Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework
The development of versatile supercapacitors is becoming a new trend to meet the needs of different application scenarios, including high/low temperature and flexible features and so on. In this paper, wide-temperature range and flexible supercapacitors are constructed using hierarchical porous N-do...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715622001989 |
| _version_ | 1811199033673252864 |
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| author | Yadi Zhang Lin Xie Shulong Li Zhongai Hu |
| author_facet | Yadi Zhang Lin Xie Shulong Li Zhongai Hu |
| author_sort | Yadi Zhang |
| collection | DOAJ |
| description | The development of versatile supercapacitors is becoming a new trend to meet the needs of different application scenarios, including high/low temperature and flexible features and so on. In this paper, wide-temperature range and flexible supercapacitors are constructed using hierarchical porous N-doped carbon framework (N-CF) and gel electrolyte, where N-CF is prepared via one-step pyrolysis of potassium citrate and anion exchange resin (AER) sol. Findings indicate that the porous structure and the specific surface area electrode materials play different roles in electrochemical performance of electrical double-layer capacitors (EDLCs). The coexistence of micropore and mesopore endows carbon materials with excellent performance including high specific capacitance (316 F g−1 at 1 A g−1) and rate capability (retention of 77 % from 1 to 100 A g−1). Moreover, pseudocapacitance coming from O-/N-containing function groups is estimated on the basis of cyclic voltammogram curves to explain the capacitance contribution. Additionally, polyvinyl alcohol (PVA)-based gel electrolyte is fabricated through low-temperature self-crosslinking by incorporating ethylene glycol/water (EG/H2O) binary solvent, which gives EDLCs a high energy density of 20.1 Wh kg−1 at power density of 0.45 kW kg−1 under 20 °C. Remarkably, the introduce of gel electrolyte can also make EDLCs low-temperature tolerant (a high energy density of 17.4 Wh kg−1 and excellent cycle stability under −20 °C), and wearable, which can meet the needs of different application scenes. |
| first_indexed | 2024-04-12T01:41:05Z |
| format | Article |
| id | doaj.art-c30ae6443db849c9bb97019949c45b34 |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-04-12T01:41:05Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-c30ae6443db849c9bb97019949c45b342022-12-22T03:53:12ZengElsevierResults in Chemistry2211-71562022-01-014100479Fabrication of multi-purposed supercapacitors based on N-doped porous carbon frameworkYadi Zhang0Lin Xie1Shulong Li2Zhongai Hu3Department of Polymer Materials, College of Petrochemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou 730060, China; Corresponding author at: Department of Polymer Materials, College of Petrochemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou, 730060, China.Department of Polymer Materials, College of Petrochemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou 730060, ChinaDepartment of Polymer Materials, College of Petrochemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou 730060, ChinaKey Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, ChinaThe development of versatile supercapacitors is becoming a new trend to meet the needs of different application scenarios, including high/low temperature and flexible features and so on. In this paper, wide-temperature range and flexible supercapacitors are constructed using hierarchical porous N-doped carbon framework (N-CF) and gel electrolyte, where N-CF is prepared via one-step pyrolysis of potassium citrate and anion exchange resin (AER) sol. Findings indicate that the porous structure and the specific surface area electrode materials play different roles in electrochemical performance of electrical double-layer capacitors (EDLCs). The coexistence of micropore and mesopore endows carbon materials with excellent performance including high specific capacitance (316 F g−1 at 1 A g−1) and rate capability (retention of 77 % from 1 to 100 A g−1). Moreover, pseudocapacitance coming from O-/N-containing function groups is estimated on the basis of cyclic voltammogram curves to explain the capacitance contribution. Additionally, polyvinyl alcohol (PVA)-based gel electrolyte is fabricated through low-temperature self-crosslinking by incorporating ethylene glycol/water (EG/H2O) binary solvent, which gives EDLCs a high energy density of 20.1 Wh kg−1 at power density of 0.45 kW kg−1 under 20 °C. Remarkably, the introduce of gel electrolyte can also make EDLCs low-temperature tolerant (a high energy density of 17.4 Wh kg−1 and excellent cycle stability under −20 °C), and wearable, which can meet the needs of different application scenes.http://www.sciencedirect.com/science/article/pii/S2211715622001989Self-activationN-doped porous carbon frameworkElectrical double-layer capacitors, Low-temperature performanceFlexible device |
| spellingShingle | Yadi Zhang Lin Xie Shulong Li Zhongai Hu Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework Results in Chemistry Self-activation N-doped porous carbon framework Electrical double-layer capacitors, Low-temperature performance Flexible device |
| title | Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework |
| title_full | Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework |
| title_fullStr | Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework |
| title_full_unstemmed | Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework |
| title_short | Fabrication of multi-purposed supercapacitors based on N-doped porous carbon framework |
| title_sort | fabrication of multi purposed supercapacitors based on n doped porous carbon framework |
| topic | Self-activation N-doped porous carbon framework Electrical double-layer capacitors, Low-temperature performance Flexible device |
| url | http://www.sciencedirect.com/science/article/pii/S2211715622001989 |
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