Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 88, Issue -, Pages 19-23Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2018.01.011
Keywords
CeO2; H2O2; Fe/N/C catalyst; Durability/stability; Oxygen reduction reaction
Categories
Funding
- National Key RD Plan of China [2016YFB0101308]
- National Natural Science Foundation of China [21476104, 21676135, 21506041]
- National Scientific Instrument Develop Major Project of National Natural Science Foundation of China [51627810]
- Joint Funds of the National Natural Science Foundation and Liaoning of China [U1508202]
- Natural Science Foundation for Distinguished Young Scholars of Jiangsu Province [BK20150009]
- Jiangsu Province Natural Science Foundation [BK20150396]
- PAPD of Jiangsu Higher Education Institutions
- Six Talent Peaks Program of Jiangsu Province
- Fundamental Research Funds for the Central Universities, China
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The poor durability/stability of non-precious metal catalysts (NPMCs) hampers their substitution for Pt-based catalysts. Here, phenylenediamine-based Fe/N/C catalysts modified with CeO2 were synthesized by a hydrothermal method to eliminate hydrogen peroxide (H2O2), thereby improving the durability/stability of the catalyst. Oxygen reduction reaction (ORR) and catalytic durability/stability were evaluated by linear sweep voltammetry and accelerated durability tests (ADTs). The results show that the yield of H2O2 evaluated by rotating ring disk electrode (RRDE) measurement decreased obviously when the CeO2 mass ratio in catalyst is optimal. The loss of current density at 0.8 V of catalyst with 6 wt% CeO2 and catalyst without CeO2 were 51.1% and 91.5%, respectively. The addition of CeO2 can improve the durability/stability of Fe/N/C catalysts obviously due to the elimination of H2O2 during ORR.
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