壳聚糖/硝酸铁凝胶制备铁氮掺杂多孔碳片作为高效氧还原电催化剂的研究
收稿日期: 2015-12-30
修回日期: 2016-03-15
网络出版日期: 2021-12-17
基金资助
基金委 优青 (21422108)资助
Chitosan/Nonahydrate Gel Derived Fe-N-Doped Porous Carbon Sheet as High-Efficient ORR Electrocatalyst
Received date: 2015-12-30
Revised date: 2016-03-15
Online published: 2021-12-17
孟凡陆 , 张新波 , 鄢俊敏 . 壳聚糖/硝酸铁凝胶制备铁氮掺杂多孔碳片作为高效氧还原电催化剂的研究[J]. 电化学, 2016 , 22(6) : 624 -630 . DOI: 10.13208/j.electrochem.151231
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.
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