P-doped MOF-derived NiMo bimetallic sulfide used as a high efficiency electrocatalyst for oxygen evolution reaction

Chen, Bingyu; Zhu, Shuifeng; Qian, Yafeng; Wu, Dong; Huang, Linghui; Wang, Jingwen; Xie, Aijuan; Luo, Shiping

doi:10.1039/d4nj00334a

New J. Chem.

2024

DOI: 10.1039/d4nj00334a

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P-doped MOF-derived NiMo bimetallic sulfide used as a high efficiency electrocatalyst for oxygen evolution reaction

Bingyu Chen,

Shuifeng Zhu,

Yafeng Qian

et al.

Abstract: Metal-organic framework (MOF) was used as a template to prepare transition metal sulfides and phosphides in order to expose the active site of the material to a greater extent. According...

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Obtaining the High Valence of Ni/Fe Sites in a Heterostructure Induced by Implanting the NiFe-DTO MOF as a Highly Active OER Catalyst

Li,

Gao,

Dou

et al. 2024

ACS Sustainable Chem. Eng.

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The oxygen evolution reaction (OER) is a pivotal half-reaction in water electrolysis to generate hydrogen. Currently, the development of efficient OER electrocatalysts is essential to accelerate the reaction process and enhance conversion efficiency. The MOF of NiFe-DTO (NiFe-D) composed of a dithiooxamide (DTO) ligand was constructed using nanosheet-like NiFe-LDH as the precursor and template. Eventually, a NiFe-DTO-derived NiSeS and Fe 3 Se 4 heterostructure electrocatalyst supported on carbon cloth (NiFe-D-Se) was obtained by the subsequent selenization process. The results demonstrate that implanting NiFe-DTO could induce the transition of crystal composition. The optimal NiFe-D-Se catalyst is composed of NiSeS and Fe 3 Se 4 crystals (NiSeS@Fe 3 Se 4 ), whereas the catalyst (NiFe-Se) derived from NiFe-LDH is made of Ni 3 Se 4 and Fe 3 Se 4 . Ascribed to the different composition, the high loading of Ni and Fe with low electronic density is gained in the NiFe-D-Se sample, which are active sites for the OER. In situ EIS test results indicate that NiFe-D-Se is easy to polarize. As a result, the NiSeS and Fe 3 Se 4 heterostructure electrocatalyst exhibits excellent OER performance in 1 M KOH with an overpotential of only 177 mV at 10 mA cm −2 and high TOF and FE values, and the current degradation is only 2.15% and 3.56% after 24 and 120 h I-t test, respectively, which confirms the outperforming performance in comparison with the advanced material reported recently. This work offers a feasible method for fabricating active OER heterostructure electrocatalysts.

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Obtaining the High Valence of Ni/Fe Sites in a Heterostructure Induced by Implanting the NiFe-DTO MOF as a Highly Active OER Catalyst

Li,

Gao,

Dou

et al. 2024

ACS Sustainable Chem. Eng.

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P-doped MOF-derived NiMo bimetallic sulfide used as a high efficiency electrocatalyst for oxygen evolution reaction

Abstract: Metal-organic framework (MOF) was used as a template to prepare transition metal sulfides and phosphides in order to expose the active site of the material to a greater extent. According...

Cited by 1 publication

References 55 publications

Obtaining the High Valence of Ni/Fe Sites in a Heterostructure Induced by Implanting the NiFe-DTO MOF as a Highly Active OER Catalyst

Obtaining the High Valence of Ni/Fe Sites in a Heterostructure Induced by Implanting the NiFe-DTO MOF as a Highly Active OER Catalyst

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