Organic salt-derived phosphorus-doped mesoporous carbon for high performance supercapacitors |
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| Affiliation: | 1. College of Materials Science and Engineering, Xi''an University of Science and Technology, Xi''an 710054, China;2. State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China;1. Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China;2. College of Chemistry and Chemical Engineering, Inner Mongolia Key Laboratory of Fine Organic Synthesis, Inner Mongolia University, Hohhot 010021, China;3. Centre for Molecular Systems and Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China;4. Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi''an 710072, China;1. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Chemistry, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, School of Science, Tianjin University, Tianjin 300354, China;4. Sino-Danish Center for Education and Research, Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China;1. Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China;2. School of Foreign Languages, Henan University, Kaifeng 475000, China;1. NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Hygiene Inspection & Quarantine Science, School of Public Health, Southern Medical University, Guangzhou 510515, China;2. Actmol AG, Hagentalerstrasse 49, Basel CH-4055, Switzerland;3. Research Center for Computer-Aided Drug Discovery, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;4. Beijing City Key Laboratory of Polymorphic Drugs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China;5. Department of Forensic Toxicological Analysis, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China;1. School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China;2. Jiangsu Xinhua Semiconductor Material Technology Co., Ltd., Xuzhou 221116, China |
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| Abstract: | Phosphorus-doped mesoporous carbons (PMCs) were prepared using a self-doping and self-templating approach via direct pyrolysis of sodium phytate (C6H17NaO24P6). The one-pot method allows simultaneous carbonization and P doping, eliminating the need for pre-synthesis or post-activation treatment. The C6H17NaO24P6 is the source of both carbon and phosphorus, and the nano-Na4P2O7 particles produced during pyrolysis act as hard templates for the honeycomb mesoporous structure with high specific surface area (884–827 m2/g), large mesopore volume ratio (67%–75%) and rich phosphorus content (0.53–2.34 at%). As electrodes of supercapacitors in 6 mol/L KOH, the PMCs showed outstanding performance with a high capacitance of 202 F/g and excellent rate performance of 148 F/g at 30 A/g. In addition, the PMCs-based symmetrical supercapacitors can operate in an expanded working voltage of 0–1.6 V in 3 mol/L H2SO4 aqueous electrolytes with high-density energy of 11.8 Wh/kg. |
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