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- W4308458320 abstract "• Providing a highly active and stable PdPt catalysts with unique porous structure. • Designing correlative methodology including ADT, IL-imaging, in situ XAFS, MP-AES and DFT calculations. • Tracing dynamic structural evolution of PdPt alloy during electrochemical degradation in both theory and experiment. • Establishing an accurate structure-performance relationship of PdPt catalysts under ORR reaction conditions. Proton exchange membrane fuel cells require oxygen reduction catalysts with high activity and stability. Pt based alloy materials are most widely applied ORR catalyst due to its high intrinsic activity, but usually suffer from rapid deactivation as a result of particle agglomeration, detachment, Ostwald ripening and/or Pt dissolution. Here we investigate the degradation of the PdPt alloys via in situ X-ray absorption fine structure, Δ μ analysis, identical location-electron microscopy and DFT calculations. We conclude that the origin of high activity and stability of the PdPt catalyst stems from the oxidation resistance of metallic Pt, forming mainly surface adsorbed O species at high potentials. Two stage degradation process are observed, showing an evolution of dynamic surface dependent ORR performance along with the deactivation process. The careful design of Pt alloy structure leads to controlled surface oxygen behaviours. This opens a new way to increase the lifespan of fuel cells and improve the Pt utilization efficiency." @default.
- W4308458320 created "2022-11-12" @default.
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- W4308458320 date "2022-12-01" @default.
- W4308458320 modified "2023-10-12" @default.
- W4308458320 title "Improving the ORR performance by enhancing the Pt oxidation resistance" @default.
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- W4308458320 cites W1964690210 @default.
- W4308458320 cites W1966942617 @default.
- W4308458320 cites W1970127494 @default.
- W4308458320 cites W1973891115 @default.
- W4308458320 cites W1975269412 @default.
- W4308458320 cites W1979166837 @default.
- W4308458320 cites W1979544533 @default.
- W4308458320 cites W1979584177 @default.
- W4308458320 cites W1981368803 @default.
- W4308458320 cites W1983453045 @default.
- W4308458320 cites W1984500458 @default.
- W4308458320 cites W1988457545 @default.
- W4308458320 cites W1992149671 @default.
- W4308458320 cites W1999566663 @default.
- W4308458320 cites W2000428049 @default.
- W4308458320 cites W2004742529 @default.
- W4308458320 cites W2007395042 @default.
- W4308458320 cites W2012772134 @default.
- W4308458320 cites W2014247540 @default.
- W4308458320 cites W2020287422 @default.
- W4308458320 cites W2022956627 @default.
- W4308458320 cites W2026864740 @default.
- W4308458320 cites W2029952112 @default.
- W4308458320 cites W2030497684 @default.
- W4308458320 cites W2039231918 @default.
- W4308458320 cites W2044528002 @default.
- W4308458320 cites W2045481240 @default.
- W4308458320 cites W2047391560 @default.
- W4308458320 cites W2049918641 @default.
- W4308458320 cites W2068035701 @default.
- W4308458320 cites W2068896817 @default.
- W4308458320 cites W2070227796 @default.
- W4308458320 cites W2073872893 @default.
- W4308458320 cites W2075449376 @default.
- W4308458320 cites W2083501275 @default.
- W4308458320 cites W2087548575 @default.
- W4308458320 cites W2087935983 @default.
- W4308458320 cites W2088043604 @default.
- W4308458320 cites W2091775405 @default.
- W4308458320 cites W2092349140 @default.
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- W4308458320 cites W2126954122 @default.
- W4308458320 cites W2160248419 @default.
- W4308458320 cites W2161410708 @default.
- W4308458320 cites W2161649560 @default.
- W4308458320 cites W2165571442 @default.
- W4308458320 cites W2211635962 @default.
- W4308458320 cites W2230728100 @default.
- W4308458320 cites W2322232911 @default.
- W4308458320 cites W2332015053 @default.
- W4308458320 cites W2333674323 @default.
- W4308458320 cites W2554421598 @default.
- W4308458320 cites W2564214658 @default.
- W4308458320 cites W2573377826 @default.
- W4308458320 cites W2736193776 @default.
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- W4308458320 cites W2804008925 @default.
- W4308458320 cites W2870211584 @default.
- W4308458320 cites W2896096281 @default.
- W4308458320 cites W2900201798 @default.
- W4308458320 cites W2901462587 @default.
- W4308458320 cites W2906290050 @default.
- W4308458320 cites W2961575260 @default.
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- W4308458320 doi "https://doi.org/10.1016/j.jcat.2022.10.025" @default.
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