亲/疏水非均质多孔传输层增强质子交换膜电解水的气液两相传输

Key Points

• The study aims to address performance degradation in proton exchange membrane water electrolysis due to bubble blockage by introducing a new porous transport layer design.
• Developed a heterogeneous wetting porous transport layer using a mask technique and hydrophobic treatment.
• Analyzed gas-liquid transport behavior using the lattice Boltzmann method for simulation.
• Compared performance metrics at high current densities with traditional transport layers.
• At a current density of 4 A/cm2, the electrolysis voltage with the new transport layer was 2.291 V, lowering by 105.4 mV from commercial hydrophilic PTLs.
• Mass transfer loss was reduced by 56.2%, indicating improved reaction and mass transfer performance.
• The design successfully created independent transport paths for gas and liquid, facilitating efficient bubble removal and continuous liquid supply.