The high cost and limited supply of platinum has driven intensive research into the use of non-platinum group metals (PGM-free) as cathode oxygen reduction reaction (ORR) catalysts for proton exchange membrane fuel cells (PEMFCs), which is crucial in promoting the large-scale applications of PEMFCs and the most important step to achieve the DOE ult...
The high cost and limited supply of platinum has driven intensive research into the use of non-platinum group metals (PGM-free) as cathode oxygen reduction reaction (ORR) catalysts for proton exchange membrane fuel cells (PEMFCs), which is crucial in promoting the large-scale applications of PEMFCs and the most important step to achieve the DOE ult...
Replacement of Pt-based oxygen reduction reaction (ORR) catalysts with non-precious metal catalysts (NPMCs) such as Fe/N/C is one of the most important issues in the commercialization of proton exchange membrane fuel cells (PEMFCs). Despite numerous studies on Fe/N/C catalysts, a fundamental study on the development of a versatile strategy is still...
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 ...
We synthesized ordered mesoporous Fe/N/C with highly active Fe-N-X/C sitesdenoted as m-FePhen-C as a non precious metal catalyst (NPMC) for the oxygen reduction reaction in fuel cells. This was the first study that incorporated a catalyst precursor with Fe-N coordination directly in a simple block co-polymer-assisted soft template method for the sy...
10.1002/smll.201701143 / SMALL / 13 / 37
Although major progress has recently been achieved through ex situ methods, there is still a lack of understanding of the behavior of the active center in non-precious metal Fe–N/C catalysts under operating conditions. Utilizing nitrite, nitric oxide, and hydroxylamine as molecular probes, we show that the active site for the oxygen reduction react...
Published in Nature communications
The economic viability of low temperature fuel cells as clean energy devices is enhanced by the development of inexpensive oxygen reduction reaction catalysts. Heat treated iron and nitrogen containing carbon based materials (Fe-N/C) have shown potential to replace expensive precious metals. Although significant improvements have recently been made...
