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首页> 外文期刊>Nanotechnology >Tunable growth of perpendicular cobalt ferrite nanosheets on reduced graphene oxide for energy storage
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Tunable growth of perpendicular cobalt ferrite nanosheets on reduced graphene oxide for energy storage

机译：垂直钴铁氧体纳米片的可调谐生长在储能储存中氧化石墨烯氧化物

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摘要

Ultrathin cobalt ferrite nanosheets have been successfully assembled on the surface of reduced graphene oxide (rGO) via only adjusting the volume ratio of ethanol and deionized (DI) water and a post calcination treatment. The perpendicular ultrathin cobalt ferrite nanosheets supported by rGO sheets (CoFe2O4 NSs@ rGO) can be obtained when the volume ratio of ethanol and DI water is 10:30. Correspondingly, the hierarchical porous films covering the total rGO sheets will be formed nanosheets. When evaluated as the electrodes for lithium ion batteries (LIBs) and supercapacitors (SCs), the resultant CoFe2O4 NSs@ rGO hybrids exhibit highly enhanced electrochemical performance. Even after 200 charge-discharge cycles at 400 mA g(-1), the electrodes as the anode material for LIBs still exhibit a reversible discharge capacity of 835.6 mAh g(-1). In addition, this electrode for SCs also exhibits specific capacitance of ca 1120 F g(-1) after 3000 cycles. These superior results imply that CoFe2O4 NSs with novel hybrid structure of rGO could potentially lead to an excellent electrochemical performance for energy storage.
机译：超薄钴铁氧体纳米片已经通过仅调节乙醇的体积比和去离子（DI）水和后焙烧处理被成功地组装还原的石墨烯氧化物（RGO）的表面上。通过RGO片（铁酸钴奈米@ RGO）支持垂直超薄钴铁氧体纳米片可以在乙醇和去离子水的体积比为10:30来获得。相应地，分层的多孔膜覆盖的总RGO片将形成纳米片。当用作用于锂离子电池（LIBS）和超级电容器（SCS）的电极进行评价，所得到的铁酸钴奈米@ RGO杂种表现出高度增强的电化学性能。即使在以400mA克200次充放电循环（-1），电极为LIBS阳极材料仍显示出835.6毫安克（-1）的可逆放电容量。此外，该电极对的SC也3000次循环后表现出的CA 1120 F G（-1）的比电容。这些优异的结果暗示，铁酸钴与奈米球RGO的新颖混合结构可能会导致用于能量储存的优异的电化学性能。

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  • 来源
    《Nanotechnology》 |2017年第5期|共7页
  • 作者

    Dong Bitao; Li Mingyan; Xiao Chunhui; Ding Dawei; Gao Guoxin; Ding Shujiang;

  • 作者单位

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    energy storage; perpendicular nanosheets; rGO; cobalt ferrite;

    机译：储能;垂直纳米蛋白酶;RGO;钴铁氧体;

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