...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of materials science >Gamma-irradiation synthesis of Fe_3O_4/rGO nanocomposites as lithium-ion battery anodes
【24h】

Gamma-irradiation synthesis of Fe_3O_4/rGO nanocomposites as lithium-ion battery anodes

机译：Fe_3O_4 / RGO纳米复合材料作为锂离子电池阳极的γ-辐照合成

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

Fe_3O_4/reduced graphene oxide (Fe_3O_4/rGO) nanocomposites with different weight concentration of Fe_3O_4 have been synthesized by a gamma-irradiation method. The iron(Ⅲ) hydroxide and graphene oxide (GO) were reduced to Fe_3O_4 and rGO by the reducing species generated from the radiolysis of solvent. The Fe_3O_4 nanoparticles were anchored on the rGO nanosheets. The electrochemical performances of the obtained materials were evaluated in coin-type cells. As Li-ion rechargeable battery anodes, the discharge/charge cycling stability of Fe_3O_4/rGO composites is significantly improved in comparison with that of bare Fe_3O_4 nanoparticles. Among the studied composites, Fe_3O_4/rGO-2 (wt% of Fe_3O_4 ≈ 78.8%) shows the best cycling stability at a current density of 50 mA g~(-1). The discharge capacity of Fe_3O_4/rGO-2 remains 568.6 mAh g~(-1) after 100 cycles. However, Fe_3O_4/rGO-3 (wt% of Fe_3O_4 ≈ 74.7%) exhibits an excellent cycling stability at a higher current density (500 mA g~(-1)), that the sustained discharge capacity is 738.5 mAh g~(-1) after 100 cycles.
机译：通过γ-辐照法合成具有不同重量浓度Fe_3O_4的Fe_3O_4 / X型氧化石墨烯（Fe_3O_4 / Rgo）纳米复合材料。通过从溶剂的辐射溶解产生的还原物种，将铁（Ⅲ）氢氧化铁和石墨烯（GO）减少到Fe_3O_4和RGO。 Fe_3O_4纳米颗粒锚定在RGO纳米片上。在硬币型细胞中评价所得材料的电化学性能。与裸FE_3O_4纳米颗粒相比，作为锂离子可再充电电池阳极，Fe_3O_4 / Rgo复合材料的放电/电荷循环稳定性显着改善。在研究的复合材料中，Fe_3O_4 / RGO-2（Wt％Fe_3O_4≈78.8％）显示出在50mA G〜（-1）的电流密度下的最佳循环稳定性。在100次循环后，Fe_3O_4 / RGO-2的放电容量保持568.6mah g〜（-1）。然而，Fe_3O_4 / RGO-3（Wt％Fe_3O_4≈74.7％）在更高的电流密度（500mA g〜（-1））上表现出优异的循环稳定性，持续放电能力为738.5mah g〜（-1 ）100次循环后。

著录项

  • 来源
    《Journal of materials science》 |2020年第19期|17075-17083|共9页
  • 作者

    Ying Liang; Wangli Lu;

  • 作者单位

    Institute of Nuclear Technology and Application School of Science East China University of Science and Technology Shanghai 200237 PR China;

    Institute of Nuclear Technology and Application School of Science East China University of Science and Technology Shanghai 200237 PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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