Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors
Cobalt oxide (CoO<sub>x</sub>) nanowires have been broadly explored as advanced pseudocapacitive materials owing to their impressive theoretical gravimetric capacity. However, the traditional method of compositing with conductive nanoparticles to improve their poor conductivity will unpr...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/4/749 |
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| author | Haomin Ji Yifei Ma Zhuo Cai Micun Yun Jiemin Han Zhaomin Tong Mei Wang Jonghwan Suhr Liantuan Xiao Suotang Jia Xuyuan Chen |
| author_facet | Haomin Ji Yifei Ma Zhuo Cai Micun Yun Jiemin Han Zhaomin Tong Mei Wang Jonghwan Suhr Liantuan Xiao Suotang Jia Xuyuan Chen |
| author_sort | Haomin Ji |
| collection | DOAJ |
| description | Cobalt oxide (CoO<sub>x</sub>) nanowires have been broadly explored as advanced pseudocapacitive materials owing to their impressive theoretical gravimetric capacity. However, the traditional method of compositing with conductive nanoparticles to improve their poor conductivity will unpredictably lead to a decrease in actual capacity. The amelioration of the aspect ratio of the CoO<sub>x</sub> nanowires may affect the pathway of electron conduction and ion diffusion, thereby improving the electrochemical performances. Here, CoO<sub>x</sub> nanowires with various aspect ratios were synthesized by controlling hydrothermal temperature, and the CoO<sub>x</sub> electrodes achieve a high gravimetric specific capacity (1424.8 C g<sup>−1</sup>) and rate performance (38% retention at 100 A g<sup>−1</sup> compared to 1 A g<sup>−1</sup>). Hybrid supercapacitors (HSCs) based on activated carbon anode reach an exceptional specific energy of 61.8 Wh kg<sup>−1</sup> and excellent cyclic performance (92.72% retention, 5000 cycles at 5 A g<sup>−1</sup>). The CoO<sub>x</sub> nanowires exhibit great promise as a favorable cathode material in the field of high-performance supercapacitors (SCs). |
| first_indexed | 2024-03-11T08:19:47Z |
| format | Article |
| id | doaj.art-4edd6bfe1a4c41e892fc5dc966f36d40 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T08:19:47Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4edd6bfe1a4c41e892fc5dc966f36d402023-11-16T22:28:22ZengMDPI AGNanomaterials2079-49912023-02-0113474910.3390/nano13040749Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid SupercapacitorsHaomin Ji0Yifei Ma1Zhuo Cai2Micun Yun3Jiemin Han4Zhaomin Tong5Mei Wang6Jonghwan Suhr7Liantuan Xiao8Suotang Jia9Xuyuan Chen10State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaDepartment of Polymer Science and Engineering, School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, ChinaCobalt oxide (CoO<sub>x</sub>) nanowires have been broadly explored as advanced pseudocapacitive materials owing to their impressive theoretical gravimetric capacity. However, the traditional method of compositing with conductive nanoparticles to improve their poor conductivity will unpredictably lead to a decrease in actual capacity. The amelioration of the aspect ratio of the CoO<sub>x</sub> nanowires may affect the pathway of electron conduction and ion diffusion, thereby improving the electrochemical performances. Here, CoO<sub>x</sub> nanowires with various aspect ratios were synthesized by controlling hydrothermal temperature, and the CoO<sub>x</sub> electrodes achieve a high gravimetric specific capacity (1424.8 C g<sup>−1</sup>) and rate performance (38% retention at 100 A g<sup>−1</sup> compared to 1 A g<sup>−1</sup>). Hybrid supercapacitors (HSCs) based on activated carbon anode reach an exceptional specific energy of 61.8 Wh kg<sup>−1</sup> and excellent cyclic performance (92.72% retention, 5000 cycles at 5 A g<sup>−1</sup>). The CoO<sub>x</sub> nanowires exhibit great promise as a favorable cathode material in the field of high-performance supercapacitors (SCs).https://www.mdpi.com/2079-4991/13/4/749CoO<sub>x</sub> nanowiresaspect ratioscapacityhybrid supercapacitors |
| spellingShingle | Haomin Ji Yifei Ma Zhuo Cai Micun Yun Jiemin Han Zhaomin Tong Mei Wang Jonghwan Suhr Liantuan Xiao Suotang Jia Xuyuan Chen Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors Nanomaterials CoO<sub>x</sub> nanowires aspect ratios capacity hybrid supercapacitors |
| title | Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors |
| title_full | Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors |
| title_fullStr | Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors |
| title_full_unstemmed | Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors |
| title_short | Mesoporous Cobalt Oxide (CoO<sub>x</sub>) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors |
| title_sort | mesoporous cobalt oxide coo sub x sub nanowires with different aspect ratios for high performance hybrid supercapacitors |
| topic | CoO<sub>x</sub> nanowires aspect ratios capacity hybrid supercapacitors |
| url | https://www.mdpi.com/2079-4991/13/4/749 |
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