PANI-coated porous FeP sheets as bifunctional electrocatalyst for water splitting

Gao, Meilian; Gao, Pingping; Lei, Ting; Ouyang, Chun; Wu, Xiaobo; Wu, An‐Bang; Du, Yong

doi:10.1016/j.colsurfa.2022.129673

Cited by 8 publications

(1 citation statement)

References 42 publications

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“…[ 44 ] The Fe 2 p 1/2 spectrum in FeCo‐P can be deconvoluted into three main peaks at 720.4, 724.5, and 728.9 eV, respectively, which are attributed to the satellite peak, Fe 2+ , and Fe. 3+[ 45 ] Compared to the monometallic phosphide Fe‐P, the Fe 2p 3/2 peak in the bimetallic phosphide FeCo‐P shifts by 0.5 eV toward a lower binding energy region, and the Fe 2 p 1/2 peak shifts by 2.2 eV toward a higher binding energy region. This indicates a significant electron transfer occurring between the heterojunction of bimetallic phosphides Co 2 P and FeP.…”

Section: Resultsmentioning

confidence: 99%

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Jiang,

Zhao,

et al. 2023

Advanced Science

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The design of catalysts with tunable active sites in heterogeneous interface structures is crucial for addressing challenges in the water‐splitting process. Herein, a hollow spherical heterostructure FeCo‐P is successfully prepared by hydrothermal and phosphorization methods. This hollow structure, along with the heterogeneous interface between Co2P and FeP, not only facilitates the exposure of more active sites, but also increases the contact area between the catalyst and the electrolyte, as well as shortens the distance for mass/electron transfer. This enhancement promotes electron transfer to facilitate water decomposition. FeCo‐P exhibits excellent hydrogen evolution (HER) and oxygen evolution (OER) performance when reaching @ 10 mA cm−2 in 1 mol L−1 KOH, with overpotentials of 131/240 mV for HER/OER. Furthermore, when FeCo‐P is used as both the cathode and anode for overall water splitting (OWS), it only requires low voltages of 1.49, 1.55, and 1.57 V to achieve CDs of 10, 100, and 300 mA cm−2, respectively. Density functional theory calculations indicate that constructing a Co2P and FeP heterogeneous interface with good lattice matching can facilitate electron redistribution, thereby enhancing the electrocatalytic performance of OWS. This work opens up new possibilities for the rational design of efficient water electrolysis catalysts derived from MOFs.

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Section: Resultsmentioning

confidence: 99%

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Jiang,

Zhao,

et al. 2023

Advanced Science

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Clustered VCoCOx Nanosheets Anchored on MXene–Ti₃C₂@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting

Wang,

Tao,

et al. 2024

Small Structures

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Ti3C2, one typical MXene, has great potential to be coupled with various transition metals. Herein, a novel and effective catalyst is developed by synergistically loading VCoCOx onto Ti3C2‐modified nickel foam (VCoCOx–Ti3C2@NF). Field emission scanning electron microscope and high‐resolution transmission electron microscopy are employed to characterize the morphology and structure. As expected, the catalyst optimized by response surface methodology attains overpotentials of 290 and 64 mV and Tafel slopes of 82 and 79 mV dec−1 for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. By using the bifunctional VCoCOx–Ti3C2@NF catalyst, the water splitting current density achieves 10 mA cm−2 in 1.0 mol L−1 KOH electrolyte at cell voltage of 1.52 V, comparable with the noble metal electrolyzer Pt@C@NF||RuO2@NF (1.57 V). Furthermore, the resulting catalyst exhibits excellent cycling durability after 120 h of continuous catalysis, which retains 103.8% and 105.4% of potential (V vs reversible hydrogen electrode) for OER and HER, respectively. Density functional theory calculation reveals that the Gibbs free energy barriers for the OER and HER intermediates are reduced due to the integration of VCoCOx with Ti3C2@NF. The fabricated VCoCOx–Ti3C2@NF catalyst is a promising electrochemical material for clean energy production.

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An efficient electrocatalytic catalyst for hydrogen production: MoS2/Cu2S/PANI with 'wheat ear' structure

Wang,

Chen,

Liao

2023

Reac Kinet Mech Cat

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PANI-coated porous FeP sheets as bifunctional electrocatalyst for water splitting

Cited by 8 publications

References 42 publications

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Clustered VCoCOx Nanosheets Anchored on MXene–Ti₃C₂@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting

An efficient electrocatalytic catalyst for hydrogen production: MoS2/Cu2S/PANI with 'wheat ear' structure

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PANI-coated porous FeP sheets as bifunctional electrocatalyst for water splitting

Cited by 8 publications

References 42 publications

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Clustered VCoCOx Nanosheets Anchored on MXene–Ti3C2@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting

An efficient electrocatalytic catalyst for hydrogen production: MoS2/Cu2S/PANI with 'wheat ear' structure

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Product

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Clustered VCoCOx Nanosheets Anchored on MXene–Ti₃C₂@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting