Fig. 2: Fiber electrochemical characterization and performance.
From: Multi-sensing yarns for continuous wireless sweat lactate monitoring
A Spool of PtNP- rGO fiber. B SEM of PtNP-rGO fiber (scale bar = 10 µm) and magnified inset (scale bar 2 µm). C CV of rGO and PtNP-rGO in 0.5 M H2SO4. D CV of PtNP-rGO in 100 mM NaCl before and after addition of 10 mM H2O2. E Chronoamperogram of PtNP-rGO with successive additions of H2O2 (5 steps of 1 µM, 10 µM, 0.1 mM, 1 mM, with half increments between steps). Concentration noted at each order of magnitude. Inset shows first additions starting at 1 µM. F Calibration curve extracted from chronoamperograms (3 replicates). Inset shows low concentration region, with linear fit of 67.8 µA mM−1 or 2.4 mA mM−1 cm−2 when normalized to geometric surface area. All PtNP-rGO fibers were cut to length having dimensions of: l = 15 mm, d = 30–35 µm.
