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首页> 外文期刊>Advanced energy materials >In Situ Encapsulation of Iron Complex Nanoparticles into Biomass-Derived Heteroatom-Enriched Carbon Nanotubes for High-Performance Supercapacitors
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In Situ Encapsulation of Iron Complex Nanoparticles into Biomass-Derived Heteroatom-Enriched Carbon Nanotubes for High-Performance Supercapacitors

机译：原位封装铁络合物纳米颗粒在生物质衍生的富含氧碳纳米管中，用于高性能超级电容器

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摘要

The capacitive performance of carbon materials could be enhanced by means of increasing the number of active sites, the surface area, and the porosity as well as through incorporating heteroatoms into the carbon framework. However, the charge storage through electric double-layer mechanism results in limited increase in capacitance of modified carbon materials. Herein, a simple and straightforward strategy is introduced for in situ synthesizing iron complex (FeX, which X includes O, C, and P) nanoparticles encapsulated into biomass-derived N, P-codoped carbon nanotubes (NPCNTs), using a natural resource, egg yolk, as heteroatom-enriched carbon sources and potassium ferricyanide as the precursor for iron complex. Compared with heteroatom-enriched carbon nanomaterials derived from the carbonization of egg yolk, the synergetic function of the heteroatom doping, the incorporation of FeX nanoparticles, and the unique structural characteristics endows the as-prepared sample with largely improved electrochemical performance. As expected, FeX@NPCNTs hybrid nanomaterials exhibit superior capacitive performance, including high specific capacitance, impressive rate performance, and excellent cycle stability. Using the as-prepared FeX@NPCNTs hybrid nanomaterials as electroactive materials, a symmetric supercapacitor with high capacity and a long-term cyclability is finally demonstrated (more than 99% capacitance retention after 50 000 cycles at a current density of 10 A g(-1)).
机译：通过增加活性位点，表面积和孔隙率的数量以及通过将杂原子掺入碳骨架中，可以提高碳材料的电容性能。然而，通过电双层机构的电荷存储导致改性碳材料电容有限增加。在此，使用自然资源，以原位合成铁络合物（FEX，该X包括X，C）纳米颗粒引入简单和简单的策略，该纳米粒子使用自然资源，纳米颗粒（NPCNT），蛋黄，作为富杂的碳源和铁氰化钾作为铁络合物的前体。与富含蛋黄碳化的碳化碳纳米材料相比，杂原子掺杂的协同功能，掺入Fex纳米粒子，以及独特的结构特征，赋予了各大的电化学性能的制备样品。正如预期的那样，FEX @ NPCNTS杂交纳米材料表现出优异的电容性能，包括高比电容，令人印象深刻的速率性能和优异的循环稳定性。使用AS制备的FEX @ NPCNTS杂交纳米材料作为电活性材料，最终展示了具有高容量和长期环绕性的对称超级电容器（在电流密度为10 A g的50 000周期后超过99％电容保留）（ - 1））。

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  • 来源
    《Advanced energy materials》 |2019年第4期|1803221.1-1803221.8|共8页
  • 作者

    Zhang Jingling; Zhao Huaping; Li Jun; Jin Huile; Yu Xiaochun; Lei Yong; Wang Shun;

  • 作者单位

    Wenzhou Univ Coll Chem & Mat Engn Inst New Mat & Ind Technol Key Lab Carbon Mat Zhejiang Prov Wenzhou 325035 Peoples R China;

    Tech Univ Ilmenau Inst Phys Fachgebiet Angewante Nanophys D-98693 Ilmenau Germany|Tech Univ Ilmenau IMN MacroNano ZIK D-98693 Ilmenau Germany;

    Wenzhou Univ Coll Chem & Mat Engn Inst New Mat & Ind Technol Key Lab Carbon Mat Zhejiang Prov Wenzhou 325035 Peoples R China;

    Wenzhou Univ Coll Chem & Mat Engn Inst New Mat & Ind Technol Key Lab Carbon Mat Zhejiang Prov Wenzhou 325035 Peoples R China;

    Wenzhou Univ Coll Chem & Mat Engn Inst New Mat & Ind Technol Key Lab Carbon Mat Zhejiang Prov Wenzhou 325035 Peoples R China;

    Tech Univ Ilmenau Inst Phys Fachgebiet Angewante Nanophys D-98693 Ilmenau Germany|Tech Univ Ilmenau IMN MacroNano ZIK D-98693 Ilmenau Germany;

    Wenzhou Univ Coll Chem & Mat Engn Inst New Mat & Ind Technol Key Lab Carbon Mat Zhejiang Prov Wenzhou 325035 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    biomass derived; heteroatom-enriched carbon nanotubes; in situ encapsulation; iron complex nanoparticles; supercapacitors;

    机译：生物质衍生;富含杂种碳纳米管;原位封装;铁复合纳米颗粒;超级电容器;

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