Nitrogen’s role in electrocatalysts
Using principal component analysis (PCA) of electron energy loss spectroscopy (EELS) data, scientists from the Colorado School of Mines, Illinois, US, have made a direct observation between spatial relationship between a carbon-supported metal catalyst nanoparticle and surface-adsorbed nitrogen.
The study correlates improved catalyst-support interactions with high substrate nitrogen content in the immediate proximity of stabilised nanoparticles. The insights are applied to a prototype methanol fuel cell, which benefits in terms of performance and long-term stability.
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