Structural Change of Li_<1-x>Ni_<0.5>Mn_<0.5>O_2 Cathode Materials for Lithium-ion Batteries by Synchrotron Radiation

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Synchrotron X-ray diffraction and XAFS measurement have been employed to investigate structural change and the charging process of a layered LiNi<SUB>0.5</SUB>Mn<SUB>0.5</SUB>O<SUB>2</SUB> cathode material. The structure of charged Li<SUB>1−<I>x</I></SUB>Ni<SUB>0.5</SUB>Mn<SUB>0.5</SUB>O<SUB>2</SUB> (<I>x</I>=0.5), which corresponds to the composition for showing rechargeable capacity, was determined. The results showed that divalent nickel metal was oxidized to trivalent after charging, in association with the phase transition from hexagonal (<I>R</I>3-<I>m</I>) to monoclinic (<I>C</I>2/<I>m</I>) resulting from the ordering of cations in the layered structure.

収録刊行物

  • Chemistry letters

    Chemistry letters 32(1), 60-61, 2003-01-05

    The Chemical Society of Japan

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被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10012813204
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    03667022
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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