التفاصيل البيبلوغرافية
| العنوان: |
Carbon Nanofibers-Assembled Tungsten Oxide as Unique Hybrid Electrode Materials for High-Performance Symmetric Supercapacitors |
| المؤلفون: |
Weiyan Sun (5903729), Chunping Li (338066), Jie Bai (28269), Lei Xing (129950) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Medicine, Biotechnology, Computational Biology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, High-Performance Symmetric Supercap., SFS, AMT, n-type semiconductor property, 20 mL water, RCNF, superior-performance energy storage., capacitance, carbon Nanofibers-Assembled Tungste., electrode materials, WO 3, energy storage material, Unique Hybrid Electrode Materials, charge transfer ability, CNF |
| الوصف: |
It is crucial to balance the energy supply and demand of wearable and mobile electrical devices for their widespread applications. Supercapacitors have attracted increasing attentions in this field due to their unique advantages. This work studied the preparation of highly graphitized WO 3 –CNFs as promising flexible electrode materials for fiber-shaped supercapacitors. Tungsten oxide, a prospective energy storage material owing to its n-type semiconductor property, was integrated with carbon nanofibers (CNFs) to synthesize nanostructured WO 3 –CNFs through a combined electrospinning and hydrothermal method. A variety of amounts of ammonium metatungst (AMT) were screened and WO 3 -RCNFs8 (8 mg AMT in 20 mL water) was proven to deliver the maximum specific capacitance (381.40 F g –1 at 0.5 A g –1 ), capacitance retention (up to 111.87% after 5000 cycles), and high-rate capability (58.68% retention in specific capacitance at 20 versus 0.3 A g –1 ). A symmetric flexible solid-state supercapacitor (SFS) device was assembled using the as-prepared WO 3 –CNFs8 as electrode materials. The maximum energy density of 4.28 Wh kg –1 with a power density of 3356.90 W kg –1 was achieved. The superior electrochemical performances can be explained by the synergistic effect of the n-type semiconductor property of WO 3 and the excellent charge transfer ability of CNFs, which could attract more charges into the electrode throughout charging state and release them rapidly during the discharging state. The n-type semiconductor enhanced the electrochemical behavior of CNFs and played a vital role in achieving high specific capacitance. The new procedure of preparing flexible electrode materials with enhanced charge storage/release capacity was investigated, which is chiefly essential for superior-performance energy storage devices. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Carbon_Nanofibers-Assembled_Tungsten_Oxide_as_Unique_Hybrid_Electrode_Materials_for_High-Performance_Symmetric_Supercapacitors/14899914Test |
| DOI: |
10.1021/acs.energyfuels.1c01428.s001 |
| الإتاحة: |
https://doi.org/10.1021/acs.energyfuels.1c01428.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.D5B3C714 |
| قاعدة البيانات: |
BASE |
