Nanoporous silver-modified LaCoO3-δ perovskite for oxygen reduction reaction

Promoting nitrate electroreduction to ammonia over A-site deficient cobalt-based perovskite oxides

“…Generally, in the category of perovskite oxides, beneting from their extremely abundant crystal structures and electronic features (e.g., coordination, spin state, valence state), cobalt-based perovskite oxides exhibit the most varied physicochemical properties, occupying a very important position in electrocatalysis. [26][27][28][29] On this basis, if the physicochemical properties of cobalt-based perovskite oxides could be rationally regulated in a targeted manner, they would be expected to provide more attractive NO 3 ER catalytic properties relative to other types of perovskite oxides. However, to our knowledge, there have been very few reports on cobalt-based perovskite oxides as catalysts for NO 3 ER, not to mention the rational electrocatalytic performance promotion.…”

Rational design of Ruddlesden–Popper perovskite electrocatalyst for oxygen reduction to hydrogen peroxide

“…Metal oxide catalysts, especially perovskite like catalysts, including double perovskites (A 2 B 2 O 6 ), 20 single perovskites (ABO 3 ), 21 pyrochlore‐type oxides (A 2 B 2 O 7 ), 22 and Ruddlesden–Popper perovskites (A 2 BO 4 ), 23,24 have emerged as an interesting family of electrochemical catalysts due to their physical and chemical characteristics 25–29 . These benefits can be ascribed to the low cost of transition metals, 30,31 the high stability of the crystal structure, and flexibility of catalyst design 32,33 . Up to now, perovskite oxide catalysts because of their excellent physical and chemical properties have been applied for catalytic oxidation, 34 membrane technology, 35–37 solid electrolytes, 36,38 metal‐air batteries, 39 electrochemical hydrogen compressors, 40 solid‐state fuel cells, 41–43 lithium–sulfur batteries, 44,45 phase transition materials, 46,47 photocatalytic catalysis, 48 photoelectrochemical catalysis 49,50 .…”

“…[25][26][27][28][29] These benefits can be ascribed to the low cost of transition metals, 30,31 the high stability of the crystal structure, and flexibility of catalyst design. 32,33 Up to now, perovskite oxide catalysts because of their excellent physical and chemical properties have been applied for catalytic oxidation, 34 membrane technology, [35][36][37] solid electrolytes, 36,38 metal-air batteries, 39 electrochemical hydrogen compressors, 40 solid-state fuel cells, [41][42][43] lithium-sulfur batteries, 44,45 phase transition materials, 46,47 photocatalytic catalysis, 48 photoelectrochemical catalysis. 49,50 oxygen reduction, 51,52 oxygen evolution, 53,54 hydrogen evolution, 55 and nitrogen reduction.…”

A facile mixed complex synthesis method for perovskite oxides toward electrocatalytic oxygen reduction

“…Moreover, the perovskitetype oxygen-deficient oxides (designated as ABO 3Àd ), with the simultaneous oxygen ionic (O 2À ) and electronic (e À ) mixedconducting characteristics, have been paid increasing attention due to the potentially attractive applications for the industrial oxygen enrichment/air membrane separation [14][15][16][17] and for the electrochemical oxygen reduction and/or evolution reaction (ORR/OER) processes. [17][18][19][20][21][22] In this study, La (0.5+x) Sr (0.5Àx) FeO 3Àd (x = 0.00, 0.10, 0.20) oxides for the electrochemical ORR were prepared by a facile reaction-EDTA/ citric acid mixed complex synthesis method (as shown in Scheme 1, details in the ESI †). The structural, morphological, and surface properties of the perovskite-type oxides were characterized using XRD, SEM-EDX, TEM/HRTEM, and XPS.…”

“…Moreover, the perovskite-type oxygen-deficient oxides (designated as ABO 3− δ ), with the simultaneous oxygen ionic (O 2− ) and electronic (e − ) mixed-conducting characteristics, have been paid increasing attention due to the potentially attractive applications for the industrial oxygen enrichment/air membrane separation 14–17 and for the electrochemical oxygen reduction and/or evolution reaction (ORR/OER) processes. 17–22…”