Briefly, a sensor for a continuous biological monitor is provided that has a working electrode with an enhanced carbon-enzyme layer that in one embodiment is made by mixing an aqueous polyurethane emulsion with an acrylic polyol emulsion to make a base emulsion. An enzyme and carbon materials are added to the base emulsion, which is applied to the working electrode and cured. The carbon materials may include carbon and graphite to provide strength, as well as graphene or pyrolytic graphite to provide a desirable electrical resistance for the carbon-enzyme layer. Optionally, other additives can be added to the base emulsion prior to application, such as hydophiles, cross linkers, adding imodeoesters, hydroxysuccimide, carboldilite, melamines, epoxies, benzoyl peroxide or dicumyl peroxide.
