S. Siracusano , V. Baglio , A. Stassi , L. Merlo , E. Moukheiber , A.S. Arico׳
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引用次数: 74
Abstract
An Aquivion® E87-12 S short-side-chain perfluorosulfonic acid (SSC-PFSA) membrane with equivalent weight (EW) of 870 g/eq and 120 μm thickness produced by Solvay Specialty Polymers was tested in a polymer electrolyte membrane water electrolyzer (PEMWE). For comparison, a benchmark Nafion® N115 membrane (EW 1100 g/eq) of similar thickness was investigated under similar operating conditions. Both membranes were tested in conjunction with in-house prepared unsupported IrO2 anode and carbon-supported Pt cathode electrocatalysts. The electrocatalysts consisted of nanosized IrO2 and Pt particles (particle size ~2–4 nm). Electrochemical tests showed better water splitting performance for the Aquivion® membrane and ionomer based membrane-electrode assembly (MEA) as compared to Nafion®. Lower ohmic drop constraints and smaller polarization resistance were observed for the electrocatalyst–Aquivion® ionomer interface indicating a better catalyst–electrolyte interface. A current density of 3.2 A cm−2 for water electrolysis was recorded at 1.8 V cell voltage and 90 °C with the Aquivion® based MEA. Some performance decay with time was observed indicating that the system requires further optimization of the interface characteristics.
期刊介绍:
The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.