Fabrication of porous carbon monoliths with a graphitic framework |
| |
| Affiliation: | 1. CSIR-Central Electrochemical Research Institute, Karaikudi 630 006, Tamilnadu, India;2. AcSIR – Academy of Scientific & Innovative Research, India;1. School of Engineering and Technology, Walailak University, Nakhon Si Thammarat, 80160, Thailand;2. Center of Excellence on Wood and Biomaterials, Walailak University, Nakhon Si Thammarat, 80160, Thailand;3. The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand;4. Center of Excellence on Petrochemical and Materials Technology, Bangkok, 10330, Thailand;5. Mae Fah Luang University, Chiang Rai, 57100, Thailand;6. Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA;1. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China;2. Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, China;1. Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2V4;2. National Institute for Nanotechnology (NINT), National Research Council of Canada, Edmonton, Alberta, Canada T6G 2M9;3. Department of Chemistry, Binghamton University-State University of New York, Binghamton, NY 13902, USA;4. Alberta Center for Surface Engineering and Science (ACSES), University of Alberta, Edmonton, Alberta, Canada T6G 2G6;5. Chemical & Biomolecular Engineering and Mechanical Engineering, Clarkson University, Potsdam, NY 13699, USA;1. Singapore Institute of Manufacturing Technology, A1STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis 138634, Singapore;2. Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore;3. School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China;4. Department of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin Hong Kong;5. National University of Singapore (Chongqing) Research Institute, Chongqing, 401123, PR China |
| |
| Abstract: | Macro/mesoporous carbon monoliths with a graphitic framework were synthesized by carbonizing polymeric monoliths of poly(benzoxazine-co-resol). The overall synthesis process consists of the following steps: (a) the preparation of polymeric monoliths by co-polymerization of resorcinol and formaldehyde with a polyamine (tetraethylenepentamine), (b) doping the polymer with a metallic salt of Fe, Ni or Co, (c) carbonization and (d) the removal of inorganic nanoparticles. The metal nanoparticles (Fe, Ni or Co) formed during the carbonization step catalyse the conversion of a fraction of amorphous carbon into graphitic domains. The resulting carbon monoliths contain >50 wt.% of graphitic carbon, which considerably improves their electrical conductivity. The use of tetraethylenepentamine in the synthesis results in a nitrogen-containing framework. Textural characterization of these materials shows that they have a dual porosity made up of macropores and mesopores (～2–10 nm), with a BET surface area in the 280–400 m2 g?1 range. We tested these materials as electrodes in organic electrolyte supercapacitors and found that no conductive additive is needed due to their high electrical conductivity. In addition, they show a specific capacitance of up to 35 F g?1, excellent rate and cycling performance, delivering up to 10 kW kg?1 at high current densities. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
