High-performance nitrogen and sulfur co-doped nanotube-like carbon anodes for sodium ion hybrid capacitors |
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| Affiliation: | 1. Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, School of Physical Science & Technology, Lanzhou University, Lanzhou 730000, China;2. Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;1. School of Chemical Engineering and Light Industry, Guangdong University of Technology GDUT, 100 Waihuan Xi Road, Panyu District, Guangzhou, 510006, China;2. Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology GDUT, 100 Waihuan Xi Road, Panyu District, Guangzhou, 510006, China;3. Materials Science and Engineering, Physical Science and Engineering Division, King Abdullah University of Science and Technology KAUST, Thuwal, 23955-6900, Saudi Arabia;4. School of Chemistry and Chemical Engineering, South China University of Technology SCUT, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China;5. Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, 230601, China;6. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Chaoyang District, Changchun, 130012, China;1. College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China;2. Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan, 430074, China;1. Key Laboratory for Electronic Materials of the State Ethnic Affairs Commission of PRC, College of Electric Engineering, Northwest MinZu University, Lanzhou, Gansu 730030, PR China;2. Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;3. Institute of Nanomaterials Application Technology, Gansu Academy of Science, Lanzhou 730000, PR China;1. Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Key Laboratory of Biochemical Analysis, Shandong Province, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, PR China;2. College of Science and Technology, Agricultural University of Hebei, Cangzhou 061100, China |
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| Abstract: | Sodium ion hybrid capacitors are of great concern in large-scale and cost-effective electrical energy storage owing to their high energy and power densities, as well as natural abundance and wide distribution of sodium. However, it is difficult to find a well-pleasing anode material that matches the high-performance cathode materials to achieve good energy and power output for sodium ion hybrid capacitors. In this paper, nitrogen and sulfur co-doped nanotube-like carbon prepared by a simple carbonization process of high sulfur-loaded polyaniline nanotubes is introduced as the anode. The assembled sodium ion half cell based on the optimal nanotube-like carbon delivers a high reversible capacity of ∼304.8 mAh/g at 0.2 A/g and an excellent rate performance of ∼124.8 mAh/g at 10 A/g in a voltage window of 0.01–2.5 V (versus sodium/sodium ion). For the hybrid capacitors assembled using the optimal nanotube-like carbon as the anode and high-capacity activated carbon as the cathode, high energy densities of ∼100.2 Wh/kg at 250 W/kg and ∼50.69 Wh/kg at 12,500 W/kg are achieved. |
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| Keywords: | Sodium ion hybrid capacitors Anode Nanotube-like carbon Polyaniline nanotubes Electrical energy storage |
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