超级电容器
正硅酸乙酯
材料科学
介孔材料
分散性
共聚物
碳纤维
杂原子
纳米技术
化学工程
纳米颗粒
电化学
介孔二氧化硅
电解质
电极
催化作用
化学
有机化学
高分子化学
复合材料
聚合物
复合数
工程类
戒指(化学)
物理化学
作者
Qinglu Kong,Lingxia Zhang,Min Wang,Mengli Li,Heliang Yao,Jianlin Shi
标识
DOI:10.1007/s11434-016-1119-6
摘要
Here we report a new approach referred as "soft-to-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 as-prepared 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 in 1 mol/L KOH electrolyte, respectively.
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