Processing and characterisation of BaZr0.8Y0.2O3−δproton conductor densified at 1200 °C

BaZr 0.8 Y 0.2 O 3− δ densifies at 1200 °C on employing a combination of Ba excess, ZnO sintering additive and nanopowders prepared by a sol–gel route. The low densification temperature decreases grain-boundary resistance despite the lower grain size.