A Flexible Non-Enzymatic Electrochemical Glucose Sensor Using Cu Nanoparticle/Laser-Induced Graphene Fiber/Porous Laser-Induced Graphene Network Electrode

We demonstrate the fabrication and characterization of a flexible non-enzymatic electrochemical glucose sensor whose sensing electrode consists of electroplated Cu nanoparticles(NPs) on the laser-induced-graphene fiber (LIGF) and laser-induced porous graphene (LIG) double layer, which was made on a PI film. The non-enzymatic electrochemical glucose sensor with Cu-NPs/LIGF/LIG sensing electrode shows excellent glucose detection characteristics, including a sensitivity of 1438.8A μ/mMcm ² , limit of detection (LOD) of 124 nM, and broad linear range at an applied potential of +600mV.