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<p>In hydrogen isotope storage materials crucial for achieving controllable nuclear fusion fuel supply, ZrCo alloys have become a promising candidate material due to their excellent performance. However, their hydrogenation kinetics are highly affected by gas impurities, particularly carbon monoxide (CO). In this work, by depositing a Pd film on the surface of Zr<sub>0.8</sub>Ti<sub>0.2</sub>Co and ZrCo alloy particles, the hydrogen absorption kinetics and cyclic stability of the alloy in different H<sub>2</sub>/CO mixed atmospheres were systematically investigated. The changes in the microstructure and morphology of the samples during the cycling process were analyzed and discussed through various characterization methods and kinetic models. The poisoning effect of CO on Zr<sub>0.8</sub>Ti<sub>0.2</sub>Co alloy and the reasons for the improvement of sample detoxification performance and cycling stability by palladium film coating were analyzed. This work introduces a novel strategy for improving the poisoning resistance of ZrCo-based hydrogen isotope storage alloys.</p>

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Pd-coated ZrCo and Zr0.8Ti0.2Co alloys with core–shell structures: A replacement plating method for superior CO resistance

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Heping Sun,
  • Minan Su,
  • Rongxing Ye,
  • Linsen Zhou,
  • Yong Yao,
  • Jiangfeng Song,
  • Meng Zhou,
  • Yi Zhang

摘要

In hydrogen isotope storage materials crucial for achieving controllable nuclear fusion fuel supply, ZrCo alloys have become a promising candidate material due to their excellent performance. However, their hydrogenation kinetics are highly affected by gas impurities, particularly carbon monoxide (CO). In this work, by depositing a Pd film on the surface of Zr0.8Ti0.2Co and ZrCo alloy particles, the hydrogen absorption kinetics and cyclic stability of the alloy in different H2/CO mixed atmospheres were systematically investigated. The changes in the microstructure and morphology of the samples during the cycling process were analyzed and discussed through various characterization methods and kinetic models. The poisoning effect of CO on Zr0.8Ti0.2Co alloy and the reasons for the improvement of sample detoxification performance and cycling stability by palladium film coating were analyzed. This work introduces a novel strategy for improving the poisoning resistance of ZrCo-based hydrogen isotope storage alloys.