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MgO-templated mesoporous carbons using a pitch-based thermosetting carbon precursor

机译：MgO模板化的中孔碳，使用沥青基热固性碳前体

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摘要

A pitch-based thermosetting amphiphilic carbonaceous material (CP-A5) was converted to mesoporous carbons (MCs) by an MgO-templated method. The yields of MCs were competitive, up to 17%. Temperature-programmed desorption (TPD), thermogravimetric analysis (TG), high-resolution transmission electron microscopy (HRTEM) and N-2 adsorption-desorption were applied to characterize the precursors and MgO-templated MCs. Compared with some published template carbons from thermoplastic materials, less collapse was observed due to the thermosetting property of the carbon precursor. MC73 (MgO/CP-A5 at 7/3 mass ratio) had a surface area of 1991 m(2) g(-1) and interconnected micropores/mesopores, which endowed it with outstanding electrochemical performance in 1 M TEABF(4/)PC organic electrolyte, namely, a gravimetric specific capacitance of 90.8 F g(-1) at 0.05 A g(-1) and a capacitance retention of 91.3% after 10 000 cycles at 1 A g(-1). MC73 is a promising electrode material candidate for energy storage by electrical double layer capacitors. Considering their competitive carbon yields as well as the cyclic ability of MgO, development of MCs from coal tar pitch by an MgO-templated method is feasible and promising, particularly in terms of the upgrade of heavy residues in coal-related industry.
机译：通过MgO模板化方法将基于沥青的热固性两亲碳质材料（CP-A5）转化为中孔碳（MCS）。 MCS产量具有竞争力，高达17％。施加温度编程的解吸（TPD），热重分析（TG），高分辨率透射电子显微镜（HRTEM）和N-2吸附 - 解吸，表征前体和MgO模板MCS。与来自热塑性材料的一些公开的模板相比，由于碳前体的热固性，观察到较少的塌陷。 MC73（MgO / CP-A5，7/3质量比）的表面积为1991m（2）g（-1）和相互连接的微孔/中孔，其在1米茶（4 /）中具有出色的电化学性能。 PC有机电解质，即90.8fg（-1）的重量特定电容在0.05 a g（-1）的0.05 a g（-1）和10 000次循环后的电容保留为1 a g（-1）。 MC73是由电双层电容器能量存储的有希望的电极材料候选者。考虑到竞争性碳产量以及MgO的循环能力，通过MgO模板方法从煤焦油沥青发育MCS是可行和有前途的，特别是在煤炭有关行业中重型残留物的升级方面。

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  • 来源
    《RSC Advances》 |2016年第102期|共8页
  • 作者

    Wang Xiu-fang; Chen Ming-ming; Matsumura Kazuki; Toyoda Masahiro; Wang Cheng-yang;

  • 作者单位

    Tianjin Univ Sch Chem Engn &

    Technol Key Lab Green Chem Technol MOE Tianjin 300350 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Key Lab Green Chem Technol MOE Tianjin 300350 Peoples R China;

    Oita Univ Dept Appl Chem Fac Engn 700 Dannoharu Oita 8701192 Japan;

    Oita Univ Dept Appl Chem Fac Engn 700 Dannoharu Oita 8701192 Japan;

    Tianjin Univ Sch Chem Engn &

    Technol Key Lab Green Chem Technol MOE Tianjin 300350 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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