Physicochemical Properties of (La,Sr)CoO Thick Films on Fe-25Cr Steel under Exposure to SOFC Cathode Operating Conditions.

LaSrCoO (LSC) coatings with a thickness of 50-100 µm were deposited on Fe-25Cr ferritic stainless steel (DIN 50049) via screen printing. The required suspension had been prepared using fine LSC powders synthesised using EDTA gel processes. In its bulk form, the LSC consisted entirely of the rhombohedral phase with space group , and it exhibited high electrical conductivity (~144 S·cm).

Enhancement of Li/S Battery Performance by a Modified Reduced Graphene Oxide Carbon Host Decorated with MoO.

Electrochemical energy storage systems based on sulfur and lithium can theoretically deliver high energy with the further benefit of low cost. However, the working mechanism of this device involves the dissolution of sulfur to high-molecular weight lithium polysulfides (LiPs with general formula LiS, n≥4) in the electrolyte during the discharge process. Therefore, the resulting migration of partially dissociated LiPs by diffusion or under the effect of the electric field to the lithium anode, activates an internal shuttle mechanism, reduces the active material and in general leads to loss of performance and cycling stability.

Synthesis and Characterization of BiTiO Nanoparticles Obtained via Pulsed Laser Ablation in Liquids.

Bismuth titanate (BTO) nanoparticles were obtained by pulsed laser ablation in liquid media (PLAL). Distilled water, ethanol, isopropanol, and acetone were used as media for laser ablation experiments, in which the colloidal solutions were obtained. Laser ablation was carried out using the second harmonic and fundamental wavelength of a pulsed Nd:YAG laser (532 nm and 1064 nm, respectively) with laser fluences of 25 and 12 mJ/cm, respectively.

XPS Study on Calcining Mixtures of Brucite with Titania.

In this work, we studied the phases in a Mg-Ti-O system using a 1:1 formulation of MgO:TiO, mixing synthetic brucite of Mexican origin with TiO microparticles of high purity, with a heat treatment at 1100 °C for 1 h. Due to its valence electrons, TiO can contribute to the sintering process to improve density in MgO products. The raw materials and formulation by XPS and X-RD techniques were characterized.

MgO-ZrO Ceramic Composites for Silicomanganese Production.

The deterioration of the refractory lining represents a significant problem for the smooth operation in the ferroalloys industry, particularly in the production of silicomanganese, due to the periodic requirements of substitution of the damaged refractory. Within this context, magnesia refractories are commonly employed in the critical zones of the furnaces used in silicomanganese production since the slag involved in the process has a basic character. The behavior of MgO-ZrO ceramic composites with different ZrO nanoparticles (0, 1, 3, and 5 wt.

Research and Development of Novel Refractory of MgO Doped with ZrO Nanoparticles for Copper Slag Resistance.

This study investigates the corrosion mechanism on 100 wt.% MgO and 95 wt.% MgO with 5 wt.

Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete.

In the present work, the effect of mineral aggregates (pumice stone and expanded clay aggregates) and chemical admixtures (superplasticizers and shrinkage reducing additives) as an alternative internal curing technique was investigated, to improve the properties of high-performance concrete. In the fresh and hardened state, concretes with partial replacements of Portland cement (CPC30R and OPC40C) by pulverized fly ash in combination with the addition of mineral aggregates and chemical admixtures were studied. The physical, mechanical, and durability properties in terms of slump, density, porosity, compressive strength, and permeability to chloride ions were respectively determined.