A novel catalytic-type gas sensor based on alumina ceramic substrates loaded with catalysts and printed electrodes

lThe porous alumina ceramics act as the supports of catalysts and the substrates of Pt heating electrodes, simultaneously.lThe preparation of platinum electrodes in batch enable sensors with a high uniformity.lThe high sensitivity and stability of prototype H2 sensors was achieved.lHeat transfer analysis by FEM modeling was carried out to verify the sensing performance of H2 sensors.