Self-Assembled Alluaudite Na2Fe3-xMnx(PO4)(3) Micro/Nanocompounds for Sodium-Ion Battery Electrodes: A New Insight into Their Electronic and Geometric Structure

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	Self-Assembled Alluaudite Na2Fe3-xMnx(PO4)(3) Micro/Nanocompounds for Sodium-Ion Battery Electrodes: A New Insight into Their Electronic and Geometric Structure
	Huang, WF; Li, BA; Saleem, MF; Wu, X; Li, JJ; Lin, J; Xia, DG; Chu, WS; Wu, ZY
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2015
卷号	21 期号:2 页码:851—860
关键词	RAY-ABSORPTION SPECTROSCOPY SOFT-X-RAY LITHIUM BATTERIES ELECTROCHEMICAL PROPERTIES MAGNETIC-PROPERTIES POSITIVE ELECTRODE CATHODE MATERIAL LIFEPO4 PHASES EDGE
英文摘要	A series of alluaudite Na2Fe3-xMnx(PO4)(3) microcompounds, which self-assembled from primary nanorods, were prepared successfully through a solvothermal method. As a promising candidate cathode for sodium-ion batteries, it is necessary to obtain a deeper understanding of the relationship between the structure and physicochemical properties of these materials. The local electronic and geometric environments were systematically investigated, for the first time, by using a combination of soft/hard X-ray absorption, IR, and Mossbauer spectroscopy. The results show that the electrochemical performance is not only associated with morphology, but also with the electronic and crystalline structure. With the introduction of manganese into the lattice, the long-range order maintains the isostructural framework and the lattice parameters expand as expected. However, for short-range order, PO4 tetrahedra and MO6 octahedra (M= Fe and Mn) become more severely distorted as a function of Mn concentration. Meanwhile, larger MnO6 octahedra will compress the space of FeO6 octahedra, which will result in stronger core/electron-electron interactions for Fe, as characterized by hard/soft X-ray absorption spectra. These slight changes in the electronic and local structures lead to different electrochemical performances with changes to the manganese content. Moreover, other physicochemical properties, such as magnetic behavior, are also confirmed to be correlated with these different electron interactions and local geometric environments.
收录类别	SCI
语种	英语
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24561]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Huang, WF,Li, BA,Saleem, MF,et al. Self-Assembled Alluaudite Na2Fe3-xMnx(PO4)(3) Micro/Nanocompounds for Sodium-Ion Battery Electrodes: A New Insight into Their Electronic and Geometric Structure[J]. CHEMISTRY-A EUROPEAN JOURNAL,2015,21(2):851—860.
APA	Huang, WF.,Li, BA.,Saleem, MF.,Wu, X.,Li, JJ.,...&Wu, ZY.(2015).Self-Assembled Alluaudite Na2Fe3-xMnx(PO4)(3) Micro/Nanocompounds for Sodium-Ion Battery Electrodes: A New Insight into Their Electronic and Geometric Structure.CHEMISTRY-A EUROPEAN JOURNAL,21(2),851—860.
MLA	Huang, WF,et al."Self-Assembled Alluaudite Na2Fe3-xMnx(PO4)(3) Micro/Nanocompounds for Sodium-Ion Battery Electrodes: A New Insight into Their Electronic and Geometric Structure".CHEMISTRY-A EUROPEAN JOURNAL 21.2(2015):851—860.