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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >A facile preparation of pomegranate-like porous carbon by carbonization and activation of phenolic resin prepared via hydrothermal synthesis in KOH solution for high performance supercapacitor electrodes
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A facile preparation of pomegranate-like porous carbon by carbonization and activation of phenolic resin prepared via hydrothermal synthesis in KOH solution for high performance supercapacitor electrodes

机译：通过在KOH溶液中通过水热合成制备的酚醛树脂的碳化和活化来制备石榴样多孔碳的高性能超级电容器电极

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摘要

High electrochemical performance pomegranate-like porous carbon was synthesized by the carbonization and activation of phenolic resin which was prepared by adding phenolic resin monomer mixture into KOH aqueous solution and hydrothermal treatment. In the process of hydrothermal, KOH solution could hinder the polymerization of phenolic resin monomer to form big phenolic resin particles. During the carbonization, phenolic resin plays the role of forming small particles and binder during carbonization, which can simultaneously achieve high specific surface area and form three dimensional structures to improve the conductivity. The results showed that pomegranate-like porous carbon composed of small nanometer-scale particles was observed. The obtained porous carbon electrode materials had a high content of micropores with specific surface area as high as 2199.9 m(2) g(-1). The porous carbon exhibited a high specific capacitance of 341.3 F g(-1) at 0.1 A g(-1), good rate capability with 71.0% retention from 0.1 to 5 A g(-1). Moreover, it showed high capacitance retention of 96.1% after 5000 cycles at a scan rate of 50 mV s(-1), indicating excellent cycling stability. The assembled symmetrical supercapacitor showed high energy densities of 17.0 Wh kg(-1) and 8.5 Wh kg(-1) with the corresponding power densities of 49.6 W kg(-1) and 1.8 kW kg(-1), respectively. The facile method could be a promising candidate for preparing porous carbon electrode materials with excellent electrochemical performance in the fields of supercapacitors. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：通过将酚醛树脂单体混合物添加到KOH水溶液和水热处理中，通过酚醛树脂的碳化和活化合成高电化学性能石榴样多孔碳。在水热的过程中，KOH溶液可能阻碍酚醛树脂单体的聚合以形成大酚醛树脂颗粒。在碳化期间，酚醛树脂起在碳化期间形成小颗粒和粘合剂的作用，该碳化可以同时实现高比表面积并形成三维结构以提高导电性。结果表明，观察到由小纳米级颗粒组成的石榴状多孔碳。所获得的多孔碳电极材料具有高含量的微孔，比表面积高达2199.9m（2）g（-1）。多孔碳在0.1Ag（-1），良好的速率能力下显示出341.3°F G（-1）的高比电容，71.0％的0.1至5Ag（-1）。此外，在50mV S（-1）的扫描速率下，在5000个循环后显示出高电容保留96.1％，表明优异的循环稳定性。组装的对称超级电容器显示出高能量密度为17.0WH kg（-1）和8.5WH kg（-1），其相应的功率密度分别为49.6W kg（-1）和1.8 kW kg（-1）。容纳方法可以是用于制备多孔碳电极材料的有希望的候选者，其在超级电容器领域具有优异的电化学性能。 （c）2019年日本粉末技术学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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