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    • 44. 发明专利
    • Lithium secondary battery using ion-irradiated carbon material and manufacturing method thereof
    • 锂离子二次电池使用离子碳材料及其制造方法
    • JP2005251610A
    • 2005-09-15
    • JP2004061897
    • 2004-03-05
    • Hitachi Ltd株式会社日立製作所
    • HASHIZUME TOMIHIROICHIMURA MASAHIKOKASAI MASAHIROHATAKEYAMA RIKIZOKAWAZOE YOSHIYUKI
    • H01M10/05B05D5/12C01B31/30H01M4/1393H01M4/36H01M4/587H01M4/58H01M4/02H01M4/04H01M10/40
    • H01M4/587H01M4/1393
    • PROBLEM TO BE SOLVED: To reduce irreversible capacity in a lithium secondary battery in which amorphous carbon is used as a negative electrode active material and a lithium transition metal compound is used as a positive electrode active material.
      SOLUTION: A carbon material used as the negative electrode active material is irradiated with lithium ions to thereby dope the negative electrode with the lithium ions in a quantity equivalent to the irreversible capacity to make up the lithium secondary battery. The lithium ion irradiation is performed after applying a negative electrode mixture slurry of the carbon material to a negative electrode collector, drying, and compression-molding. Alternatively, a carbon material containing lithium ions is obtained in advance by performing lithium ion irradiation during the process of making the carbon material. By mixing this carbon material with another carbon material containing no lithium ions, it is possible to obtain a negative electrode containing lithium ions in a quantity equivalent to the irreversible capacity only.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 解决的问题:为了降低使用无定形碳作为负极活性物质的锂二次电池和锂过渡金属化合物作为正极活性物质的不可逆容量。 解决方案:将用作负极活性物质的碳材料用锂离子照射,从而将负极与锂离子掺杂,其量等于不可逆容量以构成锂二次电池。 在将碳材料的负极混合浆料涂布在负极集电体上之后进行锂离子照射,干燥,压缩成型。 或者,通过在制造碳材料的过程中进行锂离子照射,预先获得含有锂离子的碳材料。 通过将该碳材料与不含锂离子的另一种碳材料混合,可以获得仅含有相当于不可逆容量的锂离子的负极。 版权所有(C)2005,JPO&NCIPI
    • 49. 发明专利
    • SEMICONDUCTOR ELEMENT AND ITS INTEGRATED CIRCUIT
    • JPH07221356A
    • 1995-08-18
    • JP1026894
    • 1994-02-01
    • HITACHI LTD
    • ITO YOKOKASAI MASAHIROSATO TAKESHIKOZONO YUZO
    • H01L39/22H01L21/3205H01L23/52H01L39/02
    • PURPOSE:To mount a conductive oxide element and an oxide superconductor on the substrate of a semiconductor element by forming an alloy layer containing at least one of the elements constituting the substrate on the substrate and a.thin film layer composed of a conductive oxide on the alloy layer. CONSTITUTION:After forming an alloy layer 3 containing at least one of the elements constituting a substrate 4 on the substrate 4, a thin film layer 1 composed of a conductive oxide is formed on the layer 3. In addition, a metallic layer 2 composed of at least one of the metallic elements contained in the layer 3 other than the elements constituting the substrate 4 is formed between the alloy layer 3 and thin film layer l. The substrate 4 is formed of a semiconductor and the thin film layer 1 having a superconducting characteristic is formed of a superconductive oxide, and then, the metallic layer 2 and alloy layer 3 are composed of metallic elements having lattice constants which fall within a range of + or -10% front the lattice constants of the elements constituting the substrate 4 and superconductor. It is preferable to use a material which is hardly corroded physically and chemically as compared with the metallic layer 2.