Solid Polymer Electrolyte Water Electrolyser Based on Nafion‐TiO 2 Composite Membrane for High Temperature Operation

A composite Nafion‐TiO 2 membrane was manufactured by a recast procedure, using an in‐house prepared TiO 2 . This membrane has shown promising properties for high temperature operation in an SPE electrolyser allowing to achieve higher performance with respect to a commercial Nafion 115 membrane. This effect is mainly due to the water retention properties of the TiO 2 filler. A promising increase in electrical efficiency was recorded at low current densities for the composite membrane‐based SPE electrolyser at high temperature compared to conventional membrane‐based devices.