乾式造粒法による等方性結晶を持つ球形黒鉛材料の合成  [in Japanese] Synthesis of Spherical Graphitized Carbon Powder with Homolytic Crystals by a Dry Granulation Process  [in Japanese]

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Abstract

太陽光発電用シリコンウエハーの製造に用いるるつぼ材などの特殊炭素材料やリチウム電池用の負極材料など,さまざまな分野で使用されている炭素材料は,強度や導電性が優れており,2,000°Cを超える非酸化性雰囲気での強度部材として,唯一選択しうる材料である.また,特殊炭素材料の分野では,成形体にしたときの各特性の方向依存がない,等方性の特徴を持つ炭素材が求められている.本研究では,石油系の生コークス原料に着目し,乾式造粒技術を用いることで炭素材料の球形化について検討した.その結果,高温での黒鉛化処理を行っても球形粒子形状を維持し,等方性結晶の特性を持つ球形黒鉛粉末が得られた.

Carbon materials are used in various fields, such as the anode material for lithium ion batteries and specialty carbon for the crucibles of silicon wafer production, because of their superior strength and conductivity. They are the only materials that can be used in non-oxidizing atmospheres at temperatures above 2,000°C, and carbon materials with homolytic properties are in demand in many fields. In this study, sphericalization of carbon materials was examined by using a dry granulation of oil-based raw cokes in three types of powder-processing apparatus. SEM and TEM observations revealed that the spherical form was maintained after graphitization at high temperature, and spherical graphitized carbon powder with homolytic crystals was produced.

Journal

  • KAGAKU KOGAKU RONBUNSHU

    KAGAKU KOGAKU RONBUNSHU 40(3), 234-239, 2014

    The Society of Chemical Engineers, Japan

Codes

  • NII Article ID (NAID)
    130004855790
  • NII NACSIS-CAT ID (NCID)
    AN00037234
  • Text Lang
    JPN
  • ISSN
    0386-216X
  • NDL Article ID
    025740231
  • NDL Call No.
    Z17-725
  • Data Source
    NDL  J-STAGE 
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