Efficient Proton Conductivity of Gas‐Tight Nanomembranes of Silica‐Based Double Oxides

Nanometer-thick membranes of a large variety of silica-based double oxides commonly show gas-tightness (H2 and O2) and efficient proton conduction at 100–400 °C under dry atmosphere. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.