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Phytic acid-assisted self-templating synthesis of N-P-Fe-tridoped hierarchical porous carbon for efficient oxygen reduction reaction.
- Source :
-
Journal of Power Sources . Mar2020, Vol. 451, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Developing efficient, stable and non-precious metal alternatives to platinum-based catalysts for oxygen reduction reaction (ORR) is significant for many energy conversion devices. Herein, we report a phytic acid-assisted self-templating strategy to fabricate N–P–Fe-tridoped carbon with a hierarchical porosity. The resultant unique structures and well-designed heteroatoms-doping condition impart final catalysts with enhanced mass transfer ability and abundant available active-sites, ensuring high performance in catalyzing ORR. Impressively, the half wave potential of the optimal catalyst is 0.926 V (vs. RHE), which is 40 mV higher than the state-of-art platinum-based catalyst and better than most reported ORR catalysts. Significantly, when applied to a primary Zn–O 2 battery, our catalyst comprehensively outperforms the commercial Pt/C catalyst whether on power density or specific capacity. • The P-Fe-NC catalyst was fabricated by a self-templating strategy. • Doping condition was well-designed through a facile coordination strategy. • Superior ORR and Zn–O 2 battery performance than precious metal catalysts. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 451
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 141904554
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2020.227808