https://scholars.lib.ntu.edu.tw/handle/123456789/425290
Title: | Screen-printed SnO 2 /CNT quasi-solid-state gel-electrolyte supercapacitor | Authors: | Kuok F.-H. Liao C.-Y. Chen C.-W. Hao Y.-C. Yu I.-S. Chen J.-Z. JIAN-ZHANG CHEN |
Keywords: | carbon nanotube;nanocomposite;SnO 2;supercapacitor | Issue Date: | 2017 | Journal Volume: | 4 | Journal Issue: | 11 | Source: | Materials Research Express | Abstract: | This study investigates a quasi-solid-state gel-electrolyte supercapacitor fabricated with nanoporous SnO 2 /CNT nanocomposite electrodes and a polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) gel electrolyte. First, pastes containing SnO 2 nanoparticles, CNTs, ethyl cellulose, and terpineol are screen-printed onto carbon cloth. A tube furnace is then used for calcining the SnO 2 /CNT electrodes on carbon cloth. After furnace-calcination, the wettability of SnO 2 /CNT significantly improved; furthermore, the XPS analysis shows that number of C-O bond and oxygen content significantly decrease after furnace-calcination owing to the burnout of the ethyl cellulose by the furnace calcination processes. The furnace-calcined SnO 2 /CNT electrodes sandwich the PVA/H 2 SO 4 gel electrolyte to form a supercapacitor. The fabricated supercapacitor exhibits an areal capacitance of 5.61 mF cm -2 when flat and 5.68 mF cm -2 under bending with a bending radius (R) of 1.0 cm. After a 1000 cycle stability test, the capacitance retention rates of the supercapacitor are 96% and 97% when flat and under bending (R = 1.0 cm), respectively. ? 2017 IOP Publishing Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425290 | ISSN: | 20531591 | DOI: | 10.1088/2053-1591/aa9405 |
Appears in Collections: | 應用力學研究所 |
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