Assessing stability and performance of fluorine-doped tin oxide electrodes for peroxide formation in carbonate-based electrolytes

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Twente-
Autor(es): dc.contributorRuhr-University Bochum-
Autor(es): dc.creatorRomeiro, Fernanda da Costa-
Autor(es): dc.creatorOrlandi, Marcelo Ornaghi-
Autor(es): dc.creatorMul, Guido-
Autor(es): dc.creatorWenderich, Kasper-
Autor(es): dc.creatorMei, Bastian-
Data de aceite: dc.date.accessioned2025-08-21T19:00:36Z-
Data de disponibilização: dc.date.available2025-08-21T19:00:36Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-11-09-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.electacta.2023.143166-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301962-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301962-
Descrição: dc.descriptionHydrogen peroxide (H2O2) is a valuable chemical currently produced industrially on a large scale by the anthraquinone process. Recently, carbonate and/or bicarbonate-induced selective water oxidation to hydrogen peroxide has been suggested as an environmentally friendly alternative. In this manuscript, we discuss the effect of electrolyte concentration and type of cation in selective water oxidation using carbonate-based electrolytes (i.e., Na2CO3, K2CO3 and Cs2CO3) on fluorine-doped tin oxide (FTO) electrodes. Based on the experimental observations and a techno-economic evaluation we reveal that K2CO3 is preferred over Na2CO3 and Cs2CO3 electrolytes. Using 5 M K2CO3 a Faradaic efficiency of > 60 % was achieved at industrially relevant current densities of 100 mA cm−2. Although for 5 M Cs2CO3 electrolytes lower potentials are required at otherwise similar process conditions, a lower efficiency for hydrogen peroxide formation has been observed which is assigned to higher degradation in Cs-containing electrolyte, rendering the use of potassium-based electrolytes more efficient. Independent of the electrolyte used, the electrodes suffered from stability issues as revealed by increasing concentrations of tin in the electrolyte and electrode failure after polarization for several hours. Overall, this work provides detailed knowledge about the impact of electrolyte concentration and type of cation and reveals the importance of appropriate cell design and process operation for meaningful hydrogen peroxide synthesis by mediated-anodic water oxidation.-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St, SP-
Descrição: dc.descriptionMESA+ Institute Photocatalytic Synthesis Group University of Twente, P. O. Box 217-
Descrição: dc.descriptionIndustrial Chemistry Ruhr-University Bochum, Universitätststr. 150-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St, SP-
Idioma: dc.languageen-
Relação: dc.relationElectrochimica Acta-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCarbonate-
Palavras-chave: dc.subjectCations effect-
Palavras-chave: dc.subjectElectrode stability-
Palavras-chave: dc.subjectFluorine doped-tin oxide-
Palavras-chave: dc.subjectPeroxide-
Título: dc.titleAssessing stability and performance of fluorine-doped tin oxide electrodes for peroxide formation in carbonate-based electrolytes-
Tipo de arquivo: dc.typelivro digital-
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