通过Al和阳离子空位的协同作用,新设计的无钴阴极的可逆性显著增强。该工作以”Promoting Reversibility of Co-Free Layered Cathodes by Al and Cation Vacancy”为题发表在Advanced Energy Materials上。 研究亮点 Al虽能抑制Li/Ni混排,但...
氧空位(Oxygen Vacancy, OVs)的概念最早于1960年提出,用于研究和固体表面接触的气体。对于金属氧化物,如果在特定外界环境下(比如高温),会造成晶格中的氧脱离,导致氧缺失,形成氧空位,缺陷方程可以表示为O=1/2O2+Vo。对于金属氧化物,其氧空位是缺陷的一种。由于在氧化物中相对于氧,其他元素的电负性一般小于氧,所以...
The peak ranges from 528.83 to 529.08 eV, 530.55–530.63 eV and 532.32–534.21 eV represent lattice oxygen (OL), oxygen vacancy (OV) and chemi-absorbed oxygen (OC), respectively [43–45]. The amount of OC increases with calcination temperature and found maximum for N400 sample. The Nickel ...
The X-ray photoelectron spectroscopy (XPS) measurements for the Sn 0.95Co 0.05O 2 thin film on Si predicated that Co has oxidation states of +3. The good magnetic property of the Co-doped SnO 2 may be deduced the exchange between Co 3+ and Co 3+ through the oxygen vacancy....
一、XPS基本介绍 X-rayPhotoelectronSpectroscopeX-射线光电子能谱仪 ESCAElectronSpectroscopeofChemicalAnalysis 化学分析电子能谱仪 1954年，瑞典皇家科学院院士、Uppsala大学物理研究所所长Kai.Siegbahn教授研制出世界上第一台PhotoelectronSpectroscopy(XPS)，精确测定了元素周期表中各种原子的内层电子结合能。但直到上世纪60...
[2]Oxygen-vacancy-mediatedexcitondissociation in BiOBr forboostingcharge-carrier-involvedmolecularoxygenactivation Hui Wang, Dingyu Yong, Shichuan Chen, Shenlong Jiang, Xiaodong Zhang, Wei Shao, Qun Zhang, Wensheng Yan, Bicai Pan, Yi Xie Journal of the American Chemical Society, Volume 140, Issue ...
X-ray photoelectron spectroscopy analyses confirmed the presence of vacancy related defects and revealed the presence of ~ 22% of Ce3 + in the nanopowders. High-resolution transmission electron microscopy results confirmed that the nanocrystal sizes are around 31 ± 5 nm and the obtained...
Vacancy ordered γ-Fe2O3 nanoparticles functionalized with nanohydroxyapatite: XRD, FTIR, TEM, XPS and Mössbauer studies Morales, E.O. Lopez, et al., Vacancy ordered γ-Fe2O3 nanoparticles functionalized with nanohydroxyapatite: XRD, FTIR, TEM, XPS and Mossbauer studies,... [ Juan A. ...
L3L1K AugerRelationofCoreHole EmittedAugerElectron FreeElectronLevelFermiLevelLelectronfallstofillcorelevelvacancy(step1).KLLAugerelectronemittedtoconserveenergyreleasedinstep1.ThekineticenergyoftheemittedAugerelectronis:KE=E(K)-E(L2)KE=E(K)-E(L2)-E(L3).ConductionBand ValenceBand2p2s1sL2,L3L1K ...
The formation of such a vacancy agrees with the unusually high (16 eV) binding energy (BE) shift of the peaks associated with the final state Ce 3d95p5np1 relative to the peaks associated with the ground final state Ce 3d94f0. The complex XPS structure parameters can be used for ...