Journal
JOURNAL OF POWER SOURCES
Volume 451, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.227808
Keywords
Oxygen reduction reaction; Self-templating; Heteroatoms-doping; Zn-O-2 battery
Funding
- National Key Research and Development Program of China [2016YFB0101202]
- National Natural Science Foundation of China [91534205, 21436003, 21576031, 21776023]
- Fundamental Research Funds for the Central Universities [2018CDXYHG0028, 2019CDXYHG0012]
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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 selftemplating 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.
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