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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Nitrogen-phosphorus co-doped hollow carbon microspheres with hierarchical micro-meso-macroporous shells as efficient electrodes for supercapacitors
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Nitrogen-phosphorus co-doped hollow carbon microspheres with hierarchical micro-meso-macroporous shells as efficient electrodes for supercapacitors

机译：氮磷共掺杂中空碳微球，具有等级微米 - 大孔壳作为超级电容器的有效电极

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摘要

Nitrogen-phosphorus co-doped hierarchical porous carbon microspheres (NPHCMs) have been prepared through combining polymerization of melamine-formaldehyde resin with co-assembly of colloidal silica nanospheres by using melamine and formaldehyde as carbon and nitrogen sources, and 1-hydroxyethylidene-1,1-diphosphonic acid as the catalyst and phosphorus source. After carbonization and silica removal, the obtained NPHCMs possess high surface areas of 563-720 m(2) g(-1) with micropores, bimodel mesopores (2.6 and 3.7 nm) and macropores (250 nm) distributed in the shell. Owing to the incorporation of abundant N (7.0-15.35%) and P (0.09-0.16%) in the carbon matrix and the interconnected micro-, meso-, and macroporous structure, the NPHCMs exhibit good capacitive performances. The 800 degrees C-carbonized sample shows a high specific capacitance and good rate capability (200 F g(-1) at 0.5 A g(-1) and 132 F g(-1) at 20 A g(-1)) in 6 M KOH electrolyte. The all-solid-state electrode fabricated from the NPHCMs presents a high specific capacitance of 180 F g(-1) at 0.5 A g(-1) and long cycle life with 91% capacitance retention after 5000 cycles at 0.5 A g(-1) in a polyvinyl alcohol/KOH gel electrolyte, suggesting its great potential for the development of high-performance energy storage devices.
机译：通过使用三聚氰胺二氧化硅纳米球的共组合使用三聚氰胺和甲醛作为碳和氮源，1-羟基乙基-1，通过将三聚氰胺 - 甲醛树脂的聚合物组合制备氮磷共掺杂分层多孔碳微球（NPHCMS）。 1-二膦酸作为催化剂和磷来源。在碳化和二氧化硅去除后，所得NPhcms具有563-720m（2 )g（-1）的高表面积，微小孔，Bimodel中孔（2.6和3.7nm）和分布在壳中的大孔（250nm）。由于碳基质中的丰富N（7.0-15.35％）和P（0.09-0.16％）并在碳基质和互连的微观，中间，中间，和大孔结构中，NPHCMS表现出良好的电容性能。 800℃碳化样品显示出高比电容和良好的速率能力（200fg（-1），在0.5Ag（-1）和132 f g（-1）时，在20 a g（-1））中6 M KOH电解质。由NPHCM制造的全固态电极在0.5Ag（-1）和长循环寿命下，在0.5A循环（ - 1）在聚乙烯醇/ KOH凝胶电解质中，表明其开发高性能储能装置的巨大潜力。

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    Zhang Ning; Liu Feng; Xu Shi-Da; Wang Feng-Yun; Yu Qing; Liu Lei;

  • 作者单位

    Shandong Univ Sci &

    Technol Sch Mat Sci &

    Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Sch Mat Sci &

    Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Sch Mat Sci &

    Engn Qingdao 266590 Peoples R China;

    Qingdao Univ Coll Phys Cultivat Base State Key Lab Qingdao 266071 Peoples R China;

    Shandong Univ Sci &

    Technol Sch Mat Sci &

    Engn Qingdao 266590 Peoples R China;

    Shandong Univ Sci &

    Technol Sch Mat Sci &

    Engn Qingdao 266590 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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