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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：将铁络合物纳米颗粒原位包封到生物质衍生的富含杂原子的碳纳米管中，以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：碳材料的电容性能可以通过增加活性部位的数量，表面积和孔隙率以及将杂原子掺入碳骨架中来增强。然而，通过双电层机理的电荷存储导致改性碳材料的电容的有限增加。在此，我们介绍了一种简单明了的策略，可以利用自然资源原位合成包裹在生物质衍生的N，P掺杂的碳纳米管（NPCNT）中的铁配合物（FeX，其中X包含O，C和P）纳米颗粒，蛋黄是富含杂原子的碳源，铁氰化钾是铁络合物的前体。与源自蛋黄碳化的富含杂原子的碳纳米材料相比，杂原子掺杂的协同功能，FeX纳米颗粒的掺入以及独特的结构特性使所制备的样品具有大大提高的电化学性能。不出所料，FeX @ NPCNTs杂化纳米材料具有出色的电容性能，包括高比电容，令人印象深刻的倍率性能和出色的循环稳定性。使用已制备的FeX @ NPCNTs杂化纳米材料作为电活性材料，最终证明了具有高容量和长期可循环性的对称超级电容器（在10 A g（- 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：生物质衍生富含杂原子的碳纳米管原位包封铁络合物纳米粒子超级电容器;

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