期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 34, 页码 28664-28671出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b09074
关键词
iron-phthalocyanine; one-pot synthesis; non-noble metal catalyst; cathode electrocatalyst; oxygen reduction reaction; alkaline polymer fuel cells
资金
- Natural Science Foundation of China [21633008, 21673163, 21606149]
- Shanghai Rising-Star Program (B type) [18QB1404400]
- ARC [CE170100026]
Recent progress in anion-exchange membranes has evoked increasing interests in alkaline polymer fuel cells (APFCs). A large body of recent research has demonstrated attractive activity of Fe-N macrocycle complexes as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline media. To be a substitute for Pt in APFCs, however, most of the macrocycle molecules remain largely unsatisfactory in both of the catalytic activity and durability. Herein, we show that a one-pot microwave conjugation results in a polymerized ironphthalocyanine (pFePc) which exhibits extremely high ORR performance, showing activity much better than that of the FePc monomer and 20 wt % Pt/C, and similar to that of the 60 wt % Pt/C under the same catalyst loading. Furthermore, we proposed an edge-closing strategy to significantly enhance the stability of the pFePc catalyst in alkaline media by eliminating the edge anhydride groups. Using the edge-closed pFePc as the cathode catalyst in APFC, a power density as high as 452 mW.cm(-2) is non-noble metal catalyst-based APFCs so far reported.
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