物理化学学报 >> 2025, Vol. 41 >> Issue (7): 100079.doi: 10.1016/j.actphy.2025.100079

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利用Zn掺杂制备高效稳定工业级电解水的NiBP微球催化剂研究

DristySumiya Akter, HabibMd Ahasan, LinShusen, JoniMehedi Hasan, MandavkarRutuja, ChungYoung-Uk, NajibullahMd, LeeJihoon*()   

  1. Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, 01897, South Korea
  • 收稿日期:2024-12-19 修回日期:2025-03-07 录用日期:2025-03-07 发布日期:2025-05-22
  • 通讯作者: Email: jihoonlee@kw.ac.kr (Jihoon Lee)

Exploring Zn doped NiBP microspheres as efficient and stable electrocatalyst for industrial-scale water splitting

Sumiya Akter Dristy, Md Ahasan Habib, Shusen Lin, Mehedi Hasan Joni, Rutuja Mandavkar, Young-Uk Chung, Md Najibullah, Jihoon Lee*()   

  1. Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, 01897, South Korea
  • Received:2024-12-19 Revised:2025-03-07 Accepted:2025-03-07 Published:2025-05-22
  • Contact: Email: jihoonlee@kw.ac.kr (Jihoon Lee)
  • Supported by:
    the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education(RS-2018-NR031063); the Research Grant of Kwangwoon University in 2025

摘要:

在未来的能源系统中,绿氢具有巨大的应用潜力。设计非贵金属电催化剂对于电解水制氢至关重要,尤其是对于工业级电流密度电解水的实际应用。本文通过水热和电化学方法以及焙烧相结合的多步制备方法,制备得到Zn掺杂的NiBP微球电催化剂(Zn/NiBP)。该催化剂在1 mol∙L−1 KOH电解质溶液中,电流密度为100 mA∙cm−2,析氢反应(HER)和析氧反应(OER)的过电位分别为95 mV和280 mV,性能优于之前报道的大多数催化剂。当Zn/NiBP为双功能的阴极和阳极催化剂,在1 mol∙L−1 KOH溶液中,电流密度达到2000 mA∙cm−2,电解电压为3.10 V,优于Pt/C||RuO2催化剂体系的电解性能。对于Pt/C||Zn/NiBP组成的电解池体系,在1和6 mol∙L−1 KOH中,当电解电流密度达到2000 mA∙cm−2时,电解电压分别仅为2.50和2.30 V,表明该催化剂在实际的工业条件下具有优异的电解水性能。

关键词: 高电流, 锌掺杂, 产氢, 电催化剂, 混合电催化剂

Abstract:

Green hydrogen holds great promise for the future energy ecosystem and designing alternative electrocatalysts is essential for industrial-scale green hydrogen production for high-current water splitting under industrial conditions. Herein, the Zn-doped NiBP microsphere electrocatalyst is fabricated via a multi-step process combining hydrothermal and electrochemical approaches, followed by post-annealing. The optimized Zn/NiBP electrode outperforms the majority of previously reported catalysts, with low overpotentials of 95 mV for HER (hydrogen evolution reaction) and 280 mV for OER (oxygen evolution reaction) at 100 mA∙cm−2 in 1 mol∙L−1 KOH. The bifunctional Zn/NiBP||Zn/NiBP demonstrates a 3.10 V cell voltage at 2000 mA∙cm−2 in 1 mol∙L−1 KOH, surpassing the benchmark Pt/C||RuO2 systems. The Pt/C||Zn/NiBP hybrid system exhibits exceptionally low cell voltages of 2.50 and 2.30 V at 2000 mA∙cm−2 in 1 and 6 mol∙L−1 KOH respectively, demonstrating excellent overall water-splitting performance under challenging industrial conditions. Furthermore, the 2-E system shows remarkable stability over 120 hours at 1000 mA∙cm−2 in 1 and 6 mol∙L−1 KOH, indicating the robust anti-corrosion properties of the Zn/NiBP microspheres. Zn-doped NiBP microspheres exhibit enhanced electrochemical conductivity, active surface area and intrinsic electrocatalytic activity due to synergistic interactions among Zn, Ni, B and P, enabling rapid charge transfer and superior electrocatalytic performance for efficient hydrogen generation.

Key words: High current, Zn-doping, Hydrogen generation, Electrocatalyst, Hybrid electrocatalyst.