Electrode assembly with a skin contact layer comprising a conductive adhesive composite, and systems and methods of applying tumor treating fields using same

An apparatus comprising:

• at least one electrode element having a skin-facing surface;
• a layer of anisotropic material having a skin-facing surface and an opposing outwardly facing surface;
• and
• a skin contact structure having:
• an outer adhesive layer comprising conductive adhesive composite;
• an inner adhesive layer comprising conductive adhesive composite;
• and
• a substrate positioned between the inner and outer adhesive layers,
• wherein the at least one electrode element is in electrical contact with the outwardly facing surface of the layer of anisotropic material,
• wherein the outer adhesive layer of the skin contact structure is disposed on a skin-facing side of the layer of anisotropic material, and
• wherein the inner adhesive layer of the skin contact structure is configured to contact skin of a subject.