在OER过程中,分级多孔结构有利于活性位点的暴露以及物质的传输。结合XPS中Ni 2p的元素分析与电化学测试结果发现,高价态Ni3+含量的增加能够促进OER反应活性的提升。DFT计算结果表明,与Ni2+相比,Ni3+对OH−的化学吸附自由能较低,有利于OH...
要点1:从SEM、TEM测试结果可以得出,直径为100至150 nm的ZCS在水热反应后成功分布在玫瑰花状的Ni3S4表面。同时HRTEM、XRD以及XPS进一步证实了N/ZCS制备成功。 图1.(a)Ni3S4和(b)N/ZCS的扫描电镜;N/ZCS的(c)TEM和(d)HRTEM;(e...
It shifts 3.4 eV in contrast to 857.0 eV(Ni3+), How to explain that the Ni0 coexisted with Ni3+ in the Ni@C-N/SiO2? 展开 0评论 +关注 共5个回答 懂还是不懂我,给排水...
图2 Ni3FeN/Co,N-CNF电子结构表征 (A) Ni3FeN/Co,N-CNF的Ni 2p XPS图谱; (B) Ni3FeN/Co,N-CNF的Fe 2p XPS图谱; (C) Ni3FeN/Co,N-CNF及对比样的Ni XANES图谱; (D) Ni3FeN/Co,N-CNF及对比样的Fe XANES图谱。 图3 ORR性能表征 (A) ORR LSV曲线; (B) ORR LSV曲线对应塔菲尔斜率; ...
b XPS spectra of Sn 3d of the CsSnI3 without and with BMIMCl. c Differential charge density of the BMIMCl on CsSnI3. d Total density of state of the perovskite and the BMIMCl passivated perovskite Full size image Previous reports showed that the PMMA can fill the voids of the ...
(Supplementary Fig. 7). Also visible by XPS was a shoulder peak that was present in the N1sregion before ORR (399 eV) which disappears after catalysis (Supplementary Fig. 8). Importantly, though the catalyst may undergo minor structural rearrangement during ORR, the high activity is largely...
图2. hcp-Ni3Fe/C和fcc-Ni3Fe/C的XRD和XPS表征。 图3. 催化剂的电催化OER性能。 图4. 催化剂的电催化HER性能。 图5. 电催化水裂解性能。 参考文献 Guijuan Wei, Yongli Shen, Xixia Zhao, Ying Wang, Weiqing Zhang, Changhua An. Hexagonal Phase Ni3Fe Nanosheets toward High-Performance Water Sp...
EDS and XPS measurements confirmed the low level of oxidation of the thin film, indicating good ambient stability. A planar photodetector was also made with the prepared thin film, and electrical characteristics were taken. The dark current and photocurrent were found in the range of 10−9A and...
XPS was used to test the surface composition of the catalyst and the change in valence of the surface element. 3.6. Electrode Preparation The catalyst was made in a certain ratio of ink: 0.1 g of catalyst was mixed with 0.1 g of Ketjen black; then, 800 µL of isopropanol and 200 ...
通过原位XRD和非原位XPS揭示了该材料在充放电过程中高度可逆的结构演变和Ni/Mn价态变化;利用GITT、不同扫速CV和DFT理论计算等系统地证明了该材料具有较高的钠离子扩散系数和较低的离子迁移能垒。此外,将P2-Na2/3Ni1/3Mn2/3O2纳米纤维正极与硬碳负极匹配,合理地构建了软包钠离子全电池,展现出高能量密度和长循环...