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首页> 外文期刊>Journal of power sources >Structure and properties of the Na_2S-P_2S_5 glasses and glass-ceramics prepared by mechanical milling
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Structure and properties of the Na_2S-P_2S_5 glasses and glass-ceramics prepared by mechanical milling

机译：机械研磨制备的Na_2S-P_2S_5玻璃及玻璃陶瓷的结构与性能

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摘要

The xNa_2S·(100 - x)P_2S_5 (mol%; x = 67, 70, 75 and 80) glasses were prepared by mechanochemical processing. Composition dependence of local structure, thermal behavior and electrical conductivity of the prepared glasses were examined. NMR and Raman spectroscopic studies revealed that the xNa_2S•(100-x) P_2S_5 glasses were composed of the thiophosphate units corresponding to their nominal compositions. The room temperature conductivities of the glasses increased with an increase in the Na_2S content and attained a maximum at the x = 80 composition; the highest conductivity is 1 × 10~(-5) S cm~(-1). The xNa_2S · (100 - x)P_2S_5 glass-ceramics were obtained by heating the glasses beyond their crystallization temperatures. The relationship between conductivity and crystalline phase was studied for the glass-ceramics. The glass -ceramics at the compositions of x = 70 and 75 exhibited higher conductivities than those of corresponding glasses due to the precipitation of the superionic cubic Na_3PS_4 crystal. In particular, the x = 75 glass-ceramic showed the highest conductivity of 2 × 10~(4) S cm~(-1) at 25 ℃ and the lowest activation energy of 27 kJ mol~(-1). In addition, the x = 75 glass-ceramic was electrochemically stable against sodium deposition and dissolution. The 75Na_2S·25P_2S_5 glass-ceramic electrolyte with high conductivity and high electrochemical stability is suitable for all-solid-state sodium rechargeable batteries.
机译：通过机械化学处理制备了xNa_2S·（100-x）P_2S_5（摩尔％； x ＝ 67、70、75和80）玻璃。检查了所制备玻璃的局部结构，热行为和电导率的成分依赖性。 NMR和拉曼光谱研究表明，xNa_2S•（100-x）P_2S_5玻璃由对应于其标称组成的硫代磷酸盐单元组成。玻璃的室温电导率随Na_2S含量的增加而增加，并在x = 80的组成下达到最大值。最高电导率为1×10〜（-5）S cm〜（-1）。通过将玻璃加热至超过其结晶温度来获得xNa_2S·（100-x）P_2S_5玻璃陶瓷。研究了玻璃陶瓷的电导率和晶相之间的关系。由于超离子立方Na_3PS_4晶体的沉淀，在x ＝ 70和75的组成下的玻璃陶瓷表现出比相应的玻璃更高的电导率。特别是x = 75的微晶玻璃在25℃时电导率最高，为2×10〜（4）S cm〜（-1），最低活化能为27kJ mol〜（-1）。另外，x ＝ 75的玻璃陶瓷对钠的沉积和溶解是电化学稳定的。具有高电导率和高电化学稳定性的75Na_2S·25P_2S_5玻璃陶瓷电解质适用于全固态钠可充电电池。

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  • 来源
    《Journal of power sources》 |2014年第10期|260-265|共6页
  • 作者

    Kousuke Noi; Akitoshi Hayashi; Masahiro Tatsumisago;

  • 作者单位

    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuencho, Naka-ku, Sakai, Osaka 599-8531, Japan;

    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuencho, Naka-ku, Sakai, Osaka 599-8531, Japan;

    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuencho, Naka-ku, Sakai, Osaka 599-8531, Japan;

  • 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

    Solid electrolyte Sulfide; Glass-ceramic; Sodium ion conductor; All-solid-state battery;

    机译：固体电解质硫化物;玻璃陶瓷;钠离子导体;全固态电池;

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