The preparation and properties of Y2O3/AlN anti-reflection films on chemical vapor deposition diamond

Carbon-Coated Yttria Hollow Spheres as Both Sulfur Immobilizer and Catalyst of Polysulfides Conversion in Lithium–Sulfur Batteries

“…The peaks at around 167.57 and 168.97 eV may be caused by the thiosulfate and polythionate complex, respectively Figure d shows the Y 3d spectrum of YHS@C, and two obvious peaks at 156.37 and 158.29 eV with a spin–orbit splitting of 1.92 eV can be clearly seen, which are ascribed to Y 3d 5/2 and Y 3d 3/2 , respectively . The above peak information indicates that Y is in the oxidation state of Y 3+ .…”

“…Figure d shows the Y 3d spectrum of YHS@C, and two obvious peaks at 156.37 and 158.29 eV with a spin–orbit splitting of 1.92 eV can be clearly seen, which are ascribed to Y 3d 5/2 and Y 3d 3/2 , respectively . The above peak information indicates that Y is in the oxidation state of Y 3+ . After interacting with Li 2 S 6 , the peaks of Y 3d shift to lower binding energy by 0.1 eV, which may be caused by the strong chemical affinity between polysulfides and YHS@C .…”

“…46 Figure 4d shows the Y 3d spectrum of YHS@C, and two obvious peaks at 156.37 and 158.29 eV with a spin− orbit splitting of 1.92 eV can be clearly seen, which are ascribed to Y 3d 5/2 and Y 3d 3/2 , respectively. 47 The above peak information indicates that Y is in the oxidation state of Y 3+ . 47 After interacting with Li 2 S 6 , the peaks of Y 3d shift to lower binding energy by 0.1 eV, which may be caused by the strong chemical affinity between polysulfides and YHS@C. 48 The chemical affinity on the YHS@C surface is the most significant driving force to capture and catalyze the polysulfides, and such chemical affinity can be usually generated when Lewis acidic materials are introduced as sulfur host or separator coating, which is good for realizing the good performance of Li−S battery.…”

“…47 The above peak information indicates that Y is in the oxidation state of Y 3+ . 47 After interacting with Li 2 S 6 , the peaks of Y 3d shift to lower binding energy by 0.1 eV, which may be caused by the strong chemical affinity between polysulfides and YHS@C. 48 The chemical affinity on the YHS@C surface is the most significant driving force to capture and catalyze the polysulfides, and such chemical affinity can be usually generated when Lewis acidic materials are introduced as sulfur host or separator coating, which is good for realizing the good performance of Li−S battery. 25,27 On the basis of the above analysis, YHS may be competitive in the application of Li−S battery.…”

Study on reactive sputtering of yttrium oxide: Process and thin film properties

“…Briefly, owing to high chemical and thermal stability (melting point is up to~2349°C) [1,2], and its mechanical properties (high strength and fracture toughness) [3], yttrium oxide films and particles have been used in thermal or reaction barrier coatings [4] and oxide dispersion strengthened steels [5,6]. Particularly, due to the excellent optical and electric properties, including a wide transmittance range, high refractive index (~2), low absorption, large band gap (~5.4 eV), and high permittivity (~14-18) accompanied with a lattice match with Si and GaAs (for the cubic phase) and graphene (for the hexagonal phase), yttrium oxide thin films become one of the most interesting materials widely used in optical waveguides [7][8][9], and as an antireflective layer [10], or as a high efficiency phosphor by doping with other rare-earth elements [11,12], as well as one component of high-quality metal-oxide-semiconductor (MOS) based devices [13][14][15][16][17][18].…”