Preparation and electrochemical investigation of the cobalt hydroxide carbonate/activated carbon nanocomposite for supercapacitor applications |
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| Institution: | 1. Department of Chemistry, Bonab Branch, Islamic Azad University, Bonab, Iran;2. Nuclear Science and Technology Research Institute (NSTRI), P.O. Box 14395-834, Tehran, Iran;3. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran;1. Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China;2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;1. Centre for Nanomaterials & Energy Devices, School of Physical Sciences, SRTM University, Nanded 431606, India;2. Shenzhen University, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen, China;3. Department of Chemistry, Hanyang University, Seongdong-gu, Haengdang-dong 17, Seoul 133-791, Republic of Korea;4. Department of Chemistry, College of Science, Bld#5, King Saud University, Riyadh, Saudi Arabia;5. King Abdulaziz City for Science and Technology, Riyadh 11442, Saudi Arabia;1. School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, PR China;2. School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, PR China;1. Department of Materials Science and Engineering, Pusan National University, San 30 Jangjeon-dong, Geumjeong-gu, Busan 609-735, Republic of Korea;2. Department of Mechanical Convergence Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea;3. Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau;4. Global Frontier R&D Center for Hybrid Interface Materials, Pusan National University, 30 Jangjeon-dong, Geumjung-gu, Busan 609-735, Republic of Korea;5. Centre for Nanomaterials & Energy Devices, School of Physical Sciences, SRTM University, 431606, Nanded, India |
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| Abstract: | Cobalt hydroxide carbonate/activated carbon (AC) composite was successfully synthesized by hydrothermal method. Morphological characterizations of cobalt hydroxide carbonate/AC composite were carried out by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the results show that the cobalt hydroxide carbonate nanorods are well dispersed on the AC. Due to the synergistic effects arising from cobalt hydroxide carbonate nanorods and AC, the electrochemical performances of pure cobalt hydroxide carbonate material is significantly improved by the addition of AC. The composite shows a specific capacitance of 301.44 F g?1 at a current density of 1 A g?1 in 6 M KOH electrolyte and exhibits good cycling stability. Based on the above results, the cobalt hydroxide carbonate/AC composite shows a considerable promise as electrode for electrochemical applications. |
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| Keywords: | Cobalt hydroxide carbonates Activated carbon Supercapacitor application Electrode stability Energy storage |
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