Yu Yang , Zhikun Xu , Tianle Li , Xinzhi Ma , Shuangyan Lin
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引用次数: 0
Abstract
The development of versatile oxygen evolution reaction (OER) electrocatalysts for ampere-level seawater electrolysis holds enormous promise for clean energy generation. Still, it is hindered by the competing chlorine evolution and severe chloride corrosion. Herein, the V and Fe dual-doped Ni3S2/Ni(OH)2 (VFe-Ni3S2/Ni(OH)2) heterostructure was fabricated on nickel foam as an OER catalyst for direct seawater electrolysis. The dual-doping of V and Fe optimizes the electronic structure cooperatively, improves conductivity, and enriches active sites of Ni3S2/Ni(OH)2, boosting OER performance at ampere-level current density. The optimal electrode V0.03Fe-Ni3S2/Ni(OH)2 requires only 385 mV overpotential to arrive 1 A/cm2 and works stably for over 100 h at 100 mA/cm2 in seawater electrolyte. The assembled electrolyzer V0.03Fe-Ni3S2/Ni(OH)2||Pt/C exhibited a cell voltage of 1.52 V at 10 mA/cm2 with a noteworthy stability of 100 h at 100 mA/cm2 for seawater electrolysis, providing huge potential for hydrogen production from seawater.
期刊介绍：
The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results.
Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)
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