Lithium Intercalation/Deintercalation of the Bi-2212 Phase by Electrochemical Method.

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  • Nakanishi Makoto
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Uwazumi Yoshiaki
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Fujiwara Masashi
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Takada Jun
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Kusano Yoshihiro
    Department of Applied Art, College of the Arts, Kurashiki University of Science and the Arts
  • Takeda Yasuo
    Department of Chemistry, Faculty of Engineering, Mie University
  • Ikeda Yasunori
    Institute for Chemical Reseach, Kyoto University

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Other Title
  • 電極反応によるＢｉ‐２２１２相へのＬｉのインターカレーション／ディインターカレーション
  • デンキョク ハンノウ ニヨル Bi 221 2ソウ エ ノ Li ノ インター

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Abstract

The effects of electrochemical removal reaction of lithium from the Li-doped Bi-2212 phase on its structure and superconducting properties have been studied. Lithium was inserted into and removed from Bi2Sr1.5Ca1.5Cu2Oz through an electrochemical. method at a constant applied potential at room temperature. The original crystal symmetry, tetragonal structure, was maintained and any secondary phase was not formed throughout the electrochemical reactions. Lattice parameter c of the doped samples, LixBi2Sr1.5Ca1.5Cu2Oz, decreased and Tc changed reversibly as the lithium content x decreased, It reveals that the electrochemical reactions were intercalation/deintercalation of the Bi-2212 phase with lithium.

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