能源化学(英文版) ›› 2019, Vol. 38 ›› Issue (11): 84-87.DOI: 10.1016/j.jechem.2019.01.009

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Lithium ion conductivity of complex hydrides incorporating multiple closo-type complex anions

Naoki Toyamaa, Sangryun Kima, Hiroyuki Oguchib, Toyoto Satoa, Shigeyuki Takagia, Masaru Tazawac, Genki Nogamic, Shin-ichi Orimoa,b   

  1. a Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan;
    b WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan;
    c Mitsubishi Gas Chemicals Co., Inc., 182 Tayuhama Shinwari, Kita-ku, Niigata 950-3112, Japan
  • 收稿日期:2018-10-31 修回日期:2018-12-21 出版日期:2019-11-15 发布日期:2020-12-18
  • 通讯作者: Sangryun Kim, sangryun@imr.tohoku.ac.jp; Shin-ichi Orimo, orimo@imr.tohoku.ac.jp
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (21872108, 21573167, 21633008 and 91545205), the National Key Research and Development Program (2016YFB0101203), the Fundamental Research Funds for the Central Universities (2014203020207).

Lithium ion conductivity of complex hydrides incorporating multiple closo-type complex anions

Naoki Toyamaa, Sangryun Kima, Hiroyuki Oguchib, Toyoto Satoa, Shigeyuki Takagia, Masaru Tazawac, Genki Nogamic, Shin-ichi Orimoa,b   

  1. a Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan;
    b WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan;
    c Mitsubishi Gas Chemicals Co., Inc., 182 Tayuhama Shinwari, Kita-ku, Niigata 950-3112, Japan
  • Received:2018-10-31 Revised:2018-12-21 Online:2019-11-15 Published:2020-12-18
  • Contact: Sangryun Kim, sangryun@imr.tohoku.ac.jp; Shin-ichi Orimo, orimo@imr.tohoku.ac.jp
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21872108, 21573167, 21633008 and 91545205), the National Key Research and Development Program (2016YFB0101203), the Fundamental Research Funds for the Central Universities (2014203020207).

摘要: We report the lithium ionic conductivities of closo-type complex hydrides synthesized from various molar ratios of lithium borohydride (LiBH4) and decaborane (B10H14) as starting materials. The prepared closo-type complex hydrides comprised[B12H12]2-,[B11H11]2-, and[B10H10]2- complex anions. In addition, increasing the LiBH4 content in the starting materials increased the amounts of[B11H11]2- and[B10H10]2-, leading to an improved ion conductivity of the prepared sample. The present study offers useful insights into strategies for controlling the complex anion composition in emerging solid electrolytes of closo-type complex hydrides at the molecular level, and improving their ionic conductivities.

关键词: Closo-type complex hydride, Solid electrolyte, Lithium ion conductivity, Multiple complex anions

Abstract: We report the lithium ionic conductivities of closo-type complex hydrides synthesized from various molar ratios of lithium borohydride (LiBH4) and decaborane (B10H14) as starting materials. The prepared closo-type complex hydrides comprised[B12H12]2-,[B11H11]2-, and[B10H10]2- complex anions. In addition, increasing the LiBH4 content in the starting materials increased the amounts of[B11H11]2- and[B10H10]2-, leading to an improved ion conductivity of the prepared sample. The present study offers useful insights into strategies for controlling the complex anion composition in emerging solid electrolytes of closo-type complex hydrides at the molecular level, and improving their ionic conductivities.

Key words: Closo-type complex hydride, Solid electrolyte, Lithium ion conductivity, Multiple complex anions