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Pore-graded and conductor- and binder-free FeS_2 films deposited by spray pyrolysis for high-performance lithium-ion batteries

机译:通过喷雾热解沉积的孔径和无铅FES_2薄膜,用于高性能锂离子电池

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摘要

Porosity-graded, conductor-and binder-free porous FeS2 films through the entire thickness were deposited by spray pyrolysis. The film layers deposited at 15 versus 10 L/min are grown in different modes. The film layer deposited at 15 L/min showed Frank-van der Merwe layer-like growth mode whereas the one deposited at 10 L/min showed island growth mode. These growth modes lead to the formation of large pores on the electrolyte side and small ones on the substrate side of the film deposited using 15 and 10 L/min, sequentially. The porosity-graded films showed discharge capacities at C/10 of 879 mA h/g and 754 mA h/g for the 5th and 20th cycles, respectively. Such capacity values are superior to the literature findings for FeS2 powders and nongraded films mixed with conductor and binder additions.
机译:通过喷雾热解沉积通过整个厚度的孔隙率分级,导体和无粘合剂多孔FES2膜。沉积在15与10L / min的膜层以不同的方式生长。沉积在15L / min的薄膜层显示出弗兰克范德尔梅利层状生长模式,而在10L / min的沉积物中沉积在岛生长模式。这些生长模式导致在电解质侧的大孔和依次使用15和10L / min的薄膜的基板侧的小孔形成。孔隙率梯度薄膜分别在879mA h / g的C / 10和第5次和第20次循环中显示出放电容量。这种能力值优于FES2粉末和与导体和粘合剂添加混合的非转移薄膜的文献结果。

著录项

  • 来源
    《Journal of Materials Research》 |2019年第14期|2456-2471|共16页
  • 作者单位

    Al Balqa Appl Univ Dept Mat Engn Al Salt 19117 Jordan|Univ Utah Dept Mat Sci & Engn Salt Lake City UT 84112 USA;

    Univ Utah Dept Mat Sci & Engn Salt Lake City UT 84112 USA;

  • 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

    energy storage; thin film; porosity;

    机译:储能;薄膜;孔隙度;

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