Sodium lamp electrodes are components used in sodium lamps, which are gas discharge light sources widely applied in functional outdoor and industrial lighting such as roads, airports, ports, stations, squares, and industrial facilities where color rendering is not critical, as sodium lamps emit a characteristic yellow-orange light that provides high road visibility, strong fog penetration, and soft illumination, making them especially suitable for traffic lighting and safety-oriented applications and remaining a mainstream solution in these fields despite the ongoing development of alternative energy-saving light sources.