Mesoporous iridium oxide/Sb-doped SnO2 nanostructured electrodes for polymer electrolyte membrane water electrolysis

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

“…The prepared catalyst showed superior electrochemical performance with a low overpotential of 256 mV at a current density of 10 mA cm −2 , compared to pure IrO 2 (283 mV). Moreover, the results from the PEM water electrolysis experiments showed that the IrO 2 /ATO catalyst achieved a higher current density of 0.838 A cm −2 at 1.6 V, whereas the pure IrO 2 achieved a current density of 0.799 A cm −2 at the same voltage of 1.6 V. 102…”

“…The prepared catalyst showed superior electrochemical performance with a low overpotential of 256 mV at a current density of 10 mA cm −2 , compared to pure IrO 2 (283 mV). Moreover, the results from the PEM water electrolysis experiments showed that the IrO 2 /ATO catalyst achieved a higher current density of 0.838 A cm −2 at 1.6 V, whereas the pure IrO 2 achieved a current density of 0.799 A cm −2 at the same voltage of 1.6 V. 102 Wang S. et al (2021) proposed the use of iridium oxide supported with nitrogen-defective graphite carbon nitride (IrO 2 / N-CN) as an OER catalyst under acidic conditions. The proposed IrO 2 /N-CN catalyst exhibited higher mass and specic activities, being 7.86-fold and 1.75-fold higher than that of bare IrO 2 respectively.…”

Effect of Sb-Doped SnO2 Nanostructures on Electrocatalytic Performance of a Pt Catalyst for Methanol Oxidation Reaction

“…The ATO sample was synthesized by the Adams fusion method [27,46]. To prepare ATO, the desired amount of SnCl 4 •5H 2 O (Sigma-Aldrich, 98%) was dissolved in 100 mL of de-ionized (DI) water with stirring for 30 min, and 5% SbCl 3 was then added, calculated based on tin chloride, and continually stirred for 24 h. Subsequently, excessive NaNO 3 (Sigma-Aldrich, 99%) was added to the solution under sonication with stirring for 30 min.…”

Strong Metal‐Support Interactions in ZrO2‐Supported IrOx Catalyst for Efficient Oxygen Evolution Reaction

“…Several studies have highlighted its usefulness. [30,38,[56][57][58][59] However, recent work by DaSilva et al showed that in IrO 2 /ATO, the presence of dopants (F, In, Sb) in SnO 2 resulted in increased Sn dissolution in comparison to the materials supported on the pristine SnO 2 . [42] Furthermore, the specific use of Sb seemed to destabilize the IrO x phase, leading to a higher Ir dissolution.…”