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- W4306630523 abstract "Yttrium stabilized zirconia (YSZ) as a typical oxygen ionic conductor has been widely used as the electrolyte for solid oxide fuel cell (SOFC) at the temperature higher than 1000 °C, but its poor ionic conductivity at lower temperature (500–800 °C) limits SOFC commercialization. Compared with oxide ionic transport, protons conduction are more transportable at low temperatures due to lower activation energy, which delivered enormous potential in the low-temperature SOFC application. In order to increase the proton conductivity of YSZ-based electrolyte, we introduced semiconductor ZnO into YSZ electrolyte layer to construct heterointerface between semiconductor and ionic conductor. Study results revealed that the heterointerface between ZnO and YSZ provided a large number of oxygen vacancies. When the mass ratio of YSZ to ZnO was 5:5, the fuel cell achieved the best performance. The maximum power density (P max ) of this fuel cell achieved 721 mW cm −2 at 550 °C, whereas the P max of the fuel cell with pure YSZ electrolyte was only 290 mW cm −2 . Further investigation revealed that this composite electrolyte possessed poor O 2− conductivity but good proton conductivity of 0.047 S cm −1 at 550 °C. The ionic conduction activation energy of 5YSZ-5ZnO composite in fuel cell atmosphere was only 0.62 eV. This work provides an alternative way to improve the ionic conductivity of YSZ-based electrolytes at low operating temperatures." @default.
- W4306630523 created "2022-10-18" @default.
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- W4306630523 date "2023-02-01" @default.
- W4306630523 modified "2023-10-18" @default.
- W4306630523 title "Efficiently enhance the proton conductivity of YSZ-based electrolyte for low temperature solid oxide fuel cell" @default.
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- W4306630523 doi "https://doi.org/10.1016/j.ceramint.2022.10.181" @default.
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