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首页> 外文期刊>Japanese journal of applied physics >Microstructural Effect of Carbon Blacks for the Application in Lithium Ion Batteries
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Microstructural Effect of Carbon Blacks for the Application in Lithium Ion Batteries

机译：炭黑在锂离子电池中的应用的微观结构效应

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摘要

Carbon blacks commercially available (Super P, SP and Ketjen black, KB) and synthesized by a liquid phase plasma process (SC) were compared for the lithium ion battery applications as an anode material. All the carbon black samples were spherical with sizes in the range of 30-50 nm. The Brunauer-Emett-Teller (BET) specific surface areas of the SP, KB, and SC samples were measured to be 62, 1452, and 895m~2/g, respectively. The overall fraction of the ordered structure, represented by the ratio of the G-band to the D-band (G/D raio) from Raman spectra, was highest for the SC sample. A large specific surface area of the samples was found to play an important role in storing lithium ions, contributing to high initial charge capacities, 2050 mAh/g for KB and 1542 mAh/g for SC. The initial charge-discharge coulombic efficiency of the samples was strongly influenced by the solid electrolyte interface (SEI) formation behavior. The behavior of SEI formation seemed to be affected by the microstructural characteristics of the carbon blacks such as crystallinity and G/D ratio. The SC sample having a high G/D ratio and a slight variation without a peak of dQ/dV with potential showed a small initial capacity irreversibility.
机译：比较了市售的炭黑（Super P，SP和Ketjen black，KB）并通过液相等离子体工艺（SC）合成的炭黑作为负极材料在锂离子电池中的应用。所有炭黑样品均为球形，尺寸范围为30-50 nm。 SP，KB和SC样品的Brunauer-Emett-Teller（BET）比表面积分别为62、1452和895m〜2 / g。有序结构的总分数由拉曼光谱的G波段与D波段之比（G / D raio）表示，对于SC样品最高。发现样品的大比表面积在存储锂离子中起重要作用，有助于高的初始充电容量，KB为2050 mAh / g，SC为1542 mAh / g。样品的初始充放电库伦效率受到固体电解质界面（SEI）形成行为的强烈影响。 SEI形成的行为似乎受炭黑的微结构特征（如结晶度和G / D比）影响。具有高G / D比和稍有变化但没有dQ / dV峰值且带电势的SC样品显示出较小的初始容量不可逆性。

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  • 来源
    《Japanese journal of applied physics》 |2013年第11issue2期|11NM01.1-11NM01.4|共4页
  • 作者

    Kang-Seop Yun; Bo-Ra Kim; Eul Noh; Hee-June Jung; Hyo-Jin Oh; Woo-Seung Kang; Sang-Chul Jung; Seung-Taek Myung; Sun-Jae Kim;

  • 作者单位

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Department of Metallurgical and Materials Engineering, Inha Technical College, Incheon 402-751, Korea;

    Department of Metallurgical and Materials Engineering, Inha Technical College, Incheon 402-751, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

    Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea;

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