首页|Oxygen reduction reaction performance of Fe-N-C catalyst with dual nitrogen source

Oxygen reduction reaction performance of Fe-N-C catalyst with dual nitrogen source

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Fe-N-C catalysts are potential substitutes to displace electrocatalysts containing noble chemical elements in the oxygen reduction reaction(ORR).However,their application is hampered by unsatisfactory activity and stability issues.The structures and morphologies of Fe-N-C catalysts have been found to be crucial for the number of active sites and local bonding structures.In this work,dicyandiamide(DCDA)and polyaniline(PANI)are shown to act as dual nitrogen sources to tune the morphology and structure of the catalyst and facilitate the ORR process.The dual nitrogen sources not only increase the amount of nitrogen doping atoms in the electrocatalytic Fe-C-N material,but also maintain a high nitrogen-pyrrole/nitrogen-graphitic:(N-P)/(N-G)value,improving the distribution density of catalytic active sites in the material.With a high surface area and amount of N-doping,the Fe-N-C catalyst developed can achieve an improved half-wave potential of 0.886 V(vs.RHE)in alkaline medium,and a better stability and methanol resistance than commercial Pt/C catalyst.

Fe-N-Coxygen reduction reactionnitrogen-dopeddual nitrogen source

Yuan Zhao、Quan Wang、Rongrong Hu、Wenqiang Liu、Xiaojuan Zhang、Wei Wang、Nicolas Alonso-Vante、Dongdong Zhu

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School of Materials Engineering,Jinling Institute of Technology,Nanjing 211169,China

School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

IC2MP,UMR-CNRS 7285,University of Poitiers,F-86073 Poitiers Cedex,France

Institute of Advanced Materials and Flexible Electronics,School of Chemistry and Materials Science,Nanjing University of Information Science and Technology,Nanjing 210044,China

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2024

10.1007/s11708-024-0956-2

能源前沿
高等教育出版社

能源前沿

CSTPCDEI
影响因子：0.2
ISSN：2095-1701
年,卷(期)：2024.18(6)