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- W3204523560 abstract "The oxygen reduction reaction (ORR) efficiency of direct methanol fuel cell (DMFC) is of great significance. In this work, MnO2 supported on CeO2-QDs (CeO2[email protected]2) and CeO2-QDs supported on MnO2 (MnO2@CeO2-QDs) composite with different loading method were synthesized to investigate the role of CeO2 for ORR, according to the excellent oxygen adsorption and oxygen ion conductivity of CeO2 quantum dots (CeO2-QDs). A passive DMFC was assembled by CeO2[email protected]2 or MnO2@CeO2-QDs as cathodic catalyst and PtRu/C as anodic catalyst. The maximum power densities for CeO2[email protected]2 and MnO2@CeO2-QDs-based DMFCs were 9.4 and 7.8 mW·cm−2, while 8.5 and 7.0 mW·cm−2 for air-breathing DMFCs, respectively. CeO2[email protected]2 showed a more superior ORR activity and stability in the high discharge currents especially for air-breathing DMFCs. The temporary storage and timely replenishment mechanism of oxygen in CeO2[email protected]2 catalyst could significantly enhance the ORR efficiency at cathode. This work developed a new thought about the loading method of CeO2 on the ORR catalytic activity for CeO2/MnO2 catalysts." @default.
- W3204523560 created "2021-10-11" @default.
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- W3204523560 date "2021-10-01" @default.
- W3204523560 modified "2023-10-16" @default.
- W3204523560 title "Evolution of oxygen reduction property by the role of CeO2 in CeO2/MnO2 cathode catalyst for passive direct methanol fuel cells" @default.
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- W3204523560 doi "https://doi.org/10.1016/j.apcata.2021.118378" @default.
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