Structure‐Performance Relationship of LaFe1‐xCoxO3Electrocatalysts for Oxygen Evolution, Isopropanol Oxidation, and Glycerol Oxidation

Brix, Ann Cathrin; Dreyer, Maik; Koul, Adarsh; Krebs, Moritz; Rabe, Anna; Hagemann, Ulrich; Varhade, Swapnil; Andronescu, Corina; Behrens, Malte; Schuhmann, Wolfgang; Morales, Dulce M.

doi:10.1002/celc.202200092

Cited by 16 publications

(14 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The literature about the electrooxidation of alcohols and polyols (different from methanol) on perovskite oxides is scarce, except for those related to SOFC, which are out of the scope of this review. Apart from the study performed by some of us using glycerol, there is one preliminary research about the electrooxidation of ethanol on LaRuO3 and SrRuO3 184 and another about the electrooxidation of glycerol and isopropanol on LaFe1-xCoxO3 performed by Dulce Morales et al 199 . Santiago et al 200 studied the electrochemical oxidation of glycerol on LaNiO3 and LaCoO3 and identified the reaction pathway involving the formation of glycolic acid, oxalic acid and formic acid.…”

Section: (Electro-)oxidation Of Alcohols and Polyols On Metal Oxidesmentioning

confidence: 99%

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Santiago

Raju

Akkiraju

et al. 2023

Preprint

View full text Add to dashboard Cite

The cost-effective production of green hydrogen is one of the most important challenges for a sustainable energy transition. To decrease the cost in the production of hydrogen through electrolysis, there are several obstacles that must be overcome. For instance, more active and stable anodes made of abundant and cheap materials will contribute to lowering the capital and operational expenditure of the process. It is well-known that the oxidation of water requires high overpotentials, which is the main limitation for the performance of the device. In this context, substituting the oxidation of water (OER) at the anode of electrolyzers by the oxidation of biomass-derived substances contribute to the overall process by decreasing the power input of the devices and, in some cases, by producing value-added chemicals. Herein, we re-visited some of the most important fundamental aspects of the (electro-)oxidation of alcohols and polyols on metal-based catalysts, focusing on reaction descriptors. Then, we moved to the (electro-)oxidation of these molecules on metal oxides, re-visiting some of the literature about their application in heterogeneous catalysis and for OER, to get insights about the relation of the structure of the materials and their activity. Due to the lack of fundamental knowledge about the electro-oxidation of alcohols and polyols on metallic oxides and to the vast literature about the use of perovskite oxides for OER, we propose to start systematic studies using perovskite oxides for the electrooxidation of alcohols and polyols. Consequently, we presented results for LaCoO3, LaFeO3, LaMnO3, and LaNiO3, and propose a mechanism for the electro-oxidation of glycerol based on the formation and reactivity of MOH(O) species. We believe that fundamental and systematic studies in this topic would permit the establishment of reaction descriptors, speeding up the searching for suitable materials for this reaction and paving the way for a most cost-effective production of green hydrogen.

show abstract

Section: (Electro-)oxidation Of Alcohols and Polyols On Metal Oxidesmentioning

confidence: 99%

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Santiago

Raju

Akkiraju

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…A series of LaFe 1‐ x Co x O 3 perovskite materials were developed for electrocatalytic OER, isopropanol oxidation reaction (iPOR) and glycerol oxidation reaction (GOR). [ 65 ] A structure/metal composition–activity relationship was investigated and different trends were observed for different oxidation reactions, which was derived from different active sites and reaction intermediates involved. By contrast, the electrochemical surface areas were proved to have no correlation with the electrochemical oxidation reaction activities.…”

Section: Design Of Anodic Electrocatalysts For Hybrid Water Electrolysismentioning

confidence: 99%

Circumventing Challenges: Design of Anodic Electrocatalysts for Hybrid Water Electrolysis Systems

Wang

Sun

Ren

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

Water electrolysis, driven by renewable energy resources, is a promising energy conversion technology that has gained intensive interest in recent years. However, conventional water electrolysis faces a number of challenges, including large thermodynamic potential gaps, valueless anodic products, explosive hydrogen/oxygen mixtures, reactive oxygen species, and limited pure water. Hybrid water electrolysis, appending different electrolytes in the anode compartment to circumvent the above‐mentioned challenges in conventional water electrolysis, is a particularly attractive alternative. In this review, for the first time, a holistic and subtle description of hybrid water electrolysis is provided, focusing on the design of high‐activity/selectivity/stability anodic electrocatalysts for the electrochemical oxidation of various chemicals, such as alcohol, aldehyde, amine, urea and hydrazine, or the oxygen evolution reaction in seawater electrolytes. Comprehensive judging criteria for anodic oxidation reactions, electrocatalysts, and reaction parameters in hybrid water electrolysis are discussed. Some technoeconomic assessments, feasibility analyses, mechanism explorations, and correlation comparisons are involved. Finally, perspectives on and opportunities for future research directions in hybrid water electrolysis systems are outlined.

show abstract

“…The literature about the electrooxidation of alcohols and polyols (different from methanol) on perovskite oxides is scarce, except for those related to SOFC, which are out of the scope of this review. Apart from the study performed by some of us using glycerol, there is one preliminary research about the electrooxidation of ethanol on LaRuO3 and SrRuO3 184 and another about the electrooxidation of glycerol and isopropanol on LaFe1-xCoxO3 performed by Dulce Morales et al 199 . Santiago et al 200 Based on the fundamental knowledge about the electrooxidation of methanol on metal oxides, of polyols on metals, and the several products detected in the oxidation of alcohols with several carbons, we hypothesized several adsorption intermediates for the electrooxidation of polyols on metal oxides (Figure 16).…”

Section: (Electro)oxidation Of Alcohols and Polyols On Metal Oxidesmentioning

confidence: 99%

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Santiago

Raju

Akkiraju

et al. 2022

Preprint

View full text Add to dashboard Cite

The cost-effective production of green hydrogen is one of the most important challenges for a sustainable energy transition. To decrease the cost in the production of hydrogen through electrolysis, there are several obstacles that must be overcome. For instance, more active and stable anodes made of abundant and cheap materials will contribute to lowering the capital and operational expenditure of the process. It is well-known that the oxidation of water requires high overpotentials, which is the main limitation for the performance of the device. In this context, we believe that substituting the oxidation of water (OER) at the anode of electrolyzers by the oxidation of biomass-derived substances could contribute to the overall process by decreasing the power input of the devices and, in some cases, by producing value-added chemicals. Herein, we re-visited some of the most important fundamental aspects of the (electro-)oxidation of alcohols and polyols on metal-based catalysts, focusing on reaction descriptors. Then, we moved to the (electro-)oxidation of these molecules on metal oxides, re-visiting some of the literature about their application in heterogeneous catalysis and for OER, to get insights about the relation of the structure of the materials and their activity. Due to the lack of fundamental knowledge about the electro-oxidation of alcohols and polyols on metallic oxides and to the vast literature about the use of perovskite oxides for OER, we propose to start systematic studies using perovskite oxides for the electrooxidation of alcohols and polyols. We believe that fundamental studies in this topic would permit the establishment of reaction descriptors, speeding up the searching for suitable materials for this reaction and paving the way for a most cost-effective production of green hydrogen.

show abstract

Structure‐Performance Relationship of LaFe_1‐xCo_xO₃Electrocatalysts for Oxygen Evolution, Isopropanol Oxidation, and Glycerol Oxidation

Cited by 16 publications

References 75 publications

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Circumventing Challenges: Design of Anodic Electrocatalysts for Hybrid Water Electrolysis Systems

Perovskite oxides as an opportunity to systematically study the Electrooxidation of alcohols and Polyols on materials based on abundant elements: Learning from the experience using pure metals and metallic oxides in (Electro-)catalysis

Contact Info

Product

Resources

About