 91.1% of its original capacitance after 10,000 charge/discharge cycles. Scanning electron microscopy (SEM) images showed that the ion transfer channels with a pore diameter of 5-30 μm were formed in the RC/CNT/0.3FeS2/PPy-60 film after a 10,000 cycle test. A symmetrical supercapacitor device composed of two identical pieces of RC/CNT/0.3FeS2/PPy-60 composite electrodes provided a high areal capacitance of 1280 mF cm-2, a maximum energy density of 329 μWh cm-2, a maximum power density of 24.9 mW cm-2, and 86.2% of capacitance retention after 10,000 cycles at 40 mA cm-2 when tested at a wide voltage window of 1.4 V. These results demonstrate the greatest potential of RC/CNT/FeS2/PPy composite electrodes for the fabrication of high-performance symmetric supercapacitors with high operating voltages.

SUBMITTER: Parayangattil Jyothibasu J 

PROVIDER: S-EPMC11191093 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

Iron Sulfide Microspheres Supported on Cellulose-Carbon Nanotube Conductive Flexible Film as an Electrode Material for Aqueous-Based Symmetric Supercapacitors with High Voltage.

Parayangattil Jyothibasu Jincy J   Tien You-Ching YC   Chen Zi-Ting ZT   Yang Hongta H   Chiang Tzu Hsuan TH   El-Mahdy Ahmed F M AFM   Lee Rong-Ho RH  

ACS omega 20240606 24


Nanostructured iron disulfide (FeS<sub>2</sub>) was uniformly deposited on regenerated cellulose (RC) and oxidized carbon nanotube (CNT)-based composite films using a simple chemical bath deposition method to form RC/CNT/FeS<sub>2</sub> composite films. The RC/CNT composite film served as an ideal substrate for the homogeneous deposition of FeS<sub>2</sub> microspheres due to its unique porous architecture, large specific surface area, and high conductivity. Polypyrrole (PPy), a conductive polym  ...[more]

Similar Datasets

| S-EPMC11314155 | biostudies-literature
| S-EPMC9784776 | biostudies-literature
| S-EPMC9048893 | biostudies-literature
| S-EPMC8980078 | biostudies-literature
| S-EPMC5998012 | biostudies-literature
| S-EPMC9089746 | biostudies-literature
| S-EPMC10609474 | biostudies-literature
| S-EPMC4931689 | biostudies-literature
| S-EPMC9418735 | biostudies-literature
| S-EPMC9926465 | biostudies-literature