Spinel oxide anode materials are hardly used for commercial lithium-ion batteries because of their evident volume expansion in the discharging process and poor electronic conduction. Preparing a composite material of nanostructured spinel bimetallic oxides and carbon will solve the above problems and achieve outstanding electrochemical performance. In this study, an ultrafast approach (only 10 min) to synthesize spinel AMnO (A= Co, Mn, Zn) nanopolyhedras and their composites with GO was successfully developed. Integrating spinel CoMnO nanopolyhedras with GO can profoundly inhibit the problem of volume expansion but also eminently upgrading conductivity. The CoMnO/GO composite anode displays competent cyclic life and rate capability for lithium ion battery, delivering a large capacity of 738 mAh g after 340 cycles at 2 A g. The ultrafast approach and alluring electrochemical performance of this work will inevitably give impetus to the fast development and application of spinel oxides.

中文翻译：

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超快合成尖晶石AMn2O4（A=Co、Mn、Zn）纳米多面体及其复合材料应用于锂离子电池负极

尖晶石氧化物负极材料由于在放电过程中体积膨胀明显且电子传导性差，很难用于商业化锂离子电池。制备纳米结构尖晶石双金属氧化物与碳的复合材料将解决上述问题并实现优异的电化学性能。在这项研究中，成功​​开发了一种超快方法（仅 10 分钟）合成尖晶石 AMnO（A= Co、Mn、Zn）纳米多面体及其与 GO 的复合材料。将尖晶石 CoMnO 纳米多面体与 GO 结合可以深刻抑制体积膨胀问题，同时也显着提高电导率。 CoMnO/GO复合负极显示出锂离子电池良好的循环寿命和倍率能力，在2 A g-1下循环340次后可提供738 mAh g-1的大容量。这项工作的超快方法和诱人的电化学性能将不可避免地推动尖晶石氧化物的快速发展和应用。