Fig. 1: Performance and pH distributions of AEMWEs.
From: Local alkalinity enables high-performance pure water anion exchange membrane electrolysis
a Polarisation curves of AEMWE supplied with DI water and electrolytes with different KOH concentrations. The presented voltages are not iR-corrected. b EIS curves of AEMWEs measured at 1.5 V, with the inset showing their Rs and Rct values. c Schematic diagram of coupling a pH ultra-microelectrode with a SECM to monitor the in situ pH distributions in an AEMWE. d Measured two-dimensional pH distribution across 3884 points within the anode and cathode catalyst layers of the AEMWE supplied with DI water. Note that the electrolyser was operated at a cell voltage of 1.9 V. Source data for Fig. 1a, b, d are provided as a Source Data file.
