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首页> 外文期刊>RSC Advances >Preparation and electrochemical performance of nitrogen-enriched activated carbon derived from silkworm pupae waste
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Preparation and electrochemical performance of nitrogen-enriched activated carbon derived from silkworm pupae waste

机译：富含蚕蛹废物的富含氮活性炭的制备和电化学性能

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摘要

In this study, nitrogen-enriched activated carbon from silkworm pupae waste (P-AC) was successfully prepared and its electrochemical performances in aqueous and organic electrolytes were investigated. Silkworm pupae waste is beneficial because it is a nitrogen-enriched, inexpensive, and locally available material. The preparation process includes hydrothermal treatment of the silkworm pupae waste at 200 degrees C, and chemical activation using zinc chloride at activation temperatures of 700, 800 and 900 degrees C (P700, P800, and P900, respectively). The nitrogen content in the P-ACs was approximately 3.8-6.4 at%, decreasing with activation temperature, while the surface area was approximately 1062-1267 m(2) g(-1), increasing with activation temperature. Compared to a commercial AC, the P-ACs show higher nitrogen content but lower surface area. Furthermore, the P800 exhibited superior specific capacitance (154.6 and 91.6 F g(-1) in aqueous and organic electrolytes) compared to a commercial AC despite possessing smaller surface area. The high nitrogen content enhanced the pseudocapacitance and improved the electrical conductivity of the P-ACs. These properties were confirmed by relatively low series and charge transfer resistances, a capacity retention higher than 88% at a current density of 0.5 A g(-1) and excellent cycling stability demonstrated by maintaining 97.6% of its capacitance after 3000 cycles. These results demonstrate that silkworm pupae waste is a viable source of nitrogen-enriched AC for application in supercapacitors.
机译：在该研究中，成功​​地制备了来自蚕蛹废物（P-AC）的富含氮的活性炭，并研究了水性和有机电解质中的电化学性能。蚕蛹废物是有益的，因为它是富含氮气，廉价和局部可用的材料。制备方法包括在200℃下的自蚕蛹废物的水热处理，以及在活化温度下使用氯化锌的化学活化，在700,800和900摄氏度（P700，P800和P900）中。 P-AC中的氮含量约为3.8-6.4，随着活化温度降低，而表面积约为1062-1267m（2 )g（2 )g（-1），随着活化温度的增加。与商业AC相比，P-AC显示出较高的氮含量但下表面积。此外，尽管具有较小的表面积，但P800在水性和有机电解质中，在水性和有机电解质中表现出优异的特定电容（154.6和91.6fg（-1））。高氮含量增强了假偶联，提高了P-AC的电导率。通过相对较低的串联和电荷转移电阻证实了这些性能，电流保留高于88％，电流密度为0.5Ag（-1），通过在3000次循环后维持其电容的97.6％，通过优异的循环稳定性。这些结果表明，家蚕蛹废物是在超级电容器中施用的富含氮的AC的可行来源。

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  • 来源
    《RSC Advances》 |2019年第18期|共9页
  • 作者

    Sattayarut Vichuda; Chanthad Chalathorn; Khemthong Pongtanawat; Kuboon Sanchai; Wanchaem Thanthamrong; Phonyiem Mayuree; Obata Michiko; Fujishige Masatsugu; Takeuchi Kenji; Wongwiriyapan Winadda; Khanchaitit Paisan; Endo Morinobu;

  • 作者单位

    King Mongkuts Inst Technol Ladkrabang Coll Nanotechnol Chalongkrung Rd Bangkok 10520 Thailand;

    Natl Sci &

    Technol Dev Agcy NSTDA Natl Nanotechnol Ctr NANOTEC Pathum Thani 12120 Thailand;

    Natl Sci &

    Technol Dev Agcy NSTDA Natl Nanotechnol Ctr NANOTEC Pathum Thani 12120 Thailand;

    Natl Sci &

    Technol Dev Agcy NSTDA Natl Nanotechnol Ctr NANOTEC Pathum Thani 12120 Thailand;

    King Mongkuts Inst Technol Ladkrabang Coll Nanotechnol Chalongkrung Rd Bangkok 10520 Thailand;

    King Mongkuts Inst Technol Ladkrabang Coll Nanotechnol Chalongkrung Rd Bangkok 10520 Thailand;

    Shinshu Univ Inst Carbon Sci &

    Technol 4-17-1 Wakasato Nagano 3808553 Japan;

    Shinshu Univ Inst Carbon Sci &

    Technol 4-17-1 Wakasato Nagano 3808553 Japan;

    Shinshu Univ Inst Carbon Sci &

    Technol 4-17-1 Wakasato Nagano 3808553 Japan;

    King Mongkuts Inst Technol Ladkrabang Coll Nanotechnol Chalongkrung Rd Bangkok 10520 Thailand;

    Natl Sci &

    Technol Dev Agcy NSTDA Natl Nanotechnol Ctr NANOTEC Pathum Thani 12120 Thailand;

    Shinshu Univ Inst Carbon Sci &

    Technol 4-17-1 Wakasato Nagano 3808553 Japan;

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