Fading analyses of commercial lithium-ion batteries with blended cathodes using synchrotron X-ray diffraction measurement and discharge curve analysis
Fading analyses of commercial lithium-ion batteries with blended cathodes using synchrotron X-ray diffraction measurement and discharge curve analysis
复制标题
使用同步加速器 X 射线衍射测量和放电曲线分析对具有混合阴极的商用锂离子电池进行褪色分析
DOI:
10.1016/j.jpowsour.2023.232893
复制
发表时间:
2023
影响因子:
9.2
通讯作者:
Kobayashi Takeshi
中科院分区:
文献类型:
--
作者:
Betsuyaku Kiyoshi;Kobayashi Takeshi
We investigated the fading behavior of commercial lithium-ion batteries with blended cathodes. Synchrotron X-ray diffraction measurements revealed the constituent materials of the blended cathode and the degradation state of the cathode due to particle cracking. A particle model was newly introduced to the discharge curve analysis in order to explain the voltage change due to particle cracking, which is not considered in the conventional discharge curve analyses. Herein, blended cathode and particle models to advance the conventional discharge curve analyses have been presented. We have implemented these models besides basic model within our discharge curve analysis code called VOLCALO (VOLtage CALculation and Optimization). The blended cathode model could reproduce the measured values of the discharge curve of cycled batteries better than the conventional method and obtain a change in blend weight ratio due to degradation. The particle model analysis revealed that considering the particle size change due to particle cracking, changes in the discharge curves near the discharge end could be explained by the increase of surface sites.
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影响因子:
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通讯作者:
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DOI:
--
发表时间:
2016
期刊:
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