%0 Journal Article %T Cryo ion polishing and high-resolution electron microscopy on a layered PEM composite of an automotive fuel cell %A Kopp, A. %A Niedermeier, J. %A Nagel, A. %A Bernthaler, T. %A Schneider, G. %J Practical Metallography %V 59 %N 8-9 %P 475-487 %@ 0032-678X %D 2022-08-01 %I De Gruyter %~ DeepDyve