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Coupling of NiFe Layered Double Hydroxides with Sulfides for Highly Efficient Urea Electrolysis and Hydrogen Evolution

Author

Listed:
  • Wenxian Liu

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Zhengguang Qin

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Xiaojing Dai

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Shibo Meng

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Xinxin Niu

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Wenhui Shi

    (Center for Membrane and Water Science & Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Fangfang Wu

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

  • Xiehong Cao

    (College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract

Urea electrolysis is regarded as a prospective method for energy-saving hydrogen production. However, the practical application of this technology is limited by the lack of high-performance bifunctional catalysts for hydrogen evolution reaction (HER) and urea oxidation reaction (UOR). Herein, a heterostructure catalyst composed of NiFe layered double hydroxide (LDH) and sulfides (NiFe LDH-NiFeS x /NF) catalysts is prepared via a simple one-step hydrothermal approach. Remarkably, the prepared NiFe LDH-NiFeS x /NF required 138 mV and 1.34 V to achieve 10 mA cm −2 for HER and UOR in 1 M KOH and 0.33 M urea, respectively. Furthermore, when NiFe LDH-NiFeS x /NF is used as a cathode for urea electrolysis, only 1.44 V is required at 10 mA cm −2 , which is much lower than the 1.53 V needed for overall water splitting.

Suggested Citation

  • Wenxian Liu & Zhengguang Qin & Xiaojing Dai & Shibo Meng & Xinxin Niu & Wenhui Shi & Fangfang Wu & Xiehong Cao, 2023. "Coupling of NiFe Layered Double Hydroxides with Sulfides for Highly Efficient Urea Electrolysis and Hydrogen Evolution," Energies, MDPI, vol. 16(3), pages 1-10, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1092-:d:1040646
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    References listed on IDEAS

    as
    1. Cheng Wang & Yibo Wang & Zhaoping Shi & Wenhua Luo & Junjie Ge & Wei Xing & Ge Sang & Changpeng Liu, 2022. "RuCo Alloy Nanoparticles Embedded into N-Doped Carbon for High Efficiency Hydrogen Evolution Electrocatalyst," Energies, MDPI, vol. 15(8), pages 1-13, April.
    2. Shaik Gouse Peera & Ravindranadh Koutavarapu & Chao Liu & Gaddam Rajeshkhanna & Arunchander Asokan & Ch. Venkata Reddy, 2021. "Cobalt Nanoparticle-Embedded Nitrogen-Doped Carbon Catalyst Derived from a Solid-State Metal-Organic Framework Complex for OER and HER Electrocatalysis," Energies, MDPI, vol. 14(5), pages 1-14, March.
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