图4展现了三种电解液放电过程的dQ/dV曲线,在0.18 M MACT/THF-2000电解液中,0.98 V为容量主要贡献区域,即CuSe储镁过程;1.0-1.04 V可认为是MgH2的形成过程。拉曼光谱和XPS表征也证实了放电产物中MgH2的形成。 图4 不同电极液中全...
图1. (a)Mg2+-沸石层的示意图和相应的作用效果;(b)Mg2+-沸石通道内独特的Li+溶剂化基团的配置示意图;(c)各种电解液的拉曼光谱和FTIR光谱;循环后(d)原始锂箔及(e)Mg2+-沸石层改性锂箔的XPS光谱。 具体而言,沸石孔道提供了低配位的Li+溶剂化基团,促成了更快的去溶剂化过程、更具离子传输能力的阴离子衍生...
非原位XPS测试证明:材料在首次放电后观察到明显的Li+和Mg2+嵌入,Li+在嵌入TiNb2O7/G后激活了Mg2+的嵌入,并且在充电时Li+完全脱出,而Mg2+部分未脱出,证明了结构不可逆的变化是由Mg2+的不完全脱出所引起的,并且这种不可逆的变化被...
RT。请虫子们赐教，知道Mg2+的在50.6 eV左右，但查不到Mg原子的峰值在哪儿。
The resulting (Pb0.95Sr0.05)(Zr0.425Ti0.45Mg0.042Sb0.083)O3-未 is examined by X-ray diffraction, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), dielectric spectroscopy (DS) and resonance dielectric spectroscopy (...
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结果:1.EDS和XPS结果共同验证了Mg元素的成功掺杂,并且随着反应物六水氯化镁质量的增加,产物中Mg原子的含量随之增加,因此将黑枸杞和六水氯化镁质量比为1:4的样品命名为Mg-CDs.Mg-CDs溶液在紫外光激发下发出明亮的绿色荧光,且表现出碳点的激发依赖.TEM结果显示,Mg-CDs形状为球形,平均直径为2.0±0.02 nm,有明显的...
The effects of chloride precursors on the Pd valence states and surface structures of Pd Mg 2+ /SiO 2 catalysts for carbon monoxide hydrogenation have been studied by means of electron-spin resonance (ESR) and X-ray photoelectron spectroscopy (XPS) techniques. The Cl-containing catalyst exhibits...
首先利用XPS检测循环前后电极Mn的价态(图3a,b)。经过XPS反卷积后,获得了Mn3+/Mn4+比值的定量信息,如图3c所示。对于新鲜制备的电极,两个样品中的Mn3+均仅占Mn总量的~20%。但在2 C倍率下循环200圈后,裸LR电极的Mn3+比例显著增...
This hypothesis has confirmed by pore measurement and XPS characterizations. Desalination experiments revealed that the prepared aliphatic polyamide membrane exhibits an excellent rejection rate on divalent cation, and a higher ion selectivity (Na+/Mg2+, Na+/Ca2+) that is much higher than those of ...