Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization
Bio-tar, a promising renewable carbon precursor, has garnered significant attention for its potential in supercapacitor electrode applications. However, the polymerization of bio-tar into carbon presents challenges, particularly in achieving a dense, interconnected pore structure essential for optim...
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Elsevier
2025-05-01
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| Series: | Fuel Processing Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378382025000025 |
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| author | Jixiu Jia Yuxuan Sun Lili Huo Lixin Zhao Ziyun Liu Zhidan Liu Kang Kang Shuaishuai Zhang Teng Xie Yanan Zhao Zonglu Yao |
| author_facet | Jixiu Jia Yuxuan Sun Lili Huo Lixin Zhao Ziyun Liu Zhidan Liu Kang Kang Shuaishuai Zhang Teng Xie Yanan Zhao Zonglu Yao |
| author_sort | Jixiu Jia |
| collection | DOAJ |
| description | Bio-tar, a promising renewable carbon precursor, has garnered significant attention for its potential in supercapacitor electrode applications. However, the polymerization of bio-tar into carbon presents challenges, particularly in achieving a dense, interconnected pore structure essential for optimal electrochemical performance. This study introduced an innovative approach using hydrochar as a framework combined with bio-tar as the carbon source to synthesize bio-carbon composite. The results showed that the prepared bio-carbon exhibited a stable morphological structure in which the hydrochar skeleton supported the wrapping of bio-tar originated carbon, specifically at a hydrochar to bio-tar ratio of 1:6. And it also showed a maximum specific surface area of 2714.27 m2/g, with a mesopore ratio of 68.79 % at an activation temperature of 800 °C. The optimal electrochemical properties were observed at the highest specific capacitance of 340.4 F/g in a three-electrode system under a current density of 0.5 A/g. When assembled into a supercapacitor, the single-pole specific capacitance reached 213.3 F/g at 0.5 A/g. The structure-property relationship suggested that the water contact angle is a key factor influencing the specific capacitance, particularly at high specific surface areas. This study demonstrated an innovative way to prepare sustainable composite bio-carbon material with excellent electrochemical performance. |
| format | Article |
| id | doaj-art-2593451811bf4c4a981f90addb1b5a6e |
| institution | Kabale University |
| issn | 0378-3820 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Processing Technology |
| spelling | doaj-art-2593451811bf4c4a981f90addb1b5a6e2025-02-06T05:11:03ZengElsevierFuel Processing Technology0378-38202025-05-01269108178Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerizationJixiu Jia0Yuxuan Sun1Lili Huo2Lixin Zhao3Ziyun Liu4Zhidan Liu5Kang Kang6Shuaishuai Zhang7Teng Xie8Yanan Zhao9Zonglu Yao10Key Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaLaboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, ChinaBiorefining Research Institute (BRI) and Department of Chemical Engineering, Lakehead University, Thunder Bay, ON P7B 5E1, CanadaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, ChinaKey Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China; Corresponding author.Bio-tar, a promising renewable carbon precursor, has garnered significant attention for its potential in supercapacitor electrode applications. However, the polymerization of bio-tar into carbon presents challenges, particularly in achieving a dense, interconnected pore structure essential for optimal electrochemical performance. This study introduced an innovative approach using hydrochar as a framework combined with bio-tar as the carbon source to synthesize bio-carbon composite. The results showed that the prepared bio-carbon exhibited a stable morphological structure in which the hydrochar skeleton supported the wrapping of bio-tar originated carbon, specifically at a hydrochar to bio-tar ratio of 1:6. And it also showed a maximum specific surface area of 2714.27 m2/g, with a mesopore ratio of 68.79 % at an activation temperature of 800 °C. The optimal electrochemical properties were observed at the highest specific capacitance of 340.4 F/g in a three-electrode system under a current density of 0.5 A/g. When assembled into a supercapacitor, the single-pole specific capacitance reached 213.3 F/g at 0.5 A/g. The structure-property relationship suggested that the water contact angle is a key factor influencing the specific capacitance, particularly at high specific surface areas. This study demonstrated an innovative way to prepare sustainable composite bio-carbon material with excellent electrochemical performance.http://www.sciencedirect.com/science/article/pii/S0378382025000025HydrocharBio-tarBio-carbon compositePorous bio-carbonSupercapacitor electrode |
| spellingShingle | Jixiu Jia Yuxuan Sun Lili Huo Lixin Zhao Ziyun Liu Zhidan Liu Kang Kang Shuaishuai Zhang Teng Xie Yanan Zhao Zonglu Yao Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization Fuel Processing Technology Hydrochar Bio-tar Bio-carbon composite Porous bio-carbon Supercapacitor electrode |
| title | Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization |
| title_full | Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization |
| title_fullStr | Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization |
| title_full_unstemmed | Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization |
| title_short | Bio-carbon composite for supercapacitor electrodes: Harnessing hydrochar frameworks and bio-tar polymerization |
| title_sort | bio carbon composite for supercapacitor electrodes harnessing hydrochar frameworks and bio tar polymerization |
| topic | Hydrochar Bio-tar Bio-carbon composite Porous bio-carbon Supercapacitor electrode |
| url | http://www.sciencedirect.com/science/article/pii/S0378382025000025 |
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