首页> 外文会议>Annual conference on applications of X-ray analysis >RIETVELD REFINEMENT OF LiCoO2-TYPE LAYERED STRUCTURES: SEMI-QUANTITATIVE ANALYSIS OF Li CONTENTS
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RIETVELD REFINEMENT OF LiCoO2-TYPE LAYERED STRUCTURES: SEMI-QUANTITATIVE ANALYSIS OF Li CONTENTS

机译:LietVeld精制LiCoO2型分层结构:LI内容的半定量分析

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Rietveld refinement of Li_xCoO_2-type cathodes has been demonstrated to yield semi-quantitative information about the Li occupancy with an error of about ~10%. With careful XRD data collection, refinement, and proper calibration, accurate values can be obtained. Rietveld refinement tends to under-predict the Li occupancy values in charged (de-lithiated) cathodes as compared to ICP measurements. A Li-gradient model that assumes a decreasing concentration of Li from the particle core to its surface is discussed to explain this observation.
机译:已经证明了LI_XCOO_2型阴极的RIETVELD细化,以产生关于LI占用的半量值信息,误差约为约10%。 通过仔细的XRD数据收集,细化和适当的校准,可以获得精确的值。 与ICP测量相比,RIETVELD改进倾向于预测带电(去锂化)阴极中的LI占用值。 讨论了假设从颗粒芯降低到其表面的Li浓度的Li-梯度模型以解释该观察。

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