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Isotope engineering achieved by local coordination design in Ti-Pd co-doped ZrCo-based alloys

Author

Listed:
  • Jiacheng Qi

    (Zhejiang University)

  • Xu Huang

    (China Academy of Engineering Physics)

  • Xuezhang Xiao

    (Zhejiang University
    Key Laboratory of Hydrogen Storage and Transportation Technology of Zhejiang Province)

  • Xinyi Zhang

    (Zhejiang University)

  • Panpan Zhou

    (Zhejiang University)

  • Shuoqing Zhang

    (Zhejiang University)

  • Ruhong Li

    (Zhejiang University)

  • Huaqin Kou

    (China Academy of Engineering Physics)

  • Fei Jiang

    (China Academy of Engineering Physics)

  • Yong Yao

    (China Academy of Engineering Physics)

  • Jiangfeng Song

    (China Academy of Engineering Physics)

  • Xingwen Feng

    (China Academy of Engineering Physics)

  • Yan Shi

    (China Academy of Engineering Physics)

  • Wenhua Luo

    (China Academy of Engineering Physics)

  • Lixin Chen

    (Zhejiang University)

Abstract

Deuterium/Tritium (D/T) handling in defined proportions are pivotal to maintain steady-state operation for fusion reactors. However, the hydrogen isotope effect in metal-hydrogen systems always disturbs precise D/T ratio control. Here, we reveal the dominance of kinetic isotope effect during desorption. To reconcile the thermodynamic stability and isotope effect, we demonstrate a quantitative indicator of Tgap and further a local coordination design strategy that comprises thermodynamic destabilization with vibration enhancement of interstitial isotopes for isotope engineering. Based on theoretical screening analysis, an optimized Ti-Pd co-doped Zr0.8Ti0.2Co0.8Pd0.2 alloy is designed and prepared. Compared to ZrCo alloy, the optimal alloy enables consistent isotope delivery together with a three-fold lower Tgap, a five-fold lower energy barrier difference, a one-third lower isotopic composition deviation during desorption and an over two-fold higher cycling capacity. This work provides insights into the interaction between alloy and hydrogen isotopes, thus opening up feasible approaches to support high-performance fusion reactors.

Suggested Citation

  • Jiacheng Qi & Xu Huang & Xuezhang Xiao & Xinyi Zhang & Panpan Zhou & Shuoqing Zhang & Ruhong Li & Huaqin Kou & Fei Jiang & Yong Yao & Jiangfeng Song & Xingwen Feng & Yan Shi & Wenhua Luo & Lixin Chen, 2024. "Isotope engineering achieved by local coordination design in Ti-Pd co-doped ZrCo-based alloys," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47250-3
    DOI: 10.1038/s41467-024-47250-3
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    References listed on IDEAS

    as
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    2. Qingqing Yan & Jing Wang & Linda Zhang & Jiaqi Liu & Mohammad Wahiduzzaman & Nana Yan & Liang Yu & Romain Dupuis & Hao Wang & Guillaume Maurin & Michael Hirscher & Peng Guo & Sujing Wang & Jiangfeng D, 2023. "A squarate-pillared titanium oxide quantum sieve towards practical hydrogen isotope separation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    3. Yao, Zhendong & Liang, Zhaoqing & Xiao, Xuezhang & Qi, Jiacheng & He, Jiahuan & Huang, Xu & Kou, Huaqin & Luo, Wenhua & Chen, Changan & Chen, Lixin, 2022. "Achieving excellent cycle stability in Zr–Nb–Co–Ni based hydrogen isotope storage alloys by controllable phase transformation reaction," Renewable Energy, Elsevier, vol. 187(C), pages 500-507.
    4. R. Juarez & G. Pedroche & M. J. Loughlin & R. Pampin & P. Martinez & M. Pietri & J. Alguacil & F. Ogando & P. Sauvan & A. J. Lopez-Revelles & A. Kolšek & E. Polunovskiy & M. Fabbri & J. Sanz, 2021. "A full and heterogeneous model of the ITER tokamak for comprehensive nuclear analyses," Nature Energy, Nature, vol. 6(2), pages 150-157, February.
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