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首页> 外文期刊>Journal of Materials Research >Hierarchical mesoporous Zn-Ni-Co-S microspheres grown on reduced graphene oxideickel foam for asymmetric supercapacitors
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Hierarchical mesoporous Zn-Ni-Co-S microspheres grown on reduced graphene oxideickel foam for asymmetric supercapacitors

机译：在不对称超级电容器的还原氧化石墨烯/镍泡沫上生长的层状介孔Zn-Ni-Co-S微球

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摘要

In this work, hierarchical mesoporous Zn-Ni-Co-S-rGO/NF microspheres have been prepared by hydrothermal, sulfurization, and subsequent calcination process. The effect of different sulfurization time on the morphology and capacitance of composites was tested. The high electrochemical performance of (Zn-Ni-Co-S-rGO/NF) composite was obtained when the sulfurization time was 3 h (Zn-Ni-Co-S-rGO/NF-3h), where a specific capacitance of 627.7 F/g at 0.25 A/g and excellent rate capability of about 97.8% capacitance retention at 2 A/g after 4000 cycles were achieved. Moreover, an asymmetric supercapacitor fabricated by (Zn-Ni-Co-S-rGO/NF-3h) composite and activated carbon (AC) as the positive and the negative electrodes, respectively, showed a high energy density of 75.96 W h/kg at a power density of 362.49 W/kg with a remarkable cycle stability performance of 91.2% capacitance retention over 5000 cycles. This incredible electrochemical behavior illustrates that the hierarchical mesoporous Zn-Ni-Co-S-rGO/N-3h microsphere electrodes are promising electrode materials for application in high-performance supercapacitors.
机译：在这项工作中，已经通过水热，硫化和随后的煅烧过程制备了分级的介孔Zn-Ni-Co-S-rGO / NF微球。测试了不同硫化时间对复合材料的形貌和电容的影响。硫化时间为3 h（Zn-Ni-Co-S-rGO / NF-3h）时，（Zn-Ni-Co-S-rGO / NF）复合材料具有较高的电化学性能，比电容为627.7在0.25 A / g的F / g和4000次循环后，在2 A / g的电容保持率达到了约97.8％的优异倍率能力。此外，由（Zn-Ni-Co-S-rGO / NF-3h）复合材料和活性炭（AC）分别作为正电极和负电极制造的不对称超级电容器表现出75.96 W h / kg的高能量密度。功率密度为362.49 W / kg，在5000次循环中具有显着的循环稳定性，电容保持率为91.2％。这种令人难以置信的电化学行为表明，分级介孔的Zn-Ni-Co-S-rGO / N-3h微球电极是用于高性能超级电容器的有前途的电极材料。

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  • 来源
    《Journal of Materials Research》 |2019年第14期|2445-2455|共11页
  • 作者

    Evariste Uwamahoro; Jiang Guohua; Yu Bo; Liu Yongkun; Huang Zheng; Lu Qiuling; Ma Pianpian;

  • 作者单位

    Natl Engn Lab Text Fiber Mat & Proc Technol Zheji, Hangzhou 310018, Zhejiang, Peoples R China|Minist Educ, Key Lab Adv Text Mat & Mfg Technol ATMT, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Inst Smart Fiber Mat, Hangzhou 310018, Zhejiang, Peoples R China;

    Natl Engn Lab Text Fiber Mat & Proc Technol Zheji, Hangzhou 310018, Zhejiang, Peoples R China|Minist Educ, Key Lab Adv Text Mat & Mfg Technol ATMT, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Inst Smart Fiber Mat, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Dept Polymer Engn, Hangzhou 310018, Zhejiang, Peoples R China;

    Natl Engn Lab Text Fiber Mat & Proc Technol Zheji, Hangzhou 310018, Zhejiang, Peoples R China|Minist Educ, Key Lab Adv Text Mat & Mfg Technol ATMT, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Inst Smart Fiber Mat, Hangzhou 310018, Zhejiang, Peoples R China;

    Natl Engn Lab Text Fiber Mat & Proc Technol Zheji, Hangzhou 310018, Zhejiang, Peoples R China|Minist Educ, Key Lab Adv Text Mat & Mfg Technol ATMT, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Inst Smart Fiber Mat, Hangzhou 310018, Zhejiang, Peoples R China;

    Zhejiang Sci Tech Univ, Dept Polymer Engn, Hangzhou 310018, Zhejiang, Peoples R China;

    Zhejiang Sci Tech Univ, Dept Polymer Engn, Hangzhou 310018, Zhejiang, Peoples R China;

    Natl Engn Lab Text Fiber Mat & Proc Technol Zheji, Hangzhou 310018, Zhejiang, Peoples R China|Minist Educ, Key Lab Adv Text Mat & Mfg Technol ATMT, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Inst Smart Fiber Mat, Hangzhou 310018, Zhejiang, Peoples R China|Zhejiang Sci Tech Univ, Dept Polymer Engn, Hangzhou 310018, Zhejiang, Peoples R China;

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

    electrochemical properties; electronic material; energy storage; supercapacitors;

    机译：电化学性能;电子材料;储能;超级电容器;

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