Graphene-Based Flexible Electrode for Electrocardiogram Signal Monitoring

With the rapidly aging society and increased concern for personal cardiovascular health, novel, flexible electrodes suitable electrocardiogram (ECG) signal monitoring are in demand. Based on excellent electrical mechanical properties of graphene rapid development device fabrication technologies, graphene-based ECG have recently attracted much attention, many with performance been developed. To understand current research progress help researchers clarify conditions directions, we systematically review recent advances electrodes. Graphene classified as bionic, fabric-based, biodegradable, laser-induced/scribed, modified-graphene, sponge-like, invasive, etc., based their design concept, structural characteristics, preparation methods, material properties. Moreover, some categories further divided into dry or wet Then, performance, including electrode–skin impedance, signal-to-noise ratio, skin compatibility, stability, is analyzed. Finally, discuss possible directions share our views.