Citation: Gang Zhao, Wenbo Liao, Lan Mu, Baojie Zhang, Ning Zhao, Tianyong Zhang, Xijin Xu. High-performance bifunctional electrocatalyst (NiFe-LDH/MoNi₄) with enhanced chloride corrosion resistance for achieving seawater overall-splitting at industrial temperature[J]. Chinese Chemical Letters, ;2026, 37(5): 111825. doi: 10.1016/j.cclet.2025.111825 shu

High-performance bifunctional electrocatalyst (NiFe-LDH/MoNi₄) with enhanced chloride corrosion resistance for achieving seawater overall-splitting at industrial temperature

Gang Zhao ^{a, 1,*,} ,
Wenbo Liao ^{a, 1} ,
Lan Mu ^a ,
Baojie Zhang ^b ,
Ning Zhao ^a ,
Tianyong Zhang ^c ,
Xijin Xu ^{a, *,}

a.
School of Physics and Technology, University of Jinan, Ji'nan 250022, China
b.
School of Chemistry and Chemical Engineering, Shandong University, Ji'nan 250100, China
c.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

sps_zhaog@ujn.edu.cn

sps_xuxj@ujn.edu.cn

Received Date: 20 December 2024
Revised Date: 10 September 2025
Accepted Date: 10 September 2025
Available Online: 11 September 2025

Figures(4)

Nickel-iron double hydroxides are corroded by Cl⁻ during seawater electrolysis, which reduces their catalytic activity and stability. Here, a high-performance bifunctional electrocatalyst (NiFe-LDH/MoNi₄) with enhanced chloride corrosion resistance was synthesized. In the OER process, Mo element in the catalyst was reconstructed to form MoO₄²⁻, which repelled Cl⁻ to prevent the catalyst from being corroded. Besides, the heterostructure of NiFe-LDH/MoNi₄ decreased the reduction of HER active site during HER process (Mo element dissolves easily in alkaline media due to thermodynamic instability). Therefore, based on in-situ self-reconstruction of Mo element and heterostructure in alkaline seawater, NiFe-LDH/MoNi₄ delivered a current density of 10 mA/cm² for the HER (OER) at industrial temperatures (80 ℃) with an overpotential of merely 32 mV (139 mV). Additionally, when NiFe-LDH/MoNi₄ is employed as both the anode and cathode, a battery voltage of just 1.39 V (3.13 V) is sufficient to attain a current density of 10 mA/cm² (1 A/cm²). The system is also capable of sustained operation at a high current density of 500 mA/cm² for a period of 50 h.
- Seawater electrolysis,
- Chloride corrosion resistance,
- Bifunctional electrocatalyst,
- Industrial temperature,
- High current density
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

High-performance bifunctional electrocatalyst (NiFe-LDH/MoNi4) with enhanced chloride corrosion resistance for achieving seawater overall-splitting at industrial temperature

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通讯作者: 陈斌, bchen63@163.com

High-performance bifunctional electrocatalyst (NiFe-LDH/MoNi₄) with enhanced chloride corrosion resistance for achieving seawater overall-splitting at industrial temperature