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- W3044290512 abstract "The low durability of carbon-based non-precious metal electrocatalysts hinders their practical applications in proton exchange membrane fuel cells (PEMFCs). In this study, we rationally design a hybrid Pt-Fe-N-C electrocatalyst with unprecedented durability. It consists of abundant Pt and Fe single atoms homogeneously dispersed on the nitrogen-doped carbon support and a small amount of Pt-Fe alloy nanoparticles. A PEMFC with Pt-Fe-N-C as the cathode shows a larger peak power density (0.75 W cm−2) than that with Fe-N-C as the cathode (0.50 W cm−2). The remarkable durability of Pt-Fe-N-C is reflected from no noticeable drop in the half-wave potential after 70000 potential cycles between 0.6 and 1.0 V in the liquid cell, and 80% current retention after 85 h of potential hold at 0.4 V in the fuel cell. This work demonstrates the feasibility of improving the durability of Fe-N-C material via ultra-low Pt doping and makes non-precious metal electrocatalysts be close to achieving commercial metrics." @default.
- W3044290512 created "2020-07-29" @default.
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- W3044290512 date "2020-11-01" @default.
- W3044290512 modified "2023-10-15" @default.
- W3044290512 title "Durable hybrid electrocatalysts for proton exchange membrane fuel cells" @default.
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- W3044290512 doi "https://doi.org/10.1016/j.nanoen.2020.105192" @default.
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