Solid Oxide Cell Electrode Nanocomposites Fabricated by Inkjet Printing Infiltration of Ceria Scaffolds.
Simone AnelliLuis Moreno-SanabriaFederico BaiuttiMarc TorrellAlbert TarancónPublished in: Nanomaterials (Basel, Switzerland) (2021)
The enhancement of solid oxide cell (SOC) oxygen electrode performance through the generation of nanocomposite electrodes via infiltration using wet-chemistry processes has been widely studied in recent years. An efficient oxygen electrode consists of a porous backbone and an active catalyst, which should provide ionic conductivity, high catalytic activity and electronic conductivity. Inkjet printing is a versatile additive manufacturing technique, which can be used for reliable and homogeneous functionalization of SOC electrodes via infiltration for either small- or large-area devices. In this study, we implemented the utilization of an inkjet printer for the automatic functionalization of different gadolinium-doped ceria scaffolds, via infiltration with ethanol:water-based La 1-x Sr x Co 1-y Fe y O 3- δ (LSCF) ink. Scaffolds based on commercial and mesoporous Gd-doped ceria (CGO) powders were used to demonstrate the versatility of inkjet printing as an infiltration technique. Using yttrium-stabilized zirconia (YSZ) commercial electrolytes, symmetrical LSCF/LSCF-CGO/YSZ/LSCF-CGO/LSCF cells were fabricated via infiltration and characterized by SEM-EDX, XRD and EIS. Microstructural analysis demonstrated the feasibility and reproducibility of the process. Electrochemical characterization lead to an ASR value of ≈1.2 Ω cm 2 at 750 °C, in the case of nanosized rare earth-doped ceria scaffolds, with the electrode contributing ≈0.18 Ω cm 2 . These results demonstrate the feasibility of inkjet printing as an infiltration technique for SOC fabrication.
Keyphrases
- carbon nanotubes
- solid state
- tissue engineering
- metal organic framework
- highly efficient
- quantum dots
- visible light
- reduced graphene oxide
- ionic liquid
- single cell
- cell therapy
- induced apoptosis
- gold nanoparticles
- stem cells
- cell cycle arrest
- deep learning
- cell death
- high resolution
- cell proliferation
- oxidative stress
- signaling pathway
- mesenchymal stem cells
- molecularly imprinted
- data analysis
- solid phase extraction
- transition metal