Synthesis of Low-Hygroscopic Impregnant for Enhanced Reliability in Scandium-Containing Dispenser Cathodes

To bolster the reliability of scandium-containing dispenser cathodes (SDCs), we utilized a co-precipitation method to craft a special composition impregnant engineered for robust stability in ambient air. Subsequent analysis affirmed its perovskite-like structure, showcasing enduring resilience in humid conditions without degradation. Furthermore, cathodes treated with this impregnation showed noteworthy low-temperature emission properties. This research lays the groundwork for enhancing the performance and longevity of SDCs, paving the way for their practical application in various devices.