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

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-08 DOI:10.1016/j.elspec.2024.147452

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

引用次数: 0

Abstract

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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锰氧化物的 Mn 2p 和 O 1s X 射线吸收光谱学

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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.