Mesoporous NiO-Samaria doped ceria fuel cell materials

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Solid oxide fuel cells (SOFCs) require efficient anode materials for optimal performance.
• The triple-phase boundary (TPB) is crucial for charge transfer in SOFCs.
• Enhancing the TPB through microstructural control is a key research area.

Purpose of the Study:

• To synthesize mesoporous Nickel Oxide-Samarium Doped Ceria (NiO-SDC) using a cationic surfactant.
• To characterize the microstructure and properties of the synthesized mesoporous NiO-SDC.
• To evaluate its potential for enhancing the TPB in SOFC anodes.

Main Methods:

• Synthesis of mesoporous NiO-SDC using cetyl-trimethylammonium bromide (CTAB).
• Microstructural characterization using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, and High-Resolution Transmission Electron Microscopy (HRTEM).
• Fourier Transform Infrared (FT-IR) spectroscopy to confirm material incorporation.

Main Results:

• Successfully synthesized mesoporous NiO-SDC with an average pore size of 6.3 nm.
• Achieved a high surface area of 206 m²/g after calcination at 600°C.
• FT-IR confirmed the incorporation of Ni(OH)2 and SDC with the amine group of CTAB.

Conclusions:

• The developed mesoporous NiO-SDC exhibits a high surface area and suitable pore structure for SOFC anodes.
• The synthesis method effectively utilizes CTAB to create a wide TPB, potentially improving SOFC efficiency.
• This material shows promise for advanced anode development in solid oxide fuel cells.