In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor
The Co<sub>3</sub>O<sub>4</sub> electrode is a very promising material owing to its ultrahigh capacitance. Nevertheless, the electrochemical performance of Co<sub>3</sub>O<sub>4</sub>-based supercapacitors is practically confined by the limited active...
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MDPI AG
2022-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/9/1571 |
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| author | Hao Gong Shiguang Bie Jian Zhang Xianbin Ke Xiaoxing Wang Jianquan Liang Nian Wu Qichang Zhang Chuanxian Luo Yanmin Jia |
| author_facet | Hao Gong Shiguang Bie Jian Zhang Xianbin Ke Xiaoxing Wang Jianquan Liang Nian Wu Qichang Zhang Chuanxian Luo Yanmin Jia |
| author_sort | Hao Gong |
| collection | DOAJ |
| description | The Co<sub>3</sub>O<sub>4</sub> electrode is a very promising material owing to its ultrahigh capacitance. Nevertheless, the electrochemical performance of Co<sub>3</sub>O<sub>4</sub>-based supercapacitors is practically confined by the limited active sites and poor conductivity of Co<sub>3</sub>O<sub>4</sub>. Herein, we provide a facile synthetic strategy of tightly anchoring Co<sub>3</sub>O<sub>4</sub> nanosheets to a carbon fiber conductive cloth (Co<sub>3</sub>O<sub>4</sub>@C) using the zeolitic imidazolate framework-67 (ZIF-67) sacrificial template via in situ impregnation and the pyrolysis method. Benefiting from the enhancement of conductivity and the increase in active sites, the binder-free porous Co<sub>3</sub>O<sub>4</sub>@C supercapacitor electrodes possess typical pseudocapacitance characteristics, with an acceptable specific capacitance of ~251 F/g at 1 A/g and long-term cycling stability (90% after cycling 5000 times at 3 A/g). Moreover, the asymmetric and flexible supercapacitor composed of Co<sub>3</sub>O<sub>4</sub>@C and activated carbon is further assembled, and it can drive the red LED for 6 min. |
| first_indexed | 2024-03-10T03:52:17Z |
| format | Article |
| id | doaj.art-ff6576d3932e47758fbbf3e153402eea |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:52:17Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ff6576d3932e47758fbbf3e153402eea2023-11-23T08:56:16ZengMDPI AGNanomaterials2079-49912022-05-01129157110.3390/nano12091571In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for SupercapacitorHao Gong0Shiguang Bie1Jian Zhang2Xianbin Ke3Xiaoxing Wang4Jianquan Liang5Nian Wu6Qichang Zhang7Chuanxian Luo8Yanmin Jia9NARI Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaNARI Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaState Grid Heilongjiang Electric Power Corporation, Academy of Science, Harbin 150030, ChinaNARI Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaSchool of Science, College of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, ChinaState Grid Heilongjiang Electric Power Corporation, Academy of Science, Harbin 150030, ChinaNARI Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaSchool of Science, College of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, ChinaNARI Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaSchool of Science, College of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, ChinaThe Co<sub>3</sub>O<sub>4</sub> electrode is a very promising material owing to its ultrahigh capacitance. Nevertheless, the electrochemical performance of Co<sub>3</sub>O<sub>4</sub>-based supercapacitors is practically confined by the limited active sites and poor conductivity of Co<sub>3</sub>O<sub>4</sub>. Herein, we provide a facile synthetic strategy of tightly anchoring Co<sub>3</sub>O<sub>4</sub> nanosheets to a carbon fiber conductive cloth (Co<sub>3</sub>O<sub>4</sub>@C) using the zeolitic imidazolate framework-67 (ZIF-67) sacrificial template via in situ impregnation and the pyrolysis method. Benefiting from the enhancement of conductivity and the increase in active sites, the binder-free porous Co<sub>3</sub>O<sub>4</sub>@C supercapacitor electrodes possess typical pseudocapacitance characteristics, with an acceptable specific capacitance of ~251 F/g at 1 A/g and long-term cycling stability (90% after cycling 5000 times at 3 A/g). Moreover, the asymmetric and flexible supercapacitor composed of Co<sub>3</sub>O<sub>4</sub>@C and activated carbon is further assembled, and it can drive the red LED for 6 min.https://www.mdpi.com/2079-4991/12/9/1571ZIF-67Co<sub>3</sub>O<sub>4</sub> nanosheetin situ growthCo<sub>3</sub>O<sub>4</sub>@Csupercapacitor |
| spellingShingle | Hao Gong Shiguang Bie Jian Zhang Xianbin Ke Xiaoxing Wang Jianquan Liang Nian Wu Qichang Zhang Chuanxian Luo Yanmin Jia In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor Nanomaterials ZIF-67 Co<sub>3</sub>O<sub>4</sub> nanosheet in situ growth Co<sub>3</sub>O<sub>4</sub>@C supercapacitor |
| title | In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor |
| title_full | In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor |
| title_fullStr | In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor |
| title_full_unstemmed | In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor |
| title_short | In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor |
| title_sort | in situ construction of zif 67 derived hybrid tricobalt tetraoxide carbon for supercapacitor |
| topic | ZIF-67 Co<sub>3</sub>O<sub>4</sub> nanosheet in situ growth Co<sub>3</sub>O<sub>4</sub>@C supercapacitor |
| url | https://www.mdpi.com/2079-4991/12/9/1571 |
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