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首页> 外文期刊>RSC Advances >Boron/nitrogen co-doped carbon synthesized from waterborne polyurethane and graphene oxide composite for supercapacitors
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Boron/nitrogen co-doped carbon synthesized from waterborne polyurethane and graphene oxide composite for supercapacitors

机译：硼/氮的共掺杂碳由水性聚氨酯和石墨烯氧化物复合物用于超级电容器合成

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摘要

We report B/N co-doped carbon materials synthesized by an efficient and easy one-step carbonization method with ferric catalyst treatment from a precursor with boric acid treatment after the formation of the composite between waterborne polyurethane (WPU) and graphene oxide (GO). The nitrogen content was improved with the introduction of numerous melamine in the synthetic process of WPU. In addition, WPU possessed a repetitive basic unit urethane bond (-NHCOO); thus, nitrogen heteroatom could be efficiently introduced into the WPU/GO composite from WPU as a nitrogen-rich carbon. In addition, the specific surface area was increased by the boric acid treatment and washing process. The ferric catalyst treatment could prevent the formation of inert B-N bonds. Thus, the synthesized B/N co-doped carbon materials exhibited high specific capacitance (330 F g(-1) at 0.5 A g(-1)), superior rate performance, and excellent cycling stability. Furthermore, the assembled symmetric supercapacitor displayed a good energy density (7.9 W h kg(-1) at 505 W kg(-1)) and a good capacitance retention of about 89.9% after 5000 charge-discharge cycles in 6 M KOH electrolyte. Therefore, the as-prepared B/N co-doped carbon materials show a promising future in supercapacitor application.
机译：我们报告了通过高效易一步碳化法合成的B / N共掺杂碳材料，通过在水性聚氨酯（WPU）和石墨烯（GO）之间的复合材料中形成具有硼酸处理的前体的丙酸催化剂处理合成。 。随着WPU的合成过程中的许多三聚氰胺，改善了氮含量。此外，WPU具有重复的基本单元聚氨酯键（-NHCOO）;因此，可以将氮杂原子有效地从WPU作为富含氮碳的WPU /去复合材料。此外，通过硼酸处理和洗涤过程增加了比表面积。铁催化剂处理可以防止惰性B-N键的形成。因此，合成的B / N共掺杂碳材料在0.5Ag（-1）），优异的速率性能和优异的循环稳定性下表现出高的比电容（330 f g（-1）。此外，组装的对称超级电容器显示出良好的能量密度（7.9WH kg（-1），在505W kg（-1））中，在6M KOH电解质中5000个电荷 - 放电循环后的良好电容保持约为89.9％。因此，AS制备的B / N共掺杂碳材料在超级电容器应用中显示出未来的未来。

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  • 来源
    《RSC Advances》 |2019年第3期|共11页
  • 作者

    Li Rui; Qin Chuanli; Zhang Xuxu; Lin Zitong; Lv Shixian; Jiang Xiankai;

  • 作者单位

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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