High performance and cost-effective supported IrOx catalyst for proton exchange membrane water electrolysis

Advances and status of anode catalysts for proton exchange membrane water electrolysis technology

“…7c-e). 85 Kim et al chose a TiO 2 -MoO x composite as support, and the electrical conductivity of TiO 2 can be significantly enhanced. 86 Sn-based oxides and their doping counterparts, such as SnO 2 , F-doped SnO 2 (FTO), and Sb-doped SnO 2 (ATO), are also considered potential candidates, but their ionic dissolution may be more severe than that of Ti and therefore require further evaluation.…”

Recent advances in hydrogen production through proton exchange membrane water electrolysis – a review

“…It was achieved with a cell voltage of 1.602 V at a current density of 1 A cm −2 , while reducing the precious metal loadings to ≤ 0.2 mg cm −2 . 104 Kaya M. F. et al (2021) constructed a modified IrO 2 catalyst by incorporating magnetic Fe 3 O 4 to enhance gas separation during the OER process in PEM water electrolysis. The magnetized catalyst composed of 80% IrO 2 and 20% FeO 4 exhibited improved current density by 15% in half-cell studies using linear sweep voltammetry.…”

A brief introduction of electrode fabrication for proton exchange membrane water electrolyzers

“…Moreover, the performance can be improved by direct modification of TiO 2 . For example, Min et al developed the homogeneously depressed IrO x catalyst through surface modification and Ir-controlled hydrolysis on W-doped TiO 2 support [143]. The resultant MEA reached a low cell voltage of 1.602 V at 1 A cm −2 with a low Ir loading (IrO x : 0.116 mg cm −2 ), which was superior to the performance of benchmark IrO 2 and 20% IrO x /TiO 2 (IrO x : 0.82 mg cm −2 ), demonstrating performance enhancement through W doping.…”