High-efficiency hydrogen evolution reaction catalyzed by iron phosphide nanocrystals

Gao, Zhichao; Gao, Qian; Liu, Zhipeng; Zhang, Cong; Zhang, Xiaoting; Liu, Xin; Wang, Qianqian; Li, Nan

doi:10.1039/c6ra24186g

Cited by 18 publications

(9 citation statements)

References 44 publications

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“…As shown in Fig. 4b [49][50][51] In addition to catalytic activity, stability is another critical factor to evaluate a good electrocatalyst, we investigated the stability of Co-FeS 2 /CoS 2 heterostructures via 1000 cycles scanning. As shown in Fig.…”

Section: -25mentioning

confidence: 99%

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Guo

Yan

et al. 2018

RSC Adv.

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The traditional method of preparing hydrogen and oxygen as efficient clean energy sources mainly relies on the use of platinum, palladium, and other precious metals. However, the high cost and low abundance limit wide application of such metals. As such, one challenging issue is the development of low-cost and highefficiency electrocatalysts for such purposes. In this study, we synthesized Co-FeS 2 /CoS 2 heterostructures via a hydrothermal method for efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Benefitting from their unique three-dimensional hierarchical nanostructures, Co-doped FeS 2 , and CoS 2 formed heterostructures on Co-FeS 2 petals, which bestowed remarkable electrocatalytic properties upon Co-FeS 2 /CoS 2 nanostructures. Co-FeS 2 /CoS 2 effectively catalyzed the OER with an overpotential of 278 mV at a current density of 10 mA cm À2 in 1 M KOH solution, and also is capable of driving a current density À10 mA cm À2 at an overpotential of À103 mV in 0.5 M H 2 SO 4 solution. The overpotential of the OER and HER only decreased by 5 mV and 3 mV after 1000 cycles. Our Co-FeS 2 / CoS 2 materials may offer a promising alternative to noble metal-based electrocatalysts for water splitting.

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Section: -25mentioning

confidence: 99%

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Guo

Yan

et al. 2018

RSC Adv.

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“…It can be found that all diffraction peaks in the XRD pattern are assigned to the FeP phase (JCPDS no. 65‐2565), confirming successful conversion of Fe‐based glycolate to FeP after the phosphidation reaction . The surface composition of the FeP hollow microspheres is investigated through XPS analysis (Figure b‐6d).…”

Section: Resultsmentioning

confidence: 77%

Formation of Uniform FeP Hollow Microspheres Assembled by Nanosheets for Efficient Hydrogen Evolution Reaction

Guo

Feng

et al. 2017

ChemElectroChem

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High‐performance electrocatalysts with superior stability are critically important for their practical applications in the hydrogen evolution reaction (HER). Recently, some electrocatalysts with hollow and porous structures have attracted much attention because of their large surface‐to‐volume ratio and highly exposed active edge sites. In this study, the hierarchical Fe‐based glycolate hollow microspheres composed of nanosheet subunits are synthesized by the solvothermal method. The morphology and microstructure of Fe‐based glycolate hollow microspheres can be controlled by adjusting the amount of ethylenediamine. After phosphorizing in nitrogen, the Fe‐based glycolate can be converted into FeP with well‐retained structure. Furthermore, the hierarchical FeP hollow microspheres have been used as electrocatalysts for HER. Benefitting from its high surface area, the FeP hollow microspheres exhibited high catalytic activity toward HER with low onset overpotential, small Tafel slope, and good stability under acidic conditions. The excellent catalytic activity and long‐term stability suggest promising application potential of FeP hollow microspheres in electrocatalytic hydrogen evolution.

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“…The Nyquist plots of the samples (Figure 6f) reveal a much higher charge-transfer resistance for CoMoP than for CoMoP 2 , which is consistent with the slower HER kinetics observed for the former electrocatalyst. [39] The lower carbon content of CoMoP and slightly larger particle size can account for the higher resistance of CoMoP. [39] To clarify the effect of the resistance on the relative performance of the catalysts, electrodes were additionally prepared by adding conductive carbon to the metal phosphide materials (these electrodes are named CoMoP-C and CoMoP 2 -C).…”

Section: Resultsmentioning

confidence: 99%

The Importance of Ligand Selection on the Formation of Bimetallic Phosphide Catalysts Derived from Metal-Organic Frameworks

El-Refaei¹,

Russo²,

Amsalem³

et al. 2019

Preprint

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Coordination polymers (CPs) and metal-organic frameworks (MOFs) have emerged as versatile precursors for transition-metal phosphides catalysts. However, the controlled synthesis of MOF-derived bimetallic phosphides remains a challenge, as mixtures of various phosphide phases are often formed. Here, it is shown that controlling the formation of pure CoMoP and CoMoP2 requires a careful choice of the ligands used to construct the MOF precursors, based on the chemical properties of the metals. In particular, the nature and number of the coordination moieties of the ligand play a key role. CoMoP and CoMoP2 particles coated with N-doped carbon were derived from phosphonate-based MOFs and compared as hydrogen evolution reaction (HER) electrocatalysts in acidic medium. CoMoP2 is more active and shows a turnover frequency (TOF) of 0.9 s-1 compared to 0.4 s-1 for CoMoP. The higher intrinsic activity of the CoMoP2 catalytic sites correlates with the differences in the electronic structure of the materials, with a larger charge transfer from the molybdenum to the phosphorous found for CoMoP2.

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High-efficiency hydrogen evolution reaction catalyzed by iron phosphide nanocrystals

Abstract: Iron phosphide ultrafine nanocrystals supported on carbon black were synthesized via a facile method and used as a highly efficient hydrogen evolution reaction electrocatalyst.

Cited by 18 publications

References 44 publications

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Formation of Uniform FeP Hollow Microspheres Assembled by Nanosheets for Efficient Hydrogen Evolution Reaction

The Importance of Ligand Selection on the Formation of Bimetallic Phosphide Catalysts Derived from Metal-Organic Frameworks

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High-efficiency hydrogen evolution reaction catalyzed by iron phosphide nanocrystals

Abstract: Iron phosphide ultrafine nanocrystals supported on carbon black were synthesized via a facile method and used as a highly efficient hydrogen evolution reaction electrocatalyst.

Cited by 18 publications

References 44 publications

Hierarchical Co–FeS2/CoS2 heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS2/CoS2 heterostructures as a superior bifunctional electrocatalyst

Formation of Uniform FeP Hollow Microspheres Assembled by Nanosheets for Efficient Hydrogen Evolution Reaction

The Importance of Ligand Selection on the Formation of Bimetallic Phosphide Catalysts Derived from Metal-Organic Frameworks

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Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst