@article{oai:ynu.repo.nii.ac.jp:00009942,
 author = {Taniguchi, Moeka and Yoshie, Ryo and Akikubo, Kazuma and Tateno, Akira and Hotozuka, Kozue and Kawaguchi, Norihito and Uchida, Takashi and Tanimura, Makoto and Tachibana, Masaru},
 journal = {Electrochimica Acta},
 month = {May},
 note = {The effect of nitrogen (N) and iron (Fe) on oxygen reduction reaction (ORR) was investigated by using carbon nanowalls (CNWs) as carbon matrix. The dopings of N and Fe into CNWs are carried out by N plasma and Fe sputtering, respectively. The onset potentials corresponding to ORR activities are evaluated from steady-state curve of cyclic voltammogram. The composition and structure of CNW catalysts before and after ORR measurements are characterized by X-ray photoelectron spectroscopy (XPS). The onset potential increases in the order of non-, N- and Fe-N-doped CNW catalysts. The ORR activity for N-doped CNW catalysts is ascribed to pyridinic N stabilized near the surface of carbon matrix. The higher ORR activity for Fe-N-doped CNW catalysts is attributed to trace Fe-N rather than pyridinic N near the surface. Additionally, it is shown that such ORR activities due to pyridinic N and Fe-N near the surface are further promoted by Fe and Fe-N incorporated beneath the surface. These knowledges provide effective strategy for the synthesis of Fe-N-doped carbon catalysts with higher ORR activities.},
 pages = {132--142},
 title = {Effect of nitrogen and iron in carbon nanowalls on oxygen reduction reaction},
 volume = {306},
 year = {2019}
}