Infiltrated thin film structure with hydrogel-mediated precursor ink for durable SOFCs

Abstract

The hydrogel of biomolecule-assisted metal/organic complex has the superior ability to form a uniform, continuous, and densely integrated structure, which is necessary for fine thin film fabrication. As a representative of nature-originated polymers with abundant reactive side chains, we select the gelatin molecule as an element for weaving the metal cations. Here, we demonstrate the interaction between the metal cation and gelatin molecules, and associate it with coating quality. We investigate the rheological property of gelatin solutions interacting with metal cation from the view of cross-linking and denaturing of gelatin molecules. Also, we quantitatively compare the corresponding interactions by monitoring the absorbance spectrum of the cation. The coated porous structure is systematically investigated from the infiltration of gelatin-mediated Gd0.2Ce0.8O2−δ (GDC) precursor into Sm0.5Sr0.5CoO3−δ (SSC) porous scaffold. By applying the actively interacting gelatin–GDC system, we achieve a thin film of GDC on SSC with excellent uniformity. Compare to the discrete coating from the typical infiltration process, the optimized thin film coated structure shows enhanced performance and stability.

Exceptionally High‐Performance Reversible Solid Oxide Electrochemical Cells with Ultrathin and Defect‐Free Sm0.075Nd0.075Ce0.85O2‐δ Interlayers

“…This indicates that the metal ions were well chelated on the functional chains of the gelatin and effectively interrupted the formation of the cross‐linked gelatin molecules. [ 19 ] In contrast, the gelatin solvent without metal ions showed no flowability at room temperature (bottom side of Figure 1b), suggesting that the gelatin molecules returned to triple helix structures.…”

The Synthesis of Magnetic Nitrogen-Doped Graphene Oxide Nanocomposite for the Removal of Reactive Orange 12 Dye

“…Serious problems associated to dyes pushed the scientists to find solutions for the treatment of dye wastewater. Various methods including biological treatment, anodic oxidation, oxidation, electrocoagulation, photocatalysis, flocculation/coagulation, adsorption, and membrane filtration were examined and used for the treatment of real textile and dyeing effluents [6][7][8][9][10][11][12][13][14][15][16]. Among the available technologies, adsorption is the most used method due to cost-effectiveness, high efficiency, and easy operation [17].…”