锰氧化物的 Mn 2p 和 O 1s X 射线吸收光谱学

IF 1.8 4区物理与天体物理 Q2 SPECTROSCOPY

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2024-06-08 DOI:10.1016/j.elspec.2024.147452

Haytham Eraky , James J. Dynes , Adam P. Hitchcock

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引用次数: 0

摘要

锰氧化物（MnOx）在电池和超级电容器等许多不同的储能应用中被用作电极材料。利用近边缘 X 射线吸收光谱 (NEXAFS) 进行化学标示的 X 射线光谱学是研究此类系统中还原和氧化过程的有力工具。定性鉴定和定量绘制氧化锰物种图谱都需要高质量的参考光谱。在此，我们利用透射和全电子产率 X 射线吸收技术测量了 MnO、MnSO4、Mn3O4、Mn2O3、α-MnO2、β-MnO2 和 KMnO4 准确、定量的 Mn 2p 和 O 1s NEXAFS 光谱。举例说明了在研究锌/二氧化锰电池时如何使用这些参考光谱。

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Mn 2p and O 1s X-ray absorption spectroscopy of manganese oxides

Manganese oxides (MnOx) are used as electrode materials in many different energy storage applications such as batteries and supercapacitors. X-ray spectromicroscopy, using near edge X-ray absorption spectra (NEXAFS) for chemical speciation, is a powerful tool to study reduction and oxidation processes in such systems. High quality reference spectra are required for both qualitative identification and quantitative mapping of MnOx species. Here we present accurate, quantitative Mn 2p and O 1s NEXAFS spectra of MnO, MnSO₄, Mn₃O₄, Mn₂O₃, α-MnO₂, β-MnO₂, and KMnO₄, measured using both transmission and total electron yield X-ray absorption techniques. An example of the use of these reference spectra in a study of Zn/MnO₂ batteries is given.

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来源期刊

Journal of Electron Spectroscopy and Related Phenomena 物理-光谱学

CiteScore

3.30

自引率

5.30%

发文量

审稿时长

60 days

期刊介绍： The Journal of Electron Spectroscopy and Related Phenomena publishes experimental, theoretical and applied work in the field of electron spectroscopy and electronic structure, involving techniques which use high energy photons (>10 eV) or electrons as probes or detected particles in the investigation.