Monolithic Ni-Mo-B Bifunctional Electrode for Large Current Water Splitting

Liu Huixiang; Li Xuanyang; Chen LuluZhu XiaodongDong PeiChee Mason Oliver LamYe MingxinGuo YanhuiShen Jianfeng

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Monolithic Ni-Mo-B Bifunctional Electrode for Large Current Water Splitting

机译：Monolithic Ni-Mo-B Bifunctional Electrode for Large Current Water Splitting

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Screening and developing highly efficient electrodes is key to large-scale water electrolysis. The practical industrial electrode should fulfill several criteria of high activity, structural stability, and fast bubble evolution at a large current density. In this study, a novel monolithic 3D hollow foam electrode that can achieve the requirements of large current density water electrolysis is developed and fabricated through a simple electroless plating-calcination strategy. This strong 3D Ni-Mo-B hollow foam electrode can withstand a pressure of 2.37 MPa and exhibits high electrochemical surface area, high conductivity, and low gas transfer resistance, drastically boosting its catalytic performance. It affords 50 mA cm(-2) at overpotentials of only 68 mV for hydrogen evolution reaction and 293 mV for oxygen evolution reaction and can survive at a large current density of 5 A cm(-2) while maintaining its structure and performance in 1.0 m KOH. The advantages of facile preparation, high mechanical strength, high gas mass transfer ability, and excellent performance enable this structure to be a potential electrode, active substrate, or 3D catalyst in many fields.

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来源
《Advanced functional materials》 |2022年第4期|2107308.1-2107308.10|共10页
作者
Liu Huixiang; Li Xuanyang; Chen LuluZhu XiaodongDong PeiChee Mason Oliver LamYe MingxinGuo YanhuiShen Jianfeng;
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作者单位

Fudan Univ, Inst Special Mat & Technol, Shanghai 200433, Peoples R China|Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China;

Fudan Univ, Inst Special Mat & Technol, Shanghai 200433, Peoples R China|Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China;

Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R ChinaGeorge Mason Univ, Dept Mech Engn, Fairfax, VA 22030 USAFudan Univ, Inst Special Mat & Technol, Shanghai 200433, Peoples R China;

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正文语种英语
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bifunctional catalysts; high-rate water splitting; large current densities; monolithic electrodes; superaerophobic structures;

Monolithic Ni-Mo-B Bifunctional Electrode for Large Current Water Splitting

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