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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Micro-nano NiO-MnCo2O4 heterostructure with optimal interfacial electronic environment for high performance and enhanced lithium storage kinetics
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Micro-nano NiO-MnCo2O4 heterostructure with optimal interfacial electronic environment for high performance and enhanced lithium storage kinetics

机译：微纳米NiO-MnCo2O4异质结构，具有高性能和增强锂储存动力学的最佳界面电子环境

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摘要

This manuscript provides an in situ synthesis method for the self-assembly of a heterostructured NiO-MnCo2O4 micro-nano composite with a poriferous shell. The special shell structure effectively alleviated the volume variation and subsequently enhanced the diffusivity of ions in the cycling process for cyclic stability. The inner spaces among the stacked nanoparticles are conducive to electrolyte infiltration and the transfer of ion/electrons with low concentration polarization. Consequently, the optimized NiO-MnCo2O4 exhibited excellent cycle stability (718.8 mA h g(-1) after 1000 cycles at 2 A g(-1)) and highly recoverable rate performance. On gaining insight into the heterointerface structure, it was indicated that the optimal interfacial electronic environment in the presence of the nickel content plays a key role in creating lattice defects and active sites to increase the ion diffusion rate, electron conductivity and unlock extra pseudocapacitance for ion storage. The excellent capabilities from the optimal heterointerface environment will promote the development of high-energy applications of LIBs.
机译：该原稿提供了一种原位合成方法，用于用散装壳自组装自组装。特殊壳结构有效地减轻了体积变化，随后增强了离子在循环稳定性的循环过程中的扩散性。堆叠的纳米颗粒中的内部空间有利于电解质渗透和具有低浓度极化的离子/电子的转移。因此，优化的NiO-MnCo2O4在2Ag（-1））和高度可收回的速率性能下在1000次循环后表现出优异的循环稳定性（718.8mA H（-1）。关于在洞察异位面结构的洞察中，表示存在在镍含量存在下的最佳界面电子环境在创造晶格缺陷和有源部位以增加离子扩散速率，电子电导率并解锁离子的额外假偶联的关键作用贮存。最佳的异常接近环境的优异能力将促进LIBS的高能量应用的发展。

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  • 作者

    Dang Wei; Tang Xincun; Wang Wei; Yang Yun; Li Xing; Huang Liuchun; Zhang Yi;

  • 作者单位

    Cent South Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Cent South Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Hunan Inst Sci &

    Technol Sch Chem &

    Chem Engn Key Lab Hunan Prov Adv Carbon Based Funct Mat Yueyang 414006 Peoples R China;

    Hubei Univ Coll Chem &

    Chem Engn Minist OF Educ Synth &

    Applicat Organ Funct Mol Key Lab Wuhan 430062 Peoples R China;

    Cent South Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Cent South Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Cent South Univ Coll Chem &

    Chem Engn Changsha 410083 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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