• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Novel design of Fe3O4/hollow graphene spheres composite for high performance lithium-ion battery anodes
【24h】

Novel design of Fe3O4/hollow graphene spheres composite for high performance lithium-ion battery anodes

机译：Fe3O4 /空石墨烯球体复合材料的新型设计，高性能锂离子电池阳极

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

On account of its high theoretical capacity and low cost, Fe3O4 is regarded as a promising anode material for lithium-ion batteries. Nevertheless, many problems such as poor conductivity and volume expansion during lithiation severely limit its practical application. In this work, we synthesized hollow graphene spheres (HGSs) by self-assembly and innovatively combined it with Fe3O4 particles to obtain a composite material. The Fe3O4/HGSs composite exhibits excellent electrochemical performances as an anode material, which behaves an initial discharge specific capacity of 1670.8 mA h g(-1) at 50 mA g(-1) and 1048.5 mA h g(-1) after 50 cycles. Especially, the specific capacity can maintain as high as 617.1 mA h g(-1) at the current density of 1000 mA g(-1), which is much higher than that of commercial graphite. While largely inhibiting agglomeration between the particles of Fe3O4 particles, hollow spheres composed of conductive and flexible graphene layers also provide an interconnected conductive network. We believe that this design in structure will also provide a new perspective for the researches of other transition metal oxides for lithium-ion batteries. (C) 2018 Elsevier B.V. All rights reserved.
机译：由于其高理论能力和低成本，Fe3O4被认为是锂离子电池的有希望的阳极材料。然而，许多问题在锂尼亚中的电导率和体积扩张差异严重限制了其实际应用。在这项工作中，我们通过自组装合成空心石墨烯球（HGS），并用Fe3O4颗粒创新地将其与其获得以获得复合材料。 Fe3O4 / Hgss复合材料表现出优异的电化学性能作为阳极材料，其在50 mA g（-1）和1048.5 mA H（-1）之后在50 mA g（-1）的初始放电比容量在50 mA g（-1）之后在50次循环后。特别地，特定容量可以保持在1000mA G（-1）的电流密度的高达617.1mA H（-1），其远高于商业石墨的电流。虽然在很大程度上抑制Fe3O4颗粒的颗粒之间的聚集，但是由导电和柔性石墨烯层组成的中空球也提供互连的导电网络。我们认为，这种结构的设计还将为锂离子电池的其他过渡金属氧化物的研究提供一种新的视角。 （c）2018年elestvier b.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号