In this work, using ab initio thermodynamics and in situ X-ray photoelectron and absorption spectroscopy we show that the same electrophilic O I− species that appear on Ir-based oxides …

X-ray diffraction patterns (Fig. 1a) showed the presence of a face-centred cubic structure for the Ir-black (JCPDS no. 15870) catalyst and a tetragonal rutile structure for the IrO 2 sample [5].

IrO 2 as an anodic electrocatalyst for the oxygen evolution reaction (OER) in solid polymer electrolyte (SPE) electrolysers was synthesised by adapting the Adams fusion method. …

2019年7月1日 · Tetragonal space group of rutile-type crystal lattice of IrO2 (Fig. 1 (a)) and IrRuO x (Fig. 1(b)) can be identified in the XRD patterns on both, the unsupported catalysts and the …

2024年7月1日 · The XRD diffractograms reveal characteristic peaks of metallic Ir and rutile IrO 2. In the case of Ir black, sharp peaks with a broader base are observed at 40.7° and 47.3°, …

Three-dimensional ordered macroporous (3-DOM) IrO2 was synthesized by using the silica colloidal crystal template method and explored as electrocatalyst for oxygen evolution reaction …

2008年9月6日 · IrO 2 –RuO 2, IrO 2 –Pt and IrO 2 –Ta 2 O 5 electrocatalysts were synthesized and characterized for the oxygen evolution in a Solid Polymer Electrolyte (SPE) electrolyzer. …

2019年4月4日 · Iridium hydroxide is easily dehydrated to produce iridium oxide under 300 °C, which can protect the 3-DOM structure against collapse. 3-DOM IrO 2 was characterized by …

2015年4月27日 · The XRD patterns of the Ru 0.8 Ir (0.2-x) Ce x O 2 trimetallic oxides are depicted in Figure 1 b. The intense peaks are similar and characteristic of the rutile structure. …

2012年1月19日 · Here we report a synthesis of r-IrO 2 and r-RuO 2 nanoparticles (NPs) of ∼6 nm, and examine their OER activities in acid and alkaline solutions. Both r-IrO 2 and r-RuO 2 NPs …