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Retuerto, María; Pascual, Laura; Torrero, Jorge; Salam, Mohamed Abdel; Tolosana-Moranchel, Álvaro; Gianolio, Diego; Ferrer, Pilar; Kayser, Paula; Wilke, Vincent; Stiber, Svenja; Celorrio, Verónica; Mokthar, Mohamed; Sanchez, Daniel García; Gago, Aldo Saul; Friedrich, Kaspar Andreas; Peña, Miguel Antonio; Alonso, José Antonio; Rojas, Sergio
Nature communications, 12/2022, Letnik: 13, Številka: 1Journal Article
Abstract Proton exchange membrane water electrolysis is a promising technology to produce green hydrogen from renewables, as it can efficiently achieve high current densities. Lowering iridium amount in oxygen evolution reaction electrocatalysts is critical for achieving cost-effective production of green hydrogen. In this work, we develop catalysts from Ir double perovskites. Sr 2 CaIrO 6 achieves 10 mA cm −2 at only 1.48 V. The surface of the perovskite reconstructs when immersed in an acidic electrolyte and during the first catalytic cycles, resulting in a stable surface conformed by short-range order edge-sharing IrO 6 octahedra arranged in an open structure responsible for the high performance. A proton exchange membrane water electrolysis cell is developed with Sr 2 CaIrO 6 as anode and low Ir loading (0.4 mg Ir cm −2 ). The cell achieves 2.40 V at 6 A cm −2 (overload) and no loss in performance at a constant 2 A cm −2 (nominal load). Thus, reducing Ir use without compromising efficiency and lifetime.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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