Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors
The engineering of pore structures has great significance in the development of high-performance carbon-based supercapacitor electrode materials. Herein, we have successfully transformed jujube pits into hierarchical porous carbon (HJPC-4) with excellent capacitive properties via a unique hydrotherm...
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2024-12-01
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| author | Cuihua Kang Mingyuan Zuo Chang Qiu Fanda Zeng Yuehui Wang Zhuo Chen Tingting Liang Daping Qiu |
| author_facet | Cuihua Kang Mingyuan Zuo Chang Qiu Fanda Zeng Yuehui Wang Zhuo Chen Tingting Liang Daping Qiu |
| author_sort | Cuihua Kang |
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| description | The engineering of pore structures has great significance in the development of high-performance carbon-based supercapacitor electrode materials. Herein, we have successfully transformed jujube pits into hierarchical porous carbon (HJPC-4) with excellent capacitive properties via a unique hydrothermal–carbonization–activation strategy. Hydrothermal pretreatment is essential to regulate the supermesoporous and macroporous structure of samples and their superior electrochemical performances. Owing to the large ion-accessible, remarkable supermesoporous and macroporous pore volume, HJPC-4 exhibited ultra-high specific capacitance (6 M KOH: 316 F g<sup>−1</sup> at 1 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: 204 F g<sup>−1</sup> at 1 A g<sup>−1</sup>), excellent rate performance (6 M KOH: 231 F g<sup>−1</sup> at 100 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: 154 F g<sup>−1</sup> at 30 A g<sup>−1</sup>), outstanding cycling stability (6 M KOH: the retention rate is 92.11% after 60,000 cycles at 10 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: the retention rate is 80% after 10,000 cycles at 5 A g<sup>−1</sup>), and ultimate energy/power density up to 91.09 Wh kg<sup>−1</sup>/24.25 kW kg<sup>−1</sup> in EMIMBF<sub>4</sub> two-electrode systems. This work presents unique insights into the effect of the pore structure of carbon-based materials on their capacitive energy storage. |
| format | Article |
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| institution | Kabale University |
| issn | 2313-0105 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Batteries |
| spelling | doaj-art-637c64720d864a87bda23729faa2ea122025-01-24T13:22:23ZengMDPI AGBatteries2313-01052024-12-01111710.3390/batteries11010007Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance SupercapacitorsCuihua Kang0Mingyuan Zuo1Chang Qiu2Fanda Zeng3Yuehui Wang4Zhuo Chen5Tingting Liang6Daping Qiu7Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, ChinaChina Construction Third Engineering Bureau Group Co., Ltd., Wuhan 430064, ChinaHubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaHubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaHubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaHubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaHubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaThe engineering of pore structures has great significance in the development of high-performance carbon-based supercapacitor electrode materials. Herein, we have successfully transformed jujube pits into hierarchical porous carbon (HJPC-4) with excellent capacitive properties via a unique hydrothermal–carbonization–activation strategy. Hydrothermal pretreatment is essential to regulate the supermesoporous and macroporous structure of samples and their superior electrochemical performances. Owing to the large ion-accessible, remarkable supermesoporous and macroporous pore volume, HJPC-4 exhibited ultra-high specific capacitance (6 M KOH: 316 F g<sup>−1</sup> at 1 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: 204 F g<sup>−1</sup> at 1 A g<sup>−1</sup>), excellent rate performance (6 M KOH: 231 F g<sup>−1</sup> at 100 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: 154 F g<sup>−1</sup> at 30 A g<sup>−1</sup>), outstanding cycling stability (6 M KOH: the retention rate is 92.11% after 60,000 cycles at 10 A g<sup>−1</sup>; EMIMBF<sub>4</sub>: the retention rate is 80% after 10,000 cycles at 5 A g<sup>−1</sup>), and ultimate energy/power density up to 91.09 Wh kg<sup>−1</sup>/24.25 kW kg<sup>−1</sup> in EMIMBF<sub>4</sub> two-electrode systems. This work presents unique insights into the effect of the pore structure of carbon-based materials on their capacitive energy storage.https://www.mdpi.com/2313-0105/11/1/7hierarchical porous carbonjujube pithydrothermal pretreatmentKOH activationsupercapacitor |
| spellingShingle | Cuihua Kang Mingyuan Zuo Chang Qiu Fanda Zeng Yuehui Wang Zhuo Chen Tingting Liang Daping Qiu Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors Batteries hierarchical porous carbon jujube pit hydrothermal pretreatment KOH activation supercapacitor |
| title | Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors |
| title_full | Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors |
| title_fullStr | Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors |
| title_full_unstemmed | Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors |
| title_short | Hydrothermal Pre-Carbonization Triggers Structural Reforming Enabling Pore-Tunable Hierarchical Porous Carbon for High-Performance Supercapacitors |
| title_sort | hydrothermal pre carbonization triggers structural reforming enabling pore tunable hierarchical porous carbon for high performance supercapacitors |
| topic | hierarchical porous carbon jujube pit hydrothermal pretreatment KOH activation supercapacitor |
| url | https://www.mdpi.com/2313-0105/11/1/7 |
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