Corresponding Author

Jun-Min YAN(junminyan@jlu.edu.cn)


The chitosan/nonahydrate gel was used as a precursor to realize the uniform mixture of N-polymer and metal salt. After lyophilization treatment, the gel went through heat treatment and acid etch. Accordingly, the Fe-N-doped porous carbon sheet with homogenous composition and microstructure was prepared. Compared with the commercial Pt/C catalyst, the Fe-N-doped porous carbon sheet exhibited more positive onset potential and half-wave potential, higher current density, and especially, excellent durability. The power density of 318 mW·cm-2 was obtained in alkaline fuel cell with the Fe-N-doped porous carbon sheet as a cathode catalyst, which is higher than 267 mW·cm-2 with the Pt/C as a cathode catalyst. The improved cell perforence with the Fe-N-doped porous carbon sheet might be contributed to the atomicaly dispersed iron in chitosan, which results in the homogenous dispersion of Fe-N-C active site, high specific surface area and pore size distribution.

Graphical Abstract


Fe-N-doped porous carbon sheet, oxygen reduction reaction, gel, porous structure

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