Highly active and stable ruthenate pyrochlore for enhanced oxygen evolution reaction in acidic medium electrolysis

Ultrafine Defective RuO2 Electrocatayst Integrated on Carbon Cloth for Robust Water Oxidation in Acidic Media

“…Unfortunately, the widespread application of PEM electrocatalysis is restricted by the lack of efficient and durable electrocatalysts for oxygen evolution reaction (OER) in acidic media . Significant progresses made during the past decades have pointed out that ruthenium and iridium oxides are benchmarking catalyst at low pH . Compared with iridium oxides, ruthenium oxides possess higher OER activity and lower cost, but lower stability .…”

Advanced Electrocatalysis for Energy and Environmental Sustainability via Water and Nitrogen Reactions

“…Slow kinetics imposes a considerable overpotential, which is similar to its reversible reaction, i.e., the ORR at the cathode of fuel cells. [ 35,36 ] Currently, producing H 2 via water electrolysis is mainly based on aqueous alkaline electrolytes and PEM electrolyzers. Relative to alkaline systems, PEM electrolyzers have distinct advantages such as a more compact structure, capability to operate at much higher current density (up to 2.2 A cm −2 ), [ 37 ] load flexibility, gas purity, and a fast‐dynamic response.…”

“…[ 158 ] Therefore, the development of active PGM‐free catalysts is the grand challenge for ORR electrocatalysis. [ 36,111 ] As mentioned above, the M–N–C‐based atomically dispersed single metal catalysts represent the best‐performing PGM‐free catalysts in acids for PEMFCs so far. [ 158–161 ] Of these, a wide variety of studied M–N–C catalysts includes Fe–N–C, [ 63,114,160,162 ] Co–N–C, [ 10,121,142,163,164 ] Cu–N–C, [ 146,165 ] Ni–N–C, [ 166–168 ] and Mn–N–C.…”

Facile doping of nickel into Co3O4 nanostructures to make them efficient for catalyzing the oxygen evolution reaction

“…The energy used for the OER is produced in various ways, such as solar, wind and nuclear technologies. [23][24][25] Having at hand an efficient electrocatalyst is one of the requirements for successfully performing the OER. Noble metal catalysts such as Ru/Ir-based materials are the state-of-the-art catalysts for the OER but they are very costly and rare in nature.…”