Highly active screen-printed IrTi4O7 anodes for proton exchange membrane electrolyzers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018-03-22

Autores

Tiago Lagarteira (Autor) FEUP; Feng Han (Autor) Outra; Tobias Morawietz (Autor) Outra; Renate Hiesgen (Autor) Outra; Daniel Garcia Sanchez (Autor) Outra; Adélio Mendes (Autor) FEUP; Aldo Gago (Autor) Outra; Rémi Costa (Autor) Outra

Revista

Título: International Journal of Hydrogen Energy

Vol. 43 Nº 35

Páginas: 16824-16833

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

ISI Web of Science

Scopus - 6 Citações

Outras Informações

ID Authenticus: P-00N-T30

DOI: 10.1016/j.ijhydene.2018.02.179

Abstract (EN): Electroceramic support materials can help reducing the noble-metal loading of iridium in the membrane electrodes assembly (MEA) of proton exchange membrane (PEM) electrolyzers. Highly active anodes containing Ir-black catalyst and submicronic Ti4O7 are manufactured through screen printing technique. Several vehicle solvents, including ethane 1,2-dial; propane-1,2-diol and cyclohexanol are investigated. Suitable functional anodic layer with iridium loading as low as 0.4 mg cm(-2) is obtained. Surface properties of the deposited layers are investigated by atomic force microscopy (AFM). The most homogeneous coating with the highest electronic conductivity is obtained using cyclohexanol. Tests in PEM electrolyzer operating at 1.7 V and 40 degrees C demonstrate that the CCM with anode coated with cyclohexanol presents a 1.5-fold higher Ir-mass activity than that of the commercial CCM.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10