Toward Platinum Group Metal-Free Catalysts for Hydrogen/Air Proton-Exchange Membrane Fuel Cells

The status, concepts and challenges toward catalysts free of platinum group metal (pgm) elements for proton-exchange membrane fuel cells (PEMFC) are reviewed. Due to the limited reserves of noble metals in the Earth’s crust, a major challenge for the worldwide development of PEMFC technology is to replace Pt with pgm-free catalysts with sufficient activity and stability. The priority target is the substitution of cathode catalysts (oxygen reduction) that account for more than 80% of pgms in current PEMFCs. Regarding hydrogen oxidation at the anode, ultralow Pt content electrodes have demonstrated good performance, but alternative non-pgm anode catalysts are desirable to increase fuel cell robustness, decrease the H2 purity requirements and ease the transition from H2 derived from natural gas to H2 produced from water and renewable energy sources.

The post Toward Platinum Group Metal-Free Catalysts for Hydrogen/Air Proton-Exchange Membrane Fuel Cells appeared first on Johnson Matthey Technology Review.

By |2018-04-06T14:37:43+00:00April 6th, 2018|Weld Engineering Services|Comments Off on Toward Platinum Group Metal-Free Catalysts for Hydrogen/Air Proton-Exchange Membrane Fuel Cells

Guest Editorial

Historically, Johnson Matthey has had a long association with electrochemistry, and perhaps this was inevitable because of the importance of the platinum group metals (pgm) to Johnson Matthey’s early development. Platinum, in particular, has been incredibly useful in the field, because of its exceptional electrocatalytic activity and impressive inertness in most environments. Famously, Johnson Matthey…

The post Guest Editorial appeared first on Johnson Matthey Technology Review.

By |2018-04-05T14:01:00+00:00April 5th, 2018|Weld Engineering Services|Comments Off on Guest Editorial
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