Fig. 5: The gradient square hole mesh design enhances performance and durability.
From: Bubble dynamics matters at high-rate water electrolysis
a Capacitive currents as a function of scan rate for ECSA (scan rate: 40–160 mV s−1). (operating conditions: room temperature (25 ± 2 °C), 1 M KOH). Cdl: double-layer capacitance. Electrochemical performance of the different stainless steel mesh designs through a zero-gap MEA system (geometric area: 4 cm2, 2.0 × 2.0 cm): b Polarization and iR-free curves. c Breakdown of each overpotential at different current densities. (operating conditions: 80 °C, PiperION A membrane (60 µm), the Pt/C cathode at a Pt loading of 0.5 mg cm−2, the anode is supplied with 1 M KOH solution at 5 ml min−1). MT: Mass transport. d EIS curves and DRT analysis at 3.0 A cm−2. e Anode and cathode potentials of the AEMWE. f AEMWE durability using gradient stainless steel square hole mesh at a current density of 1.0 A cm−2. Source data are provided as a Source Data file.
