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首页> 外文期刊>Journal of power sources >Development of all-solid-state lithium battery using quasi-solidified tetraglyme-lithiumbis(trifluoromethanesulfonyl)amide-fumed silica nano-composites as electrolytes
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Development of all-solid-state lithium battery using quasi-solidified tetraglyme-lithiumbis(trifluoromethanesulfonyl)amide-fumed silica nano-composites as electrolytes

机译：准固化四甘醇二甲醚-锂双（三氟甲磺酰基）酰胺气相法二氧化硅纳米复合材料为电解质的全固态锂电池的研制

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摘要

A quasi-solid-state electrolyte consisting of tetraethylene glycol dimethyl ether (tetraglyme, G_4)/lith-ium bis(trifluoromethanesulfonyl)amide (LiTFSA) mixtures together with fumed silica nanoparticles was prepared for use as the electrolyte of an all-solid-state lithium rechargeable battery. Via the liquid route, we have succeeded in fabricating a quasi-solid-state electrolyte regardless of the high concentration of G_4/Li-TFSA such as 75 vol%. It was found that the conductivities, the self-diffusion coefficients and the structure of the G_4/Li-TFSA complex in the quasi-solid-state composite are essentially similar to those of the bulks regardless of the solid-like appearance. Compared to the quasi-solid-state electrolytes containing the conventional room temperature ionic liquids (RTILs), the ones containing the equimolar G_4/LiTFSA complex exhibited a higher stability to the lithium electrodes. The all-solid-state lithium rechargeable battery was assembled using LiCoO_2 and lithium metal as the cathode active material and anode, respectively. The all-solid-state cells showed noticeable charge-discharge and cycle performances. In the cut-off voltage range of 4.3-3.4 V, it achieved high initial discharge capacities of 130, 110 and 90 mAh g~(-1) at 0.05, 0.1 and 0.2 C, respectively. Even after one hundred charge-discharge cycles, the discharge capacities remained high at 105, 100 and 95 mAh g~(-1) respectively.
机译：制备了由四甘醇二甲醚（四甘醇二甲醚，G_4）/锂双（三氟甲磺酰基）酰胺（LiTFSA）混合物与气相法二氧化硅纳米粒子组成的准固态电解质，用作全固态电解质锂可充电电池。通过液态途径，我们已经成功地制备了准固态电解质，而与高浓度的G_4 / Li-TFSA（例如75 vol％）无关。发现准固态复合物中G_4 / Li-TFSA络合物的电导率，自扩散系数和结构与固体的性质基本相似，而与固体外观无关。与包含常规室温离子液体（RTIL）的准固态电解质相比，包含等摩尔G_4 / LiTFSA配合物的准固态电解质对锂电极表现出更高的稳定性。使用LiCoO_2和锂金属分别作为正极活性物质和负极组装全固态锂可充电电池。全固态电池显示出明显的充放电和循环性能。在4.3-3.4 V的截止电压范围内，在0.05、0.1和0.2 C时，其初始放电容量分别为130、110和90 mAh g〜（-1）。即使经过一百次充放电循环，放电容量仍然分别保持在105、100和95 mAh g〜（-1）。

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  • 来源
    《Journal of power sources》 |2013年第15期|354-362|共9页
  • 作者

    Atsushi Unemoto; Takahiro Matsuo; Hideyuki Ogawa; Yoshiyuki Gambe; Itaru Honma;

  • 作者单位

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, 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

    Quasi-solid-state electrolyte; All-solid-state lithium battery; Glyme-Li-salt equimolar complex; Transport; Anodic stability;

    机译：准固态电解质;全固态锂电池;甘氨酸-锂-盐等摩尔复合物;运输;阳极稳定性;

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