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Evaluation of synthesis routes for pure and composite LiMnPO4 with carbonaceous additives for Li-ion battery

机译：含锂离子电池含碳添加剂的纯LiMnPO4和复合LiMnPO4的合成路线评估

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摘要

Olivine type materials with their high redox potential and reversible insertion-extraction of Li-ions are considered as attractive, low cost, and safe materials for the next generation Li-ion batteries (1,2). Especially, LiMnP0_4 showing high redox potential (4.2 V) is in the focus of research as a potential cathode material which could operate at high charge and discharge rates needed for hybrid and plug-in electric vehicles (3-5). However, its practical application is strongly inhibited by its low electrical conductivity and by kinetic limits of Li ion diffusion. In order to overcome these intrinsic obstacles, particle size is decreased mechanically by the ball milling with conductive carbon (6). This treatment reduces both the ionic and electronic path improving also the electronic conductivity by surface carbon coating layers. However, sufficient electronic and ionic transport requires high carbon loading, typically in the range of 20-40 wt.% of the electrode composite (3,5).
机译：具有高氧化还原电位和可逆锂离子插入-抽出的橄榄石型材料被认为是下一代锂离子电池有吸引力，低成本和安全的材料（1,2）。尤其是，显示高氧化还原电势（4.2 V）的LiMnPO_4作为一种潜在的阴极材料，可以在混合动力和插电式电动汽车（3-5）所需的高充电和放电速率下工作。然而，其低电导率和锂离子扩散的动力学极限强烈地限制了其实际应用。为了克服这些固有的障碍，通过用导电碳（6）进行球磨机械地减小了粒径。这种处理减少了离子路径和电子路径，并通过表面碳涂层改善了电子传导性。然而，足够的电子和离子迁移需要高碳负载，通常在电极复合材料（3,5）的20-40重量％的范围内。

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  • 来源
    《Rechargeable lithium-ion batteries》|2009年|p.187-197|共11页
  • 会议地点 Vienna(AT);Vienna(AT)
  • 作者

    S. Kaymaksiz; N. Kaskhedikar; N. Sato; S. Roth; U. Dettlaff-Weglikowska;

  • 作者单位

    Max-Planck-Institute for Solid State Research, 70569 Stuttgart, Germany;

    Max-Planck-Institute for Solid State Research, 70569 Stuttgart, Germany;

    Toyota Motor Europe, 1930 Zaventem, Belgium;

    Max-Planck-Institute for Solid State Research, 70569 Stuttgart, Germany Sineurop Nanotech GmbH, 70569 Stuttgart, Germany;

    Sineurop Nanotech GmbH, 70569 Stuttgart, Germany School of Electrical Engineering, Korea University, 136-713 Seoul, Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学电源、电池、燃料电池;
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