Fig. 4From: Ultra-stable Electrochemical Sensor for Detection of Caffeic Acid Based on Platinum and Nickel Jagged-Like Nanowiresa The CVs of the 0.48 μg PtNi/C electrode in 0.5 mM CA after various numbers of potential cycles at a scan rate of 100 mV s−1. b The oxidation peak current vs number of cyclesBack to article page