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Thermal conversion of an anion-exchange resin: a new catalytic-graphitization route to prepare porous carbons with a high graphitization degree for supercapacitors

机译:阴离子交换树脂的热转化:一种新的催化石墨化路线,以制备具有高石墨化度的超级电容器用多孔碳

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摘要

In this work, a new catalytic-graphitization route has been developed to prepare porous carbons with a high graphitization degree (denoted as GPCs). By using anion-exchange resins (AERs) as carbon precursors, and K-3[Fe(CN)(6)] as a catalyst precursor, the obtained GPCs exhibit an improved graphitization degree with the increase in carbonization temperature. Furthermore, the capacitive performances of GPC-based electrodes were investigated in a three-electrode system. The result shows that the GPC obtained at 800 degrees C (GPC-800) displays the best capacitive performances amongst all GPC samples, possibly due to its improved graphitization degree. When constructed as a practical supercapacitor, the GPC-800-based supercapacitor exhibits a high energy density of 22.1 W h kg(-1), good rate capability and a stable cycling ability. It is believed that our method opens a new door for the synthesis of high-graphitization porous carbons.
机译:在这项工作中,已经开发出一种新的催化石墨化路线来制备具有高石墨化度的多孔碳(称为GPC)。通过使用阴离子交换树脂(AERs)作为碳前体,并使用K-3 [Fe(CN)(6)]作为催化剂前体,所得的GPC随着碳化温度的升高而呈现出改善的石墨化度。此外,在三电极系统中研究了基于GPC的电极的电容性能。结果表明,在800摄氏度下获得的GPC(GPC-800)在所有GPC样品中显示出最佳的电容性能,这可能是由于其石墨化度提高了。当构造为实用的超级电容器时,基于GPC-800的超级电容器具有22.1 W h kg(-1)的高能量密度,良好的倍率能力和稳定的循环能力。相信我们的方法为合成高石墨化多孔碳打开了新的大门。

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  • 来源
    《RSC Advances》 |2016年第113期|共5页
  • 作者

    Xu Haifeng;

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  • 正文语种 eng
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