In the present work, we measured the Fe K-edge XAFS spectra for FeS2 and Li2S-FeS2 composite positive electrode materials, and compared them in an attempt to investigate the mechanism of the cycle capability for these sample cells.

2008年4月12日 · The solid-phase Se speciation after short-term (3 weeks) contact of selenite [Se (IV)] oxyanions with pyrite (FeS 2) and troilite (FeS) was investigated using X-ray absorption spectroscopy (XAS; X-ray absorption near-edge spectroscopy−extended X-ray absorption fine structure (XANES-EXAFS)).

2021年5月1日 · The X-Ray photoelectron spectroscopy (XPS) spectra and Fe L -edge NEXAFS experiments were performed by beamline BL10B in the National Synchrotron Radiation Laboratory (NSRL) in Hefei, China. The Fe K -edge XAFS data were collected at the beamline (BL14W1) of Shanghai Synchrotron Radiation Facility (SSRF, China).

This work presents i n s i t u fluorescence Fe K-edge X-ray absorption fine structure (XAFS) data for a FeS2 cathode in a Li/FeS2 solid polymer electrolyte battery operating at 55OC at various stages of discharge and recharge to gain insight into the nature of the intermediate species denoted as Li2FeS2 (am.).

2022年6月9日 · We revisit both the initial lithiation and subsequent cycling of FeS 2 employing an ionic liquid electrolyte to investigate the intermediate and final charge products formed under varying thermal conditions (room temperature to 100 °C).

2017年9月20日 · In order to further verify the incorporation of 1T-MoS 2, we employed the X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS) …

Artemis 对 XAFS 数据拟合是重点也是难点，通过拟合可以得到配位数N、原子间距离R、无序度s. 、能量原点的位移ΔE0等结构参数。 本次介绍内容包含四部分： 1、利用Artemis程序进行 EXAFS 拟合的一般步骤. 2、Artemis拟合的基本流程. 3、Artemis数据拟合基本操作. 4、拟合结果合理性判断. 1、利用Artemis程序进行EXAFS拟合的一般步骤. Artemis: the goddess of the hunt, an apt metaphor doing EXAFS analysis. 输入文件为不加权的EXAFS振荡函数χ (k)； Artemis本身不能 …

2022年3月30日 · Here we investigated pressure-induced changes in the coordination environments of Fe 2+ and Fe 3+ in basaltic glasses based on the Fe K-edge XAFS analyses for both X-ray absorption near edge structure and extended X …

FeS2 is a cubic crystal. In this case, there are only two parameters that determine the locations of all the atoms in the cluster – the lattice constant a and the position of the S atom in the unit cell.

2016年5月22日 · 之后，用透射XAFS方法研究9表明在紫氧还素中，Fe-S的配位峰较窄，不可能有短的Fe-S健长存在，用FeS2作标样分析得到4个Fe-S键长为 (0.23~0.004)nm；或是4个Fe-S的平均 键长为 (0.2267~0.0003)nm． 10.5 XAFS应用 生物大分子 后来用更可靠的荧光XAFS方法对紫氧还素作了进一 步的 ...