Deposition of polymer coating on metallic powder through ball milling: Application to hydrogen storage intermetallics.

Ball milling technique was used for deposition of the polytetrafluoroethylene (PTFE) coating on the powder of TiFe intermetallic compound. Measurement of pressure-composition hydrogen absorption isotherms revealed that the polymer-coated TiFe intermetallic compound kept its hydrogen storage ability. The TiFe/PTFE material demonstrated resistance to surface poisoning even after a prolonged exposure to air and was not subjected to pulverization during multiple hydrogenation-dehydrogenation cycles. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]