Iridium Spectra – Ir native oxide - XPS Database
The XPS Spectra section provides raw and processed survey spectra, chemical state spectra, BE values, FWHM values, and overlays of key spectra. Atom% values from surveys are based on sample, as received, and Scofield cross-sections. Atom% values are corrected for IMFP and PE. Peak-fits are guides for practical, real-world applications.
Oxygen 1s X-ray Photoelectron Spectra of Iridium Oxides as a …
2024年11月1日 · In this study, a set of commercially available IrO x materials is used as a support to establish a peak-fitting model for oxygen 1s spectra and define an accessible descriptor of the oxide surface to go beyond the amorphous/rutile qualification.
The formation of unsaturated IrOx in SrIrO3 by cobalt-doping for …
2024年4月4日 · Herein, we develop a Co-doped SrIrO 3 system to enhance oxygen evolution reaction activity and elucidate the origin of catalytic activity. In situ experiments reveal Co activates surface lattice...
XPS spectra of electrodeposited IrO x : Ir 4f spectrum.
The non-treated IrOx electrode using a glass substrate covered with F-doped SnO2 initially yielded a high OER current density at a given applied potential in an electrolyte of near-neutral pH ...
Nanosized IrOx and IrRuOx electrocatalysts for the O2 …
2015年3月1日 · IrOx and Ir 0.7 Ru 0.3 Ox nanosized materials of similar crystallite size (5 nm) were prepared for application as oxygen evolution electrocatalysts in solid polymer membrane water electrolysers (PEMWEs). The physico-chemical properties of the catalysts were characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM ...
Anodic Electrodeposition of IrOx Nanoparticles from Aqueous ...
X-ray photoelectron spectroscopy (XPS) showed the presence of Ir(III) and Ir(IV) hydrated oxyhydroxide species. The synthesis of IrO x nanoparticles under anodic conditions using water nanodroplets expands the capabilities of our technique and provides a tunable platform for IrO x nanoparticle electrodeposition.
Nanosized IrOx–Ir Catalyst with Relevant Activity for Anodes of …
2015年11月30日 · We have developed a highly active nanostructured iridium catalyst for anodes of proton exchange membrane (PEM) electrolysis. Clusters of nanosized crystallites are obtained by reducing surfactant-stabilized IrCl 3 in water-free conditions.
High resolution XPS spectra corresponding to (a) Ir4f and (b) O1s ...
Download scientific diagram | High resolution XPS spectra corresponding to (a) Ir4f and (b) O1s orbital of the IrOx electrocatalysts. from publication: Effect of Calcination Temperature on the...
Chemical states of Ir in IrOx/Zr2ON2 and Ir black. a) Ir 4f XPS …
a) Ir 4f XPS spectra after electrochemical oxidation; b) quantitative analyses of IrOx/Zr2ON2 and Ir black; and c) cyclic voltammetry curves normalized by the capacitive current of...
Science：高性能高稳定性用于电化学析氧的IrOx/SrIrO3催化剂- X …
2016年10月6日 · 美国斯坦福大学的Thomas F. Jaramillo教授等人通过脉冲激光沉积的方法在SrTiO3催化剂表面外延生长了SrIrO3的薄膜，将此催化剂在0.5 M的H2SO4中测试了电化学性能，发现其在酸性电解质下的优异性能和稳定性，并随后讨论和研究了该催化剂高活性的原因。 该工作发表在了Science上。 （A highly active and stable IrOx/SrIrO3 catalyst for the oxygen evolution reaction. Science, 2016, 353, 1011-1014, DOI: 10.1126/science.aaf5050）。