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Porous Co3O4 Nanosheets with Extraordinarily High Discharge Capacity for Lithium Batteries

机译:锂电池放电容量极高的多孔Co3O4纳米片

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In this work, we report the simple solid-state formation of porous Co3O4 with a hexagonal sheetlike structure. The synthesis is based oil controlled thermal oxidative decomposition and recrystallization of precursor Co(OH)(2) hexagonal nanosheets. After thermal treatment, the hexagonal sheetlike morphology can be completely preserved, despite the fact that there is a volume contraction accompanying the process: Co(OH)(2)-> Co3O4. Because of the intrinsic crystal contraction, a highly porous structure of the product is simultaneously created. Importantly, when evaluated as electrode materials for lithium-ion batteries, the as-prepared Porous Co3O4 nanosheets exhibit superior Li-battery performance with good cycle life and high capacity (1450 mAh g(-1)) due to their porous sheetlike structure and small size. As far its we know, the performance of the Co3O4-based anode materials for lithium batteries presented here is the best up to now. Considering the improved performance and cost-effective synthesis. the as-prepared porous Co3O4 nanosheets might be suitable its anode electrodes for next-generation lithium-ion batteries.
机译:在这项工作中,我们报告了具有六边形片状结构的多孔Co3O4的简单固态形成。合成是基于前驱体Co(OH)(2)六角形纳米片的油控热氧化分解和重结晶。热处理后,尽管伴随以下过程而发生体积收缩:Co(OH)(2)-> Co3O4,但六边形的片状形态仍可以完全保留。由于固有的晶体收缩,同时产生了产品的高度多孔结构。重要的是,当评估为锂离子电池的电极材料时,所制备的多孔Co3O4纳米片由于具有多孔片状结构且体积小,因此具有优异的锂电池性能,良好的循环寿命和高容量(1450 mAh g(-1))。尺寸。据我们所知,此处介绍的基于Co3O4的锂电池负极材料的性能是迄今为止最好的。考虑改进的性能和具有成本效益的综合。制备的多孔Co3O4纳米片可能适合其阳极电极用于下一代锂离子电池。

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