Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors
Needle-like CoO nanowires have been successfully synthesized by a facile hydrothermal process on an electrospun carbon nanofibers substrate. The as-prepared sample mesoporous CoO nanowires aligned vertically on the surface of carbon nanofibers and cross-linked with each other, producing loosely poro...
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MDPI AG
2024-11-01
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| author | Xiang Zhang |
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| description | Needle-like CoO nanowires have been successfully synthesized by a facile hydrothermal process on an electrospun carbon nanofibers substrate. The as-prepared sample mesoporous CoO nanowires aligned vertically on the surface of carbon nanofibers and cross-linked with each other, producing loosely porous nanostructures. These hybrid composite electrodes exhibit a high specific capacitance of 1068.3 F g<sup>−1</sup> at a scan rate of 5 mV s<sup>−1</sup> and a good rate capability of 613.7 F g<sup>−1</sup> at a scan rate of 60 mV s<sup>−1</sup> in a three-electrode cell. The CoO NWs@CNF//CNT@CNF asymmetric device exhibits remarkable cycling stability and delivers a capacitance of 79.3 F/g with a capacitance retention of 92.1 % after 10,000 cycles. The asymmetric device delivers a high energy density of 37 Wh kg<sup>−1</sup> with a power density of 0.8 kW kg<sup>−1</sup> and a high power density of 16 kW kg<sup>−1</sup> with an energy density of 23 Wh kg<sup>−1</sup>. This study demonstrated a promising strategy to enhance the electrochemical performance of flexible supercapacitors. |
| format | Article |
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| institution | DOAJ |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj-art-7de4672c8bb247319a8fb3a5fc9ece892025-08-20T02:49:49ZengMDPI AGNanomaterials2079-49912024-11-011421177010.3390/nano14211770Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible SupercapacitorsXiang Zhang0Department of Energy and Power Engineering, North University of China, Taiyuan 038507, ChinaNeedle-like CoO nanowires have been successfully synthesized by a facile hydrothermal process on an electrospun carbon nanofibers substrate. The as-prepared sample mesoporous CoO nanowires aligned vertically on the surface of carbon nanofibers and cross-linked with each other, producing loosely porous nanostructures. These hybrid composite electrodes exhibit a high specific capacitance of 1068.3 F g<sup>−1</sup> at a scan rate of 5 mV s<sup>−1</sup> and a good rate capability of 613.7 F g<sup>−1</sup> at a scan rate of 60 mV s<sup>−1</sup> in a three-electrode cell. The CoO NWs@CNF//CNT@CNF asymmetric device exhibits remarkable cycling stability and delivers a capacitance of 79.3 F/g with a capacitance retention of 92.1 % after 10,000 cycles. The asymmetric device delivers a high energy density of 37 Wh kg<sup>−1</sup> with a power density of 0.8 kW kg<sup>−1</sup> and a high power density of 16 kW kg<sup>−1</sup> with an energy density of 23 Wh kg<sup>−1</sup>. This study demonstrated a promising strategy to enhance the electrochemical performance of flexible supercapacitors.https://www.mdpi.com/2079-4991/14/21/1770flexible supercapacitorscarbon nanofibersneedle-like CoO |
| spellingShingle | Xiang Zhang Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors Nanomaterials flexible supercapacitors carbon nanofibers needle-like CoO |
| title | Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors |
| title_full | Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors |
| title_fullStr | Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors |
| title_full_unstemmed | Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors |
| title_short | Synthesis of Needle-like CoO Nanowires Decorated with Electrospun Carbon Nanofibers for High-Performance Flexible Supercapacitors |
| title_sort | synthesis of needle like coo nanowires decorated with electrospun carbon nanofibers for high performance flexible supercapacitors |
| topic | flexible supercapacitors carbon nanofibers needle-like CoO |
| url | https://www.mdpi.com/2079-4991/14/21/1770 |
| work_keys_str_mv | AT xiangzhang synthesisofneedlelikecoonanowiresdecoratedwithelectrospuncarbonnanofibersforhighperformanceflexiblesupercapacitors |