Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance
A coal-based porous carbon was prepared through a single activation process. Jincheng smokeless coal was taken as the research object and ferrate (K2FeO4) as the activator. Meanwhile, potassium-based substances were served as pore-forming agents and iron-based substances contributed to the catalyzin...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2025-08-01
|
| Series: | Kuangchan zonghe liyong |
| Subjects: | |
| Online Access: | http://www.kczhly.com/en/article/doi/10.12476/kczhly.202403210109 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849224558415970304 |
|---|---|
| author | Haoran ZHANG Suling YAO Xianshu DONG Yuanpeng FU Yuping FAN |
| author_facet | Haoran ZHANG Suling YAO Xianshu DONG Yuanpeng FU Yuping FAN |
| author_sort | Haoran ZHANG |
| collection | DOAJ |
| description | A coal-based porous carbon was prepared through a single activation process. Jincheng smokeless coal was taken as the research object and ferrate (K2FeO4) as the activator. Meanwhile, potassium-based substances were served as pore-forming agents and iron-based substances contributed to the catalyzing graphitization. The optimal activation temperature and activator dosage were investigated, and the physicochemical structure of representative samples was analyzed using techniques including Scanning Electron Microscopy(SEM), nitrogen adsorption testing, Raman spectroscopy and X-ray diffraction(XRD). The electrochemical energy storage characteristics were evaluated. On this basis, the effect of N and P element doping on the structure and electrochemical performance of the porous carbon was investigated. The results indicate that, the pore structure of the porous carbon evolves from ultra-micropores to micropores and hierarchical pores, while the carbon microcrystals transition from amorphous to graphitic structures during the one-step chemical activation process with K2FeO4. Specifically, with a coal-to-K2FeO4 mass ratio of 1:1 and an activation temperature of 900 ℃, the porous carbon attains a specific surface area of 1 220.82 m2/g. At a current density of 0.5 A/g, its capacitance reaches 149.47 F/g, and even at a high current density of 10 A/g, a capacitance retention rate of 77.39% is maintained. The electrochemical performance of the porous carbon is also enhanced to a certain extent after N and P element doping, with a specific capacitance reaching 167.45 F/g, and the capacitance retention rate increased to 87.98%. This porous carbon material, which is characterized by its cost-effectiveness, accessibility, and environmental friendliness, has great potential for industrial applications. |
| format | Article |
| id | doaj-art-fa15d39ffcc5456e911c33ffd766efac |
| institution | Kabale University |
| issn | 1000-6532 |
| language | zho |
| publishDate | 2025-08-01 |
| publisher | Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Kuangchan zonghe liyong |
| spelling | doaj-art-fa15d39ffcc5456e911c33ffd766efac2025-08-25T08:13:18ZzhoInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological SciencesKuangchan zonghe liyong1000-65322025-08-0146416517410.12476/kczhly.2024032101092025-04zhanghaoranPreparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical PerformanceHaoran ZHANG0Suling YAO1Xianshu DONG2Yuanpeng FU3Yuping FAN4School of Mining Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, ChinaSchool of Mining Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, ChinaSchool of Mining Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, ChinaSchool of Mining Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, ChinaSchool of Mining Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, ChinaA coal-based porous carbon was prepared through a single activation process. Jincheng smokeless coal was taken as the research object and ferrate (K2FeO4) as the activator. Meanwhile, potassium-based substances were served as pore-forming agents and iron-based substances contributed to the catalyzing graphitization. The optimal activation temperature and activator dosage were investigated, and the physicochemical structure of representative samples was analyzed using techniques including Scanning Electron Microscopy(SEM), nitrogen adsorption testing, Raman spectroscopy and X-ray diffraction(XRD). The electrochemical energy storage characteristics were evaluated. On this basis, the effect of N and P element doping on the structure and electrochemical performance of the porous carbon was investigated. The results indicate that, the pore structure of the porous carbon evolves from ultra-micropores to micropores and hierarchical pores, while the carbon microcrystals transition from amorphous to graphitic structures during the one-step chemical activation process with K2FeO4. Specifically, with a coal-to-K2FeO4 mass ratio of 1:1 and an activation temperature of 900 ℃, the porous carbon attains a specific surface area of 1 220.82 m2/g. At a current density of 0.5 A/g, its capacitance reaches 149.47 F/g, and even at a high current density of 10 A/g, a capacitance retention rate of 77.39% is maintained. The electrochemical performance of the porous carbon is also enhanced to a certain extent after N and P element doping, with a specific capacitance reaching 167.45 F/g, and the capacitance retention rate increased to 87.98%. This porous carbon material, which is characterized by its cost-effectiveness, accessibility, and environmental friendliness, has great potential for industrial applications.http://www.kczhly.com/en/article/doi/10.12476/kczhly.202403210109smokeless coalcoal-based porous carbonco-activation of potassium and ironnitrogen and phosphorus dopingelectrode materialsupercapacitor |
| spellingShingle | Haoran ZHANG Suling YAO Xianshu DONG Yuanpeng FU Yuping FAN Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance Kuangchan zonghe liyong smokeless coal coal-based porous carbon co-activation of potassium and iron nitrogen and phosphorus doping electrode material supercapacitor |
| title | Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance |
| title_full | Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance |
| title_fullStr | Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance |
| title_full_unstemmed | Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance |
| title_short | Preparation of Potassium-iron Co-activated Coal-based Porous Carbon and its Electrochemical Performance |
| title_sort | preparation of potassium iron co activated coal based porous carbon and its electrochemical performance |
| topic | smokeless coal coal-based porous carbon co-activation of potassium and iron nitrogen and phosphorus doping electrode material supercapacitor |
| url | http://www.kczhly.com/en/article/doi/10.12476/kczhly.202403210109 |
| work_keys_str_mv | AT haoranzhang preparationofpotassiumironcoactivatedcoalbasedporouscarbonanditselectrochemicalperformance AT sulingyao preparationofpotassiumironcoactivatedcoalbasedporouscarbonanditselectrochemicalperformance AT xianshudong preparationofpotassiumironcoactivatedcoalbasedporouscarbonanditselectrochemicalperformance AT yuanpengfu preparationofpotassiumironcoactivatedcoalbasedporouscarbonanditselectrochemicalperformance AT yupingfan preparationofpotassiumironcoactivatedcoalbasedporouscarbonanditselectrochemicalperformance |