标题: A highly efficient and durable self-standing iron-cobalt-nickel trimetallic phosphide electrode for oxygen evolution reaction

作者: Guo, YF (Guo, Yifan); Wang, PL (Wang, Peilin); Li, P (Li, Peng); Tang, MY (Tang, Mengyi); Yin, HY (Yin, Huayi); Wang, DH (Wang, Dihua)

来源出版物: JOURNAL OF ALLOYS AND COMPOUNDS卷: 960文献号: 170493 DOI: 10.1016/j.jallcom.2023.170493提前访问日期: MAY 2023出版年: OCT 15 2023

摘要: The development of cost-effective, highly efficient, and durable oxygen evolution reaction (OER) electro-catalysts is both a necessity and challenge for large-scale water electrolyzers, which is crucial for future sustainable and clean energy systems. Here we report a self-standing trimetallic phosphide (FeCoNi-P/NF) electrode prepared by the electroreduction of Fe2O3 and Co3O4 on the Ni foam in molten salts and the subsequent phosphorization process. In the electroreduction process, the Ni source provided by Ni foam participates in the alloying process as a solvent phase, which leads to the strong bonding between the substrate and the active material. In addition, the alloys grown by co-reduction and alloying on the three-dimensional skeleton of the Ni foam can expose more active sites by increasing the surface areas through the phosphorization process. Benefiting from the synergistic effects and strong electronic coupling from the Fe, Co, and Ni trinary phosphides, the FeCoNi-P/NF shows excellent OER activity and stability with an overpotential of only 239.5 mV at 10 mA cm-2 and a long-term stability of more than 200 h at 50-300 mA cm-2 in 1.0 M KOH. Overall, this paper offers a straightforward method to prepare low-cost and durable muti-component transition metal-based self-standing OER electrodes.(c) 2023 Elsevier B.V. All rights reserved.

作者关键词: Trimetallic phosphide; Self -standing electrode; Electrocatalysis; Surface alloying; Oxygen evolution reaction

地址: [Guo, Yifan; Wang, Peilin; Li, Peng; Tang, Mengyi; Yin, Huayi; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

[Yin, Huayi] Northeastern Univ, Sch Met, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China.

通讯作者地址: Wang, DH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

电子邮件地址:wangdh@whu.edu.cn

影响因子：6.2