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Bifunctional biomass-derived 3D nitrogen-doped porous carbon for oxygen reduction reaction and solid-state supercapacitor

机译：用于氧还原反应的双功能生物质衍生3D氮掺杂多孔碳和固态超级电容器

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摘要

Biomass-derived carbon materials have garnered intensive consideration in energy fields, such as fuel cells and supercapacitors, due to their inexpensive precursors, abundant resources and facile synthesis. Herein, we report a facile strategy based on taro stem precursor to synthesize a 3D nitrogen-doped porous carbon (3DNPC) with micropores, mesopores, macropores, large specific surface area (1012 m(2) g(-1)) and nitrogen content (4.8 at%), which displays high catalytic activity and stability for oxygen reduction reaction and good electrochemical properties for supercapacitors. Compared with the commercial Pt/C catalysts, the 3DNPC-800 with 3D porous structure, proper total doped N and high graphitic N content, presents brilliant long-term stability (96.5% retention after 20,000 s) and resistance to methanol crossover for oxygen reduction reaction. With respect to electrode material of supercapacitor, the 3DNPC-800 possesses high specific capacitance (236.4F g(-1) at 0.1 A g(-1)) and outstanding long cycle durability (89.3% retention after 10,000 cycles at 20 A g(-1)). Moreover, the prepared symmetric solid-state supercapacitor devices achieve outstanding power density (5 kW kg(-1) at 5.56 Wh kg(-1)). Consequently, economically and sustainably utilization nature of materials to fabricate heteroatom-doped carbon materials, having great potential in electrochemical applications, is presented.
机译：由于生物质衍生的碳材料前体价格低廉，资源丰富且易于合成，因此在能源领域（例如燃料电池和超级电容器）已引起广泛关注。在本文中，我们报告了一种基于芋头茎前体的简便策略，可以合成具有微孔，中孔，大孔，大比表面积（1012 m（2）g（-1））和氮含量的3D氮掺杂多孔碳（3DNPC） （4.8 at％），对氧还原反应具有高催化活性和稳定性，对超级电容器也具有良好的电化学性能。与商用Pt / C催化剂相比，具有3D多孔结构，适当的总掺杂N和较高的石墨N含量的3DNPC-800具有出色的长期稳定性（20,000 s后保留率96.5％）和耐甲醇穿越性，可减少氧气反应。对于超级电容器的电极材料，3DNPC-800具有高比电容（在0.1 A g（-1）时为236.4F g（-1））和出色的长循环耐久性（在20 A g（10,000次循环后，保留率为89.3％） -1））。此外，准备好的对称固态超级电容器器件可实现出色的功率密度（5.56 Wh kg（-1）时为5 kW kg（-1））。因此，提出了材料的经济和可持续利用性质来制造在电化学应用中具有巨大潜力的杂原子掺杂的碳材料。

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  • 来源
    《Applied Surface Science》 |2019年第28期|303-312|共10页
  • 作者

    He Donglin; Zhao Wang; Li Ping; Liu Zhiwei; Wu Haoyang; Liu Luan; Han Kun; Liu Lang; Wan Qi; Butt Faheem K.; Qu Xuanhui;

  • 作者单位

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

    Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia;

    Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China;

    Univ Educ, Div Sci & Technol, Dept Phys, Coll Rd, Lahore 54770, Pakistan;

    Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Oxygen reduction reaction; Solid state supercapacitor; Nitrogen-doped porous carbon; Taro stems;

    机译：氧还原反应固态超级电容器氮掺杂多孔碳芋头茎;

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