An effective strategy to boost hydrogen separation performance through stable mixed proton-electron conducting membrane

Hydrogen separation and purification are key to widespread application of hydrogen energy. Hydrogen permeable membranes based on lanthanum tungstate (LWO) attract attention due to favorable mechanical strength and chemical stability. However, industrial application of LWO-based membranes has remained challenging because of modest hydrogen permeances. Here we report a novel graded porous supported symmetric (GPSS) LWO-based membrane with improved transport properties, gas exchange dynamics, and operational stability, boosting stable hydrogen flux by several times over previously reported state-of-the-art membranes.

Automated summary

Hydrogen separation and purification are crucial for the widespread use of hydrogen energy. Lanthanum tungstate (LWO) based hydrogen permeable membranes have drawn attention due to their mechanical strength and chemical stability. However, the industrial application of LWO-based membranes has been challenging due to their modest hydrogen permeances. In this study, we present a novel graded porous supported symmetric (GPSS) LWO-based membrane with enhanced transport properties, gas exchange dynamics, and operational stability, significantly improving hydrogen flux compared to previous state-of-the-art membranes.