From spheres to rods: tuning defects and dislocations generated by oxygen disorder in CeO₂ nanoparticles
CeO₂ is key in catalysis, fuel cells, chemical mechanical planarization, and oxygen storage due to its Ce⁴⁺ / Ce³⁺ redox couple and oxygen mobility. At the nanoscale, properties become morphology-dependent, yet the link between morphology and mechanical behavior‒particularly elastic properties and defect structure‒rema...