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Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
Published on: November 15, 2016
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Dual B and Fe doping boosts seawater oxidation on a Co3O4 nanoarray.
Yuchun Ren1,2, Xinxin Li1, Xiaomei Sun2
1College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China. xpsun@uestc.edu.cn.
Chemical Communications (Cambridge, England)
|November 7, 2025
Summary
Dual-doped cobalt oxide (B,Fe-Co3O4/NF) efficiently produces green hydrogen from seawater. This enhanced anode material offers superior durability and reduced chlorine byproduct generation for industrial applications.
Area of Science:
- Electrochemistry
- Materials Science
- Green Chemistry
Background:
- Direct seawater electrolysis is crucial for green hydrogen production.
- Anode corrosion due to competing chlorine and oxygen evolution reactions limits durability.
- Developing stable electrocatalysts for seawater oxidation is essential.
Purpose of the Study:
- To enhance the activity and durability of cobalt oxide nanoarrays for alkaline seawater oxidation.
- To investigate the synergistic effects of Boron (B) and Iron (Fe) dual doping on Co3O4 nanoarrays supported on nickel foam (B,Fe-Co3O4/NF).
Main Methods:
- Synthesis of B,Fe-Co3O4 nanoarrays on nickel foam.
- Electrochemical characterization of the catalyst's performance in alkaline seawater.
- Durability testing at industrial-scale current densities.
Main Results:
- B,Fe-Co3O4/NF exhibited low overpotential (342 mV at 1000 mA cm-2).
- The catalyst demonstrated stable operation for 500 hours with negligible degradation.
- Minimal active chlorine generation was observed during long-term operation.
Conclusions:
- B,Fe dual doping effectively enhances the electrocatalytic activity and durability of Co3O4 for seawater oxidation.
- Borate anion formation from B doping aids in chloride ion repulsion, mitigating corrosion.
- The developed catalyst shows significant potential for industrial green hydrogen production from seawater.
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