▎ 摘　　要

NOVELTY - Stretchable electrode comprises a conductive mat comprising nanofibers containing a polymer, a conductive layer formed on the surface of the nanofiber and a conductor. USE - The stretchable electrode is used for stretchable electronic device (claimed). ADVANTAGE - The stretchable electrode ensures stable conductivity change even in a biaxially deformed environment, prevent foreign body sensation and skin rash when used as a wearable electronic device through air/fluid permeability, permeates various fluids such as electrolytes and blood in the body, has high durability due to the possibility of deformation of the electrode even when attached to organs with varying volumes such as the heart and bladder. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for manufacturing the stretchable electrode, which involves (a) preparing a porous mat comprising a polymer crosslinked with polyalkyleneimine by supporting a porous mat comprising nanofibers containing a polymer in a polyalkyleneimine solution, swelling and performing crosslinking reaction, and (b) depositing a conductor to a predetermined depth of the porous mat to form a conductive layer on the surface of the nanofibers; and (2) a stretchable electronic device comprising the stretchable electrode.