Bioelectrode having improved mechanical and chemical durability and method for manufacturing same

A method of manufacturing a bioelectrode, the method comprising:

• a) manufacturing a nanofiber elastic mesh sheet including a polymer nanofiber on a substrate using electrospinning;
• b) spraying a first metal nanowire ink including a dispersion medium in a droplet form on the nanofiber elastic mesh sheet manufactured on the substrate using a spray method to coat a first metal nanowire;
• c) optical sintering the first metal nanowire to form a first metal nanowire network in which a portion of the first metal nanowires is embedded on the nanofiber elastic mesh sheet, but at least a portion is exposed to the outside;
• and
• d) precipitating a second metal on the first metal nanowire network exposed to the outside by an electroplating method to form an uneven layer.