用单片Fe2B构建自支撑阳极和阴极，实现高效水分解

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-09-15 DOI:10.1016/j.physb.2025.417812

Shuai Wan , Lihong Bao , Jiayu Xiao , Jiaru He , Xinyu Gao , Hao Wang , Yongjun Cao , Ruguang Ma

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引用次数: 0

摘要

采用超低铂簇和以自支撑Fe2B薄膜（Fe2B- tf）构建无定形co，分别合成了高效的析氢反应（HER）和析氧反应（OER）电催化剂。结果表明，在碱性介质中，在10 mA cm−2条件下，Pt/Fe2B的HER过电位为78 mV， CoS/Fe2B的OER过电位为243 mV。此外，CoS/Fe2B||Pt/Fe2B-06双电极电解槽需要2.0 V的电池电压才能达到414 mA cm−2的高电流密度，约为商用RuO2||Pt/C的2.3倍。同时，它保持了显著的耐久性，维持100 mA cm−2的高电流密度超过30 h。因此，fe2o - tf与Pt簇和无定形CoS的良好耦合有效地提高了电化学水分解活性，使其在工业碱性水电解中具有潜在的应用前景。

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Constructing self-supported anode and cathode by monolithic Fe2B for highly efficient water splitting

High efficient bifunctional hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalysts have been synthesized through the ultralow Pt cluster and amorphous CoS constructing with self-supported Fe₂B thin film (Fe₂B-TF), respectively. As a result, the Pt/Fe₂B exhibit a low overpotential of 78 mV for HER and CoS/Fe₂B show a low overpotential of 243 mV for OER at 10 mA cm⁻² in alkaline media. Moreover, a two-electrode electrolyzer of CoS/Fe₂B||Pt/Fe₂B-06 requires the cell voltage of 2.0 V to reach the high current density of 414 mA cm⁻², which is about 2.3 times larger than that of commercial RuO₂||Pt/C. Meanwhile, it keeps a remarkable durability, maintaining a high current density of 100 mA cm⁻² for more than 30 h. Therefore, the favorable coupling of Fe₂B-TF with Pt cluster and amorphous CoS effectively improve the electrochemical water splitting activity, making it has potential application in industrial alkaline water electrolysis.

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces