Comprehensive Spectroscopic Elucidation of Atomically Dispersed FeN4 Active Sites of Fe-N-C Electrocatalysts
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To gain insights into single-atom active sites of iron, nitrogen-doped carbon (Fe-N-C), we performed comprehensive element-specific spectroscopies including Fe K-edge X-ray absorption, 57Fe Mössbauer, and Fe Kβ1,3 and valence-to-core (VtC) X-ray emission spe... ...
