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An efficient metal-free catalyst derived from waste lotus seedpod for oxygen reduction reaction

机译：衍生自废莲花种子用于氧还原反应的有效金属催化剂

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摘要

The sluggish kinetics of oxygen reduction reaction (ORR) has severely impeded the application of fuel cell technology. Developing economical and efficient biomass-based catalysts derived from natural waste to replace the expensive noble metal catalysts is becoming an attractive strategy. However, biomass materials often have geographical and seasonal characteristics. Thus, developing diversified and available biomass-derived catalysts is significant for different regions. In this work, N, P-dual doped porous carbon materials derived from waste lotus seedpod with tunable specific surface areas and porous structure are skillfully fabricated. The optimized sample exhibits excellent oxygen reduction reaction activity with an onset potential of 0.87 V vs. RHE and a Tafel slope of 81 mV dec(-1), showing the 4e(-) electrons transfer path in alkaline solution. It also exhibits much better stability and methanol tolerance than commercial Pt/C. High ORR performance is considered to be ascribed to the abundant N, P dispersion and the hierarchical porous structure.
机译：氧还原反应（ORR）的缓慢动力学严重阻碍了燃料电池技术的应用。衍生自天然废物的经济和高效的生物量催化剂以取代昂贵的贵金属催化剂正在成为一种有吸引力的策略。然而，生物质材料通常具有地理和季节性特征。因此，开发多样化和可用的生物质衍生的催化剂对于不同的区域是显着的。在这项工作中，巧妙地制造从具有可调谐特定表面积和多孔结构的废莲花种子衍生的N，P双掺杂多孔碳材料。优化的样品表现出优异的氧还原反应活性，其发作潜力为0.87V与RHE和The的The和TaFel斜率为81mV（-1），显示碱性溶液中的4E（ - ）电子转移路径。它还表现出比商业Pt / c更好的稳定性和甲醇耐受性。高ORR性能被认为是归因于丰富的N，P分散和分层多孔结构。

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  • 来源
    《Journal of porous materials》 |2020年第3期|637-646|共10页
  • 作者

    Zheng Bo; Wang Jiaxin; Pan Zhaorui; Wang Xiaofeng; Liu Shaoxian; Ding Shiqing; Lang Leiming;

  • 作者单位

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China|Nanjing Univ Posts & Telecommun Key Lab Organ Elect & Informat Displays Inst Adv Mat 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China;

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China;

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China;

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China;

    Nanjing Inst Ind Technol Sch Transportat Engn Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Xiaozhuang Univ Key Lab Adv Funct Mat Nanjing Nanjing 211171 Jiangsu Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biomass-based catalysts; N; P-dual doping; Porous carbon; Metal-free electrocatalyst; Oxygen reduction reaction;

    机译：基于生物质的催化剂;n;p-dual掺杂;多孔碳;无金属电催化剂;氧还原反应;

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