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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >MOF-derived hollow NiCo2O4 nanowires as stable Li-ion battery anodes
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MOF-derived hollow NiCo2O4 nanowires as stable Li-ion battery anodes

机译：MOF-衍生的空心NiCO2O4纳米线作为稳定的锂离子电池阳极

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摘要

Although binary metal oxides with high theoretical specific capacities and power densities are widely investigated as promising anode materials for lithium-ion batteries (LIBs), their poor cycling stability and huge volume expansion largely limit their extensive application in practical electrode materials. Herein, we report a facile strategy to synthesize hollow NiCo2O4 nanowires through direct calcination of binary metal-organic frameworks (MOFs) in air. When evaluated as an anode material for LIBs, NiCo2O4 nanowires deliver a reversible capacity of 1310 mA h g(-1) at a current density of 100 mA g(-1) after 100 cycles. Even at a high current density of 1 A g(-1), NiCo2O4 nanowires exhibit long-term cycling stability with a capacity of 720 mA h g(-1) after 1000 cycles. The outstanding lithium-storage performance can be attributed to the unique structures with 1D porous channels, which are beneficial for the fast transfer of Li+ ions and electrolyte and alleviate the strain caused by the volume expansion during cycling processes.
机译：虽然具有高理论特异性能力和功率密度的二元金属氧化物被广泛研究作为锂离子电池（LIBS）的承诺阳极材料，但它们循环稳定性差和巨大的体积膨胀很大程度上限制了它们在实际电极材料中的广泛应用。此，我们报告一个浅显的战略，通过在空气中二元金属 - 有机骨架（MOF）的直接煅烧合成中空NiCo2O4纳米线。当评估为LIBS的阳极材料时，NicO2O4纳米线在100次循环之后以100mA G（-1）的电流密度以100mA m Hg（-1）的可逆容量。即使在1Ag（-1）的高电流密度下，NicO2O4纳米线也表现出在1000次循环后的720mA H（-1）容量的长期循环稳定性。出色的锂储存性能可以归因于具有1D多孔通道的独特结构，这有利于Li +离子和电解质的快速转移，并减轻循环过程中的体积膨胀引起的应变。

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    Chu Kainian; Li Zhiqiang; Xu Shikai; Yao Ge; Xu Yang; Niu Ping; Zheng Fangcai;

  • 作者单位

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

    Anhui Univ Minist Educ Key Lab Struct &

    Funct Regulat Hybrid Mat Hefei 230601 Anhui Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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