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首页> 外文会议>International Advanced Automotive Battery Conference(AABC) and Ultracapacitor Conference; 20070515-18; Long Beach,CA(US) >Fundamental Properties of LiFePO_4 for Battery Applications
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Fundamental Properties of LiFePO_4 for Battery Applications

机译：LiFePO_4在电池应用中的基本特性

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摘要

LiFePO_4 has received much attention as a next-generation cathode material for lithium ion batteries. One issue that has to be overcome for practical applications is the small Li diffusivity of the active material. For that purpose, researchers have reduced particle size to decrease the diffusion length [1,2]. They are also working on improving the intrinsic properties of the material by methods such as doping or surface coating [3,4]. But to effectively assess these modifications, an easy method for determining Li diffusivity is needed. We have demonstrated in this study that the apparent diffusivity and electrode resistance of LiFePO_4 can be obtained from a detailed analysis of the cyclic voltammetry (CV) profiles.
机译：LiFePO_4作为锂离子电池的下一代正极材料备受关注。实际应用中必须克服的一个问题是活性材料的Li扩散系数小。为此，研究人员减小了粒径以减小扩散长度[1,2]。他们还致力于通过掺杂或表面涂层等方法来改善材料的固有特性[3,4]。但是，要有效地评估这些修改，需要一种简便的方法来确定Li扩散系数。在这项研究中，我们已经证明，可以通过对循环伏安（CV）曲线进行详细分析来获得LiFePO_4的表观扩散率和电极电阻。

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