Polymer Dehalogenation-Enabled Fast Fabrication of N,S-Codoped Carbon Materials for Superior Supercapacitor and Deionization Applications
| Autor: | Haoyuan Li, Guoxin Zhang, Yingchun Pang, Zheng Chang, Biao Han, Yingna Chang, Cejun Hu, Xiaoming Sun |
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| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
Materials science Dopant Capacitive deionization Heteroatom Doping Inorganic chemistry 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Specific surface area General Materials Science 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 9:29753-29759 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Doped carbon materials (DCM) with multiple heteroatoms hold broad interest in electrochemical catalysis and energy storage but require several steps to fabricate, which greatly hinder their practical applications. In this study, a facile strategy is developed to enable the fast fabrication of multiply doped carbon materials via room-temperature dehalogenation of polyvinyl dichloride (PVDC) promoted by KOH with the presence of different organic dopants. A N,S-codoped carbon material (NS-DCM) is demonstratively synthesized using two dopants (dimethylformamide for N doping and dimethyl sulfoxide for S doping). Afterward, the precursive room-temperature NS-DCM with intentionally overdosed KOH is submitted to inert annealing to obtain large specific surface area and high conductivity. Remarkably, NS-DCM annealed at 600 °C (named as 600-NS-DCM), with 3.0 atom % N and 2.4 atom % S, exhibits a very high specific capacitance of 427 F g–1 at 1.0 A g–1 in acidic electrolyte and also keeps ∼60% of capacitance at ultr... |
| Databáze: | OpenAIRE |
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