ホットプレスを施した75Li_2S・5P_2S_3・20P_2S_5(mol%)ガラスのリチウムイオン伝導特性 Lithium-lon Conducting Properties of a Hot-pressed 75Li_2S・5P_2S_3・20P_2S_5 (mol%) Glass

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A cold-pressed pellet of ion-conducting glassy powders generally shows lower conductivity than a monolithic bulk glass with the same chemical composition. This degradation of ion conductivity of the cold-pressed pellet would be caused by interfacial resistances between glassy particles. In order to improve the conductivity of glassy pellet, we tried a hot-press method for the glassy powder in the chemical composition 75Li<SUB>2</SUB>S·5P<SUB>2</SUB>S<SUB>3</SUB>·20P<SUB>2</SUB>S<SUB>5</SUB> (mol%) at around its glass-transition temperature. The hot-pressed pellet under the conditions: pressure 200 MPa, heating temperature 483 K, heating rate 5 Kmin<SUP>-1</SUP> and heating time 1 h, showed high ion conductivity at 298 K, σ<SUB>298K</SUB>=1.5×10<SUP>-3</SUP> Scm<SUP>-1</SUP>, and the activation energy <I>E</I><SUB>a</SUB>= 33 kJmol<SUP>-1</SUP>. Those ion conducting properties of the hot-pressed pellet were superior to those of a pellet cold-pressed at 200 MPa (σ<SUB>298K</SUB>= 6.1×10<SUP>-4</SUP> Scm<SUP>-1</SUP>, <I>E</I><SUB>a</SUB>= 38 kJmol<SUP>-1</SUP>).

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 59(1), 8-13, 2012-01-15

    一般社団法人 粉体粉末冶金協会

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各種コード

  • NII論文ID(NAID)
    10030479686
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    023492426
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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