氧化还原
阳离子聚合
共振非弹性X射线散射
价(化学)
阴极
材料科学
同步加速器
电池(电)
电化学
化学物理
散射
非弹性散射
纳米技术
化学
物理化学
X射线拉曼散射
电极
物理
光学
热力学
高分子化学
功率(物理)
冶金
有机化学
作者
Chen Cheng,Zengqing Zhuo,Shuyuan Chen,Xi Zhou,Cheng Yuan,Pan Zeng,Jinghua Guo,Liang Zhang
标识
DOI:10.1002/adfm.202403442
摘要
Abstract Redox reaction builds the foundation stone for the energy density of rechargeable battery cathodes. Probing and understanding the redox reaction behavior is crucial, but also extremely formidable, which requires individual and reliable detection of cationic and anionic redox states. Fortunately, the recently developed ultra‐high‐efficiency mapping of resonant inelastic X‐ray scattering (mRIXS) has emerged as a powerful tool to probe the battery chemistry states. Here, the latest advances of employing advanced mRIXS is summarized to investigate the cationic and anionic redox mechanism of battery cathodes during electrochemical operation. Owing to the new dimension of information along the emission energy and high sensitivity to valence 3d states, 3d transition‐metal L ‐edge (TM‐ L ) mRIXS can eliminate the lineshape distortion in conventional 3d TM‐ L fluorescence X‐ray absorption spectra and investigate the cationic redox quantitatively. Moreover, O‐ K mRIXS could fingerprint the intrinsic oxidized lattice oxygen states and quantify the oxygen redox (OR) reversibility, thus demystifying the controversy in traditional wisdom. In addition, different modification strategies coupled with underlying mechanisms for regulating the activity and reversibility of OR utilizing mRIXS are also summarized. This review provides valuable guidance for further exploration of underlying reaction mechanisms of battery cathodes by mRIXS, along with both technological and scientific improvements.
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