【摘要】 本文报道了一种新的"由软到硬的模板"策略,通过碳源(多巴胺)和硅源(正硅酸乙酯)的共聚合合成了分散性良好的N掺杂介孔碳纳米球(MCNs).该方法克服了复杂软模板和硬模板法难以控制MCNs分散性的问题.获得的MCNs含有丰富的N掺杂物种,且易于实现贵金属纳米颗粒的负载.该MCNs可应用于多领域.本文研究了其超电容特性:在1 mol/L Na OH溶液中,当电流密度为0.4和10 A/g时,该MCNs电极电容可分别达到223和140 F/g.更多还原

【Abstract】 Here we report a new approach referred as ‘‘softto-hard templating’’ strategy via the copolymerization of carbon source(dopamine) and silica source(tetraethyl orthosilicate) for the synthesis of well dispersed N-doped mesoporous carbon nanospheres(MCNs), which exhibit high performance for electrochemical supercapacitor. This method overcomes the shortcoming of uncontrolled dispersity and complicated procedures of soft- or hard-templating methods, respectively. Moreover, the synthesized MCNs feature enriched heteroatom N-doping and easy functionalization by noble-metal nanoparticles during the one-pot synthesis. All the above characters make the asprepared MCNs a promising platform in a variety of applications. To demonstrate the applicability of the synthesized nitrogen-doped MCNs, this material has been employed as an electrode for high-performance electrochemical supercapacitor, which shows a capacitance of 223 and 140 F/g at current densities of 0.5 and 10 A/g in1 mol/L KOH electrolyte, respectively.更多还原