Correlative imaging of ionic transport and electronic structure in nano Li0.5FePO4 electrodes.
Correlative imaging of ionic transport and electronic structure in nano Li0.5FePO4 electrodes.
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DOI：
10.1039/c9cc09116e
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发表时间：
2019-12
影响因子：
4.9
通讯作者：
Mi Lu;Fu‐da Yu;Yongfeng Hu;K. Zaghib;S. Schougaard;Zhen-bo Wang;Jigang Zhou;Jian Wang;J. Goodenough;T. Sham
中科院分区：
文献类型：
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作者：
Mi Lu;Fu‐da Yu;Yongfeng Hu;K. Zaghib;S. Schougaard;Zhen-bo Wang;Jigang Zhou;Jian Wang;J. Goodenough;T. Sham
同步辐射X射线显微镜跟踪了Li0.5FePO4在体相和表面相的分离和电子结构的变化。氧的K边XANES沿着与DFT计算揭示了不寻常的电子结构的变化，这是由于观察到的锂梯度和粒子间的传输。新的见解将有利于先进电池的未来设计。
Phase separation and electronic structure variation of Li0.5FePO4, both in the bulk and surface, under concurrent lithiation, has been tracked by synchrotron X-ray microscopies. Oxygen K-edge XANES along with DFT calculations reveal unusual electronic structure varition which is attributable to the observed lithium gradient and interparticle transport. The new insights will benefit the future design of advanced batteries.