Facile Synthesis of Nitrogen‐Doped Mesoporous Hollow Carbon Nanospheres for High‐Performance Supercapacitors,ChemElectroChem

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Facile Synthesis of Nitrogen‐Doped Mesoporous Hollow Carbon Nanospheres for High‐Performance Supercapacitors
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-05-29 , DOI: 10.1002/celc.201800597
Zhongbing Wang ₁ , Hongwen Qiang ₁ , Zihao Zhu ₁ , Jinpeng Liu ₁ , Chunnian Chen ₁ , Dawei Zhang ₁

Affiliation

We report the facile preparation of nitrogen‐doped mesoporous hollow carbon nanospheres (N‐MHCNS) by directly carbonizing hollow polypyrrole nanospheres that are derived from in situ polymerization. Here, we use a novel soft template (PMMA‐PBMA‐PMAA) as the core. At 700 °C, the obtained N‐MHCNSs (denoted N‐MHCNS700) show superior electrochemical performance. In 1 M HCl electrolyte, N‐MHCNS700 exhibits a capacitance as high as 275.5 F g⁻¹ at a current density of 1 A g⁻¹ and a high rate capability, retaining 54.4 % of the initial capacitance at the current density of 20 A g⁻¹. In addition, the specific capacitance of N‐MHCNS700 is approximately 100 % retained at a current density of 10 A g⁻¹ after 5000 cycles, indicating amazing stable cycling performance. The excellent electrochemical performance can be derived from the amorphous graphitic carbon, hollow nanosphere structure, mesoporous properties, and nitrogen doping effect.

中文翻译：

高性能超级电容器的氮掺杂介孔中空碳纳米球的简便合成

我们报告了通过直接碳化衍生自原位聚合反应的中空聚吡咯纳米球来轻松制备氮掺杂的介孔中空碳纳米球（N-MHCNS）的方法。在这里，我们使用一种新颖的软模板（PMMA‐PBMA‐PMAA）作为核心。在700°C下，获得的N-MHCNS（表示为N-MHCNS700）显示出优异的电化学性能。在1 M HCl电解液中，N‐MHCNS700在1 A g ^-1的电流密度下表现出高达275.5 F g ^-1的电容，并且具有高倍率能力，在20 A的电流密度下保持54.4％的初始电容g ^-1。此外，在电流密度为10 A g ^-1时，N‐MHCNS700的比电容大约保持100％经过5000次循环后，显示出惊人的稳定循环性能。优异的电化学性能可源自无定形石墨碳，中空纳米球结构，中孔性质和氮掺杂效果。

更新日期：2018-05-29

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