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Interwoven N-doped carbon nanotubes with capped Ni-doped FeP as double-functional electrocatalysts for overall seawater electrolysis

封装有Ni掺杂FeP纳米颗粒的氮掺杂碳纳米管作为双 功能电催化剂

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Abstract

Seawater electrolysis technology powered by clean new energy is recognized as the most promising sustainable and green hydrogen preparation method. The extremely expensive and low reserve of commercially available noble metal electrocatalysts and the rapid inactivation of catalysts under complex ionic environments hamper their industrialization. Herein, a novel interwoven N-doped carbon nanotube (N-CNTs) structure capped with Ni-doped FeP nanoparticles (NFP@NC) is successfully developed by Ni-doped Fe cluster-catalyzed CNT growth process and the gas phosphating method. The unique interwoven nanotube network and strong interaction of Ni-doped FeP and N-CNTs provide fast mass transfer and gas bubble emission, as well as drastically enhanced stability. The NFP@NC presents an overpotential of 280 mV for the oxygen evolution reaction and 206 mV for the hydrogen evolution reaction at 10 mA cm−2, lower than most reported iron-based catalysts. This research provides an effective way to construct interwoven CNT networks as high-performance bifunctional seawater electrolysis catalysts.

摘要

清洁能源支撑的电解海水技术是公认的最有前途的未来可持续 绿色制氢途径. 商用贵金属催化剂储量低、成本昂贵, 且在复杂离子环 境下容易快速失活的特性, 严重阻碍了电解海水技术的工业化发展. 本 工作通过Ni掺杂Fe团簇催化碳纳米管生长, 再气体磷化法, 成功构建了 一种含Ni 掺杂FeP 纳米颗粒封端的新型氮掺杂碳纳米管交织结构 (NFP@NC). 独特的N-CNTs交织网络, 以及N-CNTs和Ni掺杂FeP的** 相互作用提供了快速的传质途径, 提高了气体逸出效率, 并显著增**了 催化剂稳定性. NFP@NC在10 mA cm−2 的电流密度下的析氧反应过电 位为280 mV, 析氢反应过电位为206 mV, 低于大多数报道的铁基催化 剂. 本研究为构建交织的碳纳米管网络和制备高性能双功能海水电解 催化剂提供了一种有效的途径.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (52272222 and 52072197), the Outstanding Youth Foundation of Shandong Province, China (ZR2019JQ14), the Youth Innovation and Technology Foundation of Shandong Higher Education Institutions, China (2019KJC004), the Natural Science Foundation of Shandong Province, China (ZR2021MB061), the Major Scientific and Technological Innovation Project (2019JZZY020405), Taishan Scholar Young Talent Program (tsqn201909114), and the Major Basic Research Program of Natural Science Foundation of Shandong Province (ZR2020ZD09).

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  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Key Laboratory of Eco-chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, China

    Han Zhang  (张含), Yonglong Wang  (王勇龙), Bo Zhang  (张波), Shulei Zhang  (张述磊), Yiru Ma  (马艺茹), Zexing Wu  (吴则星), Fusheng Liu  (刘福胜), Zhenyu **ao  (肖振宇) & Lei Wang  (王磊)

  2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

    Han Zhang  (张含), Yonglong Wang  (王勇龙), Bo Zhang  (张波), Shulei Zhang  (张述磊), Yiru Ma  (马艺茹), Zexing Wu  (吴则星), Zhenyu **ao  (肖振宇) & Lei Wang  (王磊)

  3. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

    Fusheng Liu  (刘福胜)

  4. School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252059, China

    Yu**g Zhu  (朱玉静)

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Contributions

Author contributions Zhang H and Wang Y conducted the experiments, analyzed the data, and prepared the manuscript. Zhang B, Zhang S, Ma Y, and Wu Z analyzed and discussed the data. Zhu Y and Liu F commented on the manuscript. **ao Z revised the paper and directed the entire research. Wang L conducted the writing and editing. The project was supervised by Wang L and **ao Z. All authors contributed to the general discussion.

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Correspondence to Zhenyu **ao  (肖振宇) or Lei Wang  (王磊).

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Supplementary information Experimental details and supporting data are available in the online version of the paper.

Han Zhang is currently a Master’s candidate at Qingdao University of Science and Technology. She received her BS degree from Qingdao University of Science and Technology (2021). Her research focuses on the design and synthesis of MOF-derived materials in electrocatalysis.

Yonglong Wang is currently a Master candidate at Qingdao University of Science and Technology. He received his BS degree from Liaocheng University (2020). His research interests focus on the design and synthesis of MOF-derived materials for seawater splitting.

Zhenyu **ao was awarded a PhD degree by China University of Petroleum (East China) in 2017 under the supervision of Prof. Daofeng Sun. He is currently an associate professor at Qingdao University of Science and Technology. His research interests mainly focus on MOF materials, nanomaterials, supercapacitors, and electrocatalysis.

Lei Wang was awarded a PhD degree in chemistry by Jilin University in 2006 under the supervision of Prof. Shouhua Feng. He moved to the State Key Laboratory of Crystal Materials, Shandong University, as a postdoctoral scholar from 2008 to 2010. He is currently a professor of chemistry at Qingdao University of Science and Technology. His research interests mainly focus on the design and synthesis of functional organic-inorganic hybrids and porous MOF materials, as well as their applications in photocatalysis, electrocatalysis, lithium-ion batteries, etc.

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Interwoven N-doped carbon nanotubes with capped Ni-doped FeP as double-functional electrocatalysts for overall seawater electrolysis

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Zhang, H., Wang, Y., Zhang, B. et al. Interwoven N-doped carbon nanotubes with capped Ni-doped FeP as double-functional electrocatalysts for overall seawater electrolysis. Sci. China Mater. 66, 4630–4638 (2023). https://doi.org/10.1007/s40843-023-2608-6

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