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- W2904570841 abstract "Novel IrO2/Ti1−xWxO2 electrocatalysts for the oxygen evolution reaction (OER) in a solid polymer electrolyte (SPE) water electrolyzer were synthesized using the Adams fusion method and the evaporation-induced self-assembly method. Physical and chemical characterizations of the sample—including Brunauer–Emmett–Teller (BET) surface area analysis, X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy, and polarization curves for single cells—were performed. The W-doped TiO2 support with various doping amounts (0, 5, 10, and 20 at.%) exhibited a single-phase anatase structure and a large BET surface area. Furthermore, with annealing at a reducing atmosphere, a phase change from anatase to rutile occurred, trace α-W was precipitated from the crystal lattice of the Ti0.8W0.2O2 sample, and the BET surface area decreased accordingly. On the other hand, the conductivities of the W-doped support exhibited an increasing trend, indicating a significant impact of the W dopant on the enhancement of the TiO2 conductivity. The voltammetric charge of 40IrO2/Ti0.9W0.1O2 (1754 mC (cm2 mg)−1) was higher than that of unsupported IrO2, and 40IrO2/Ti0.9W0.1O2 exhibited enhanced electrochemical activity for the OER process. A single-cell performance of 1.79 V was achieved by using 80IrO2/Ti0.9W0.1O2 as an anode for the minimum charge-transfer resistance and ohmic resistance. Electrocatalysts with the Ti0.9W0.1O2 support exhibited good durability. Thus, Ti0.9W0.1O2 is a promising anode electrocatalyst support for SPE water electrolysis." @default.
- W2904570841 created "2018-12-22" @default.
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- W2904570841 date "2019-01-01" @default.
- W2904570841 modified "2023-09-29" @default.
- W2904570841 title "Synthesis and activities of IrO2/Ti1−xWxO2 electrocatalyst for oxygen evolution in solid polymer electrolyte water electrolyzer" @default.
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- W2904570841 doi "https://doi.org/10.1016/j.jelechem.2018.12.008" @default.
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