ECathode

Ecathode is a term that can appear in electronics, materials science, and branding, but it does not have a single, universally accepted definition. In general usage, ecathode can be seen as a portmanteau of "electronic cathode" and is sometimes used to describe cathodes—electrodes where reduction occurs—in various devices, such as vacuum tubes, diodes, and electron emitters. Some manufacturers and researchers capitalize the term (for example, eCATHODE or Ecathode) when naming products or research projects related to cathode materials or emission technologies. In electrochemistry, the standard term remains cathode; ecathode may be encountered in branding or to emphasize electronic or energy-related aspects of a cathode in a battery or fuel cell context.

In vacuum electronics, cathodes are elements that emit electrons when heated (thermionic emission) or via field emission, and discussions may reference "ecathode" in shorthand to indicate electron-emitting cathodes, though this usage is not formal nomenclature in standard texts. The word also appears in speculative or fictional contexts, where Ecathode might denote a company, device, or concept focused on electron emission or energy conversion. As such, the meaning of Ecathode is dependent on the source and context.

See also: Cathode, Anode, Electron emission, Electrochemistry, Vacuum tube.