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UZnCl_2-DES assisted synthesis of phenolic resin-based carbon aerogels for capacitors

机译：UZNCL_2-DES辅助合成电容器的酚醛树脂基碳气凝胶

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摘要

Herein we have reported the preparation of carbon materials for capacitors from phenolic resin in the presence of deep eutectic solvent (DES). Resole was used as carbon precursor and DES synthesized from ZnCl(2)and urea in a molar ration of 3:10 served as pore former and mixed with the resole for the preparation of organic gels, which were then converted to carbon aerogels via carbonization. The physicochemical properties as well as the electrochemical properties of the obtained carbon products were investigated by X-ray diffraction, X-ray photoelectron spectroscopy, Nitrogen absorption/desorption test, cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectra. The results show that the formation of DES, rather than the solid mixture of ZnCl(2)and urea, is more effective for the fast and low temperature preparation of phenolic resin-based carbon aerogels with higher specific surface area and enhanced electrochemical performance. After further activation, the carbon aerogel possesses a highest surface area of 1238.81 m(2 )g(-1)and a highest specific capacitance of 179.6 F g(-1)at the current density of 1 A g(-1).
机译：在本文中，我们报道了在深共晶溶剂（DES）存在下从酚醛树脂的电容器制备碳材料。使用Resole用作碳前体和由ZnCl（2）和尿素合成的DES，其摩尔率为3:10的摩尔额为孔前剂，并与用于制备有机凝胶的resole混合，然后通过碳化转化为碳气凝胶。通过X射线衍射，X射线光电子能谱，氮吸收/解吸试验，循环伏安法，电化学电荷 - 放电和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学阻抗和电化学性能以及所述物理化学性质以及所述碳产物的电化学性质。结果表明，对于ZnCl（2）和尿素的固体混合物，对酚醛树脂的碳气凝胶的快速和低温制备具有更高的比表面积和增强的电化学性能，更有效。在进一步激活之后，碳气泡具有1238.81m（2）g（-1）的最高表面积，并且在电流密度为1 a g（-1）的最高特定电容为179.6 f g（-1）。

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  • 来源
    《Journal of porous materials》 |2020年第3期|789-800|共12页
  • 作者

    Deng Junqian; Chen Ling; Hong Shu; Lian Hailan;

  • 作者单位

    Nanjing Forestry Univ Coll Mat Sci & Technol Nanjing 210037 Peoples R China|Jiangsu Engn Res Ctr Fast Growing Trees & Agrifib Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Mat Sci & Technol Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Mat Sci & Technol Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Mat Sci & Technol Nanjing 210037 Peoples R China|Jiangsu Engn Res Ctr Fast Growing Trees & Agrifib Nanjing 210037 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Phenolic resin; Carbon aerogels; Deep eutectic solvent; Electrochemistry;

    机译：酚醛树脂;碳气凝胶;深共晶溶剂;电化学;

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