| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery capable of having high power by orienting a specific crystal face of a LiCoO<SB>2</SB>as a positive electrode active material to a substrate, and to provide a method of manufacturing the same. <P>SOLUTION: The lithium ion secondary battery includes a positive electrode made of a thin film of a LiCoO<SB>2</SB>single crystal epitaxially growing by vertically orienting a (003) face on the surface of a metal single crystal substrate. It is desirable that the metal single crystal substrate is made of Au or Pt, and the surface of the substrate is a (110) face of the Au or the Pt. A method of manufacturing a lithium ion secondary battery is characterized in that the positive electrode is formed with epitaxial growing by vertically orienting the (003) face of the LiCoO<SB>2</SB>on the surface of the metal single crystal substrate. It is desirable that the substrate made of the Au or the Pt, wherein the (110) face becomes the surface of a substrate as the metal single crystal substrate is used, and the epitaxial growing is carried out by a pulse laser deposition method. <P>COPYRIGHT: (C)2010,JPO&INPIT |
