Impact of heat treatment temperature of novel catalyst MnO x @Sm 2 O 2 CO 3 for promoting oxygen reduction reaction
International Journal of Hydrogen Energy, ISSN: 0360-3199, Vol: 51, Page: 169-179
2024
- 2Citations
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Review Description
Exploring the high activity of non-precious metal electrocatalysts for the oxygen reduction reaction (ORR) is necessary to reduce the cost of commercial application of fuel cells. In this work, MnO@Sm 2 O 2 CO 3 (MnO@SOC) nanosheets with abundant oxygen vacancies were synthesized by solvothermal method. The nanosheets showed the best ORR performance in 0.1 M KOH solution after annealing at 500 °C. In electron paramagnetic resonance (EPR) results reveal that annealing reduces the number of oxygen vacancies in the catalyst, increases the lattice oxygen, further enhances the ability of transition metals to combine with oxygen atoms during the reaction. Meanwhile, the support Sm 2 O 2 CO 3 is beneficial to accelerate the breaking of O–O bond, thus promoting the complete reduction of O 2 in the electrocatalytic reaction. This work enriches the family of lanthanide metal catalysts and provides a new strategy for the design and improvement of heterogeneous catalysts.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0360319923040867; http://dx.doi.org/10.1016/j.ijhydene.2023.08.106; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85168728722&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0360319923040867; https://dx.doi.org/10.1016/j.ijhydene.2023.08.106
Elsevier BV
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