Three common paths in interface research.

The BPCC method principle

Bubble Pump Consumption Chronoamperometry (BPCC) is an in-situ characterization method. Under constant potential, a metered bubble is injected onto the gas diffusion electrode surface, entering the porous interior and inducing local gas-liquid mass-transfer changes that produce a characteristic current response. By analyzing the current-time curve and combining bubble transport behavior with electrochemical kinetics models, key parameters of the GDE - porosity, effective active-site density and gas diffusion coefficient - can be quantitatively resolved. Unlike conventional off-line characterization, BPCC correlates bubble behavior, electrochemical response and internal electrode transport under near-real working conditions.