A Template-Free Fabrication of g-C3N4 nanofibers and their supercapacitor Properties
首发时间:2013-12-26
Abstract:In this paper, we have developed a facile, scale up and efficient method for the preparation of graphitic-C3N4 nanofibers (GCNNF) as electrode for supercapacitors. The as-synthesized GCNNF have 1D structure with higher concentration of nitrogen that is favorable for higher conductivity and electrochemical performance. Secondly, high surface area of GCNNF provides large electrode-electrolyte contact area, sufficient light-harvesting and mass-transfer as well as increased the redox potential. Thus, GCNNF supercapacitors electrode shows high capacitance of 263.75 F/g and excellent cyclic durability in 2 M Na2SO4 aqueous electrolyte with the capacitance retention of 93.6% after 2000 cycles at current density of 1 A/g. GCNNF exhibits high capacitance of 208 F/g even at current density of 10 A/g with the good capacitance retention of 89.5%, which proves its good rate capability. As, an economical precursor (melamine) and harmless, facile and template-free synthesis method with excellent performance in supercapacitors make GCNNF a strong candidate for energy storage and environment cleaning applications.
keywords: carbon nitride supercapacitor nanofibers
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无模板制备g-C3N4纳米纤维及其超级电容器性能
摘要:In this paper, we have developed a facile, scale up and efficient method for the preparation of graphitic-C3N4 nanofibers (GCNNF) as electrode for supercapacitors. The as-synthesized GCNNF have 1D structure with higher concentration of nitrogen that is favorable for higher conductivity and electrochemical performance. Secondly, high surface area of GCNNF provides large electrode-electrolyte contact area, sufficient light-harvesting and mass-transfer as well as increased the redox potential. Thus, GCNNF supercapacitors electrode shows high capacitance of 263.75 F/g and excellent cyclic durability in 2 M Na2SO4 aqueous electrolyte with the capacitance retention of 93.6% after 2000 cycles at current density of 1 A/g. GCNNF exhibits high capacitance of 208 F/g even at current density of 10 A/g with the good capacitance retention of 89.5%, which proves its good rate capability. As, an economical precursor (melamine) and harmless, facile and template-free synthesis method with excellent performance in supercapacitors make GCNNF a strong candidate for energy storage and environment cleaning applications.
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