ECG electrode, fabrication method thereof, and electronic device

An electronic device comprising:

• one or more processors configured to receive an electrocardiography signal of a monitored object;
• and
• an electrocardiography (ECG) electrode comprising:
• an electrode substrate comprising an outer surface;
• and
• a doped graphite-like carbon (GLC) film on the outer surface, wherein the doped GLC film comprises:
• a GLC comprising a carbon element, wherein the GLC has an amorphous carbon structure;
• first nano-crystals that are doped in the GLC, wherein the first nano-crystals comprise:
• a weak carbon-bonding element comprising a first part in a form of a metallic elementary substance;
• and
• a first columnar structure that extends in a thickness direction of the doped GLC film;
• second nano-crystals that are doped in the GLC, wherein the second nano-crystals comprise a strong carbon-bonding element that bonds with the carbon element through a chemical bond, and wherein the second nano-crystals are distributed between a plurality of adjacent and spaced columnar structures,
• a first surface facing the electrode substrate;
• and
• a second surface opposite to the first surface, wherein an atomic percentage of the strong carbon-bonding element gradually decreases in a first thickness direction from the first surface to the second surface,
• wherein the ECG electrode is configured to be in contact with a skin of the monitored object to:
• obtain the electrocardiography signal;
• and
• transmit the electrocardiography signal to the one or more processors.

An electrocardiography (ECG) electrode comprising:

• an electrode substrate comprising an outer surface;
• and
• a doped graphite-like carbon (GLC) film on the outer surface, wherein the doped GLC film comprises:
• GLC comprising a carbon element, wherein the GLC has an amorphous carbon structure;
• first nano-crystals that are doped in the GLC, wherein the first nano-crystals comprise:
• a weak carbon-bonding element comprising a first part in a form of a metallic elementary substance;
• and
• a first columnar structure that extends in a thickness direction of the doped GLC film;
• second nano-crystals that are doped in the GLC, wherein the second nano-crystals comprise a strong carbon-bonding element that bonds with the carbon element through a chemical bond, and wherein the second nano-crystals are distributed between a plurality of adjacent and spaced columnar structures;
• a first surface facing the electrode substrate;
• and
• a second surface opposite to the first surface, wherein an atomic percentage of the strong carbon-bonding element gradually decreases in a first thickness direction from the first surface to the second surface.