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One-Step Pyro-Synthesis of a Nanostructured Mn3O4/C Electrode with Long Cycle Stability for Rechargeable Lithium-Ion Batteries

机译:具有长循环稳定性的可充电锂离子电池纳米结构Mn3O4 / C电极的一步热解合成

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A nanostructured Mn3O4/C electrode was prepared by a one-step polyol-assisted pyro-synthesis without any post-heat treatments. The as-prepared Mn3O4/C revealed nanostructured morphology comprised of secondary aggregates formed from carbon-coated primary particles of average diameters ranging between 20 and 40nm, as evidenced from the electron microscopy studies. The N-2 adsorption studies reveal a hierarchical porous feature in the nanostructured electrode. The nanostructured morphology appears to be related to the present rapid combustion strategy. The nanostructured porous Mn3O4/C electrode demonstrated impressive electrode properties with reversible capacities of 666mAhg(-1) at a current density of 33mAg(-1), good capacity retentions (1141mAhg(-1) with 100% Coulombic efficiencies at the 100(th) cycle), and rate capabilities (307 and 202mAhg(-1) at 528 and 1056mAg(-1), respectively) when tested as an anode for lithium-ion battery applications.
机译:纳米结构的Mn3O4 / C电极是通过一步多元醇辅助热解制备的,无需任何后处理。制备的Mn3O4 / C揭示了纳米结构的形态,该形态由二次聚集体组成,二次聚集体由平均直径为20至40nm的碳包覆的一次颗粒形成,这从电子显微镜研究中得到了证明。 N-2吸附研究揭示了纳米结构电极中的分层多孔特征。纳米结构形态似乎与当前的快速燃烧策略有关。纳米结构的Mn3O4 / C多孔电极表现出令人印象深刻的电极性能,在电流密度为33mAg(-1)时可逆容量为666mAhg(-1),具有良好的容量保持率(1141mAhg(-1),在100(th)时库仑效率为100% )周期)和速率能力(分别在528和1056mAg(-1)时分别为307和202mAhg(-1))作为锂离子电池应用的阳极进行测试。

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