Fuel-Cell Waste Reduction Goes Platinum (IMAGE) DOE/US Department of Energy Caption In fuel cells, hydrogen gas flows through channels in membranes coated with platinum catalyst. Platinum degradation (redder colors in insets) can be affected by the presence of other gases (air or nitrogen), humidity, and location (flow inlet vs. outlet). Credit Image courtesy of University of California, Irvine Usage Restrictions Image courtesy of University of California, Irvine License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.