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[Analysis Case] Evaluation of Nitrogen Substitution Positions in Nitrogen-Doped Carbon Materials

It is possible to identify the substitution position of nitrogen and achieve quantitative separation using chemical shifts.

Carbon materials with nitrogen (N) atoms introduced as substitutes for platinum (Pt), the electrode catalyst in fuel cells, are attracting attention, and the catalytic activity is significantly related to the substitution positions of N within the carbon materials. XPS analysis allows for the evaluation of the N1s spectrum, where chemical shifts occur due to differences in bonding states and substitution positions of N, enabling the identification and quantitative separation of which C positions have been substituted by N.

• Company：一般財団法人材料科学技術振興財団　MST
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