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Self-powered H2 production with bifunctional hydrazine as sole consumable

Author

Listed:
  • Xijun Liu

    (Tianjin University of Technology)

  • Jia He

    (Tianjin University of Technology)

  • Shunzheng Zhao

    (University of Science and Technology Beijing)

  • Yunpeng Liu

    (Chinese Academy of Sciences)

  • Zhe Zhao

    (Tianjin University of Technology)

  • Jun Luo

    (Tianjin University of Technology)

  • Guangzhi Hu

    (Chinese Academy of Sciences)

  • Xiaoming Sun

    (Beijing University of Chemical Technology)

  • Yi Ding

    (Tianjin University of Technology)

Abstract

Splitting hydrazine into H2 and N2 by electro-catalyzing hydrogen evolution and hydrazine oxidation reactions is promising for replacing fossil energy with H2. However, current hydrazine splitting is achieved using external powers to drive the two reactions, which is inapplicable to outdoor use. Here, Fe-doped CoS2 nanosheets are developed as a bifunctional electrocatalyst for the two reactions, by which direct hydrazine fuel cells and overall-hydrazine-splitting units are realized and integrated to form a self-powered H2 production system. Without external powers, this system employs hydrazine bifunctionally as the fuel of direct hydrazine fuel cell and the splitting target, namely a sole consumable, and exhibits an H2 evolution rate of 9.95 mmol h−1, a 98% Faradaic efficiency and a 20-h stability, all comparable to the best reported for self-powered water splitting. These performances are due to that Fe doping decreases the free-energy changes of H adsorption and adsorbed NH2NH2 dehydrogenation on CoS2.

Suggested Citation

  • Xijun Liu & Jia He & Shunzheng Zhao & Yunpeng Liu & Zhe Zhao & Jun Luo & Guangzhi Hu & Xiaoming Sun & Yi Ding, 2018. "Self-powered H2 production with bifunctional hydrazine as sole consumable," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06815-9
    DOI: 10.1038/s41467-018-06815-9
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    Cited by:

    1. Libo Zhu & Jian Huang & Ge Meng & Tiantian Wu & Chang Chen & Han Tian & Yafeng Chen & Fantao Kong & Ziwei Chang & Xiangzhi Cui & Jianlin Shi, 2023. "Active site recovery and N-N bond breakage during hydrazine oxidation boosting the electrochemical hydrogen production," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Dong Cao & Haoxiang Xu & Hongliang Li & Chen Feng & Jie Zeng & Daojian Cheng, 2022. "Volcano-type relationship between oxidation states and catalytic activity of single-atom catalysts towards hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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