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首页> 外文期刊>Applied Surface Science >Self-assembled NiCo2O4-anchored reduced graphene oxide nanoplates as high performance anode materials for lithium ion batteries
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Self-assembled NiCo2O4-anchored reduced graphene oxide nanoplates as high performance anode materials for lithium ion batteries

机译：自组装NiCo2O4固定的还原型氧化石墨烯纳米板作为锂离子电池的高性能阳极材料

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摘要

The NiCo2O4-anchored reduced graphene oxide (NiCo2O4@rGO) nanoplates have been synthesized by a facile self-assembly process. The morphology, crystalline structure and electrochemical performance of the materials have been investigated comprehensively. The results of SEM manifest that NiCo2O4 particles have been densely anchored on the surface of rGO with a mesoporous structure, and the morphology is tunable via altering concentration of urea during the preparation process. Due to the high ratio of NiCo2O4 in the composite and the plate structure, the electrochemical performance of as-prepared material has been greatly improved. When evaluated as anode materials in lithium ion batteries (LIBs), the as-prepared NiCo2O4@rGO nanocomposite delivers a reversible capacity of 994 mAh g(-1) at a current density of 200 mAg(-1) with outstanding rate capability, revealing that it could be a promising anode for LIBs. (C) 2017 Elsevier B.V. All rights reserved.
机译：NiCo2O4固定的还原氧化石墨烯（NiCo2O4 @ rGO）纳米板已通过一种简便的自组装方法合成。对材料的形貌，晶体结构和电化学性能进行了全面研究。扫描电镜结果表明，NiCo2O4颗粒已被紧密地锚固在具有介孔结构的rGO表面，并且在制备过程中通过改变尿素的浓度可调节其形貌。由于复合材料中NiCo2O4的高比例和板状结构，所制备材料的电化学性能得到了极大的改善。当被评估为锂离子电池（LIB）的负极材料时，所制备的NiCo2O4 @ rGO纳米复合材料在200 mAg（-1）的电流密度下可逆容量为994 mAh g（-1），具有出色的倍率性能，这表明它可能是LIB的有希望的阳极。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第31期|1055-1062|共8页
  • 作者

    Yang Juan; Tian Hangyu; Tang Jingjing; Bai Tao; Xi Lihua; Chen Sanmei; Zhou Xiangyang;

  • 作者单位

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Lithium ion battery; Anode material; Plate structure; Graphene;

    机译：锂离子电池;负极材料;板结构;石墨烯;

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