Mo/P doped NiFeSe as bifunctional electrocatalysts for overall water splitting

Gu, Ruizhe; Zhou, Tao; Wang, Zihao; Chen, Zheng; Tao, Junwen; Fan, Zhewei; Guo, Lingyun; Liu, Yongsheng

doi:10.1016/j.ijhydene.2023.03.463

Cited by 10 publications

(2 citation statements)

References 59 publications

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“…Two absorption peaks of 3426 and 1630 cm −1 were caused by stretching vibration of hydroxyl O-H on the laminate and bending vibration of interlaminar water molecules. The strong absorption peak of 1404 cm −1 can be attributed to the symmetric tensile vibration of Co-O, which indicates that the Co-O intercalationthe low absorption peak is caused by lattice vibration of metal-oxygen bond (Ni-O or Co-O) [27][28][29][30]. Figure 1g shows the Raman spectra of Ni 2 Co-LDH@C. The characteristic peaks of 1342, 1575, and 884 cm −1 in the Raman spectrum correspond to D, G, and 2D peaks of the silk carbonized material, respectively.…”

Section: Characterization Of Electrocatalystsmentioning

confidence: 99%

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Wan,

Tang,

Dai

et al. 2023

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A reasonable design of nickel-based catalysts is key to efficient and sustainable energy conversion. For electrocatalytic materials in alkaline electrolytes, however, atomic-level control of the active sites is essential. Moreover, the well-defined surface structure contributes to a deeper understanding of the catalytic mechanism. Here, we report the loading of defective nickel–cobalt layered double hydroxide nanosheets (Ni2Co-LDH@C) after carbonization of silk. Under the precise regulation of the local coordination environment of the catalytic active site and the presence of defects, Ni2Co-LDH@C can provide an ultra-low overpotential of 164.8 mV for hydrogen evolution reactions (HERs) at 10 mA cm−2, exceeding that of commercial Pt/C catalysts. Density functional theory calculations show that Ni2Co-LDH@C optimizes the adsorption energy of the intermediate and promotes the O-O coupling of the active site in the oxygen evolution reaction. When using Ni2Co-LDH@Cs as cathodes and anodes to achieve overall water splitting, a low voltage of 1.63 V is required to achieve a current density of 10 mA cm−2. As an ideal model, Ni2Co-LDH@C has excellent water splitting properties and has the potential to develop water–alkali electrocatalysts.

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Section: Characterization Of Electrocatalystsmentioning

confidence: 99%

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Wan,

Tang,

Dai

et al. 2023

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“…It has the advantages of a fast reaction process, high purity of hydrogen produced, and environmental friendliness. However, cathode HER has high energy consumption, which has hindered its large-scale application. − In order to improve the efficiency of electrocatalytic water cracking, it is urgent to develop effective and sustainable electrocatalysts to accelerate its kinetics. Currently, platinum-based materials are still the most important and common catalysts, but precious-metal catalysts are scarce and expensive, which limits their large-scale application.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Functional Blocks of Organic Ligands Regulating the Electrocatalytic Hydrogen Evolution Reaction of Co(II)- or Ni(II)-Based Organic Frameworks/Nickel Foam Composites

Qin,

Zhou,

Zhao

et al. 2023

ACS Appl. Energy Mater.

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The design of efficient and ultradurable hydrogen evolution reaction (HER) electrocatalysts is very important to the development of a green hydrogen economy. Herein, three examples of metal−organic frameworks (MOFs) with similar structures were designed and synthesized by adjusting the functional blocks in the structures of organic ligands. On the basis of the self-supporting material formed by these MOFs and nickel foam, we phosphated them to obtain heterojunction catalysts. Different functional blocks in the ligands have different effects on the phosphating process and thus yield different heterojunction structures. Due to the synergistic action of NiP and Ni 5 P 4 , a high catalytic performance was achieved. This work provides a theoretical direction for the study of the structure− activity relationship and the synthesis of efficient HER catalysts.

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Structure deformation of Ni–Fe–Se enables efficient oxygen evolution via RE atoms doping

Zhao,

Yuan,

et al. 2024

Rare Met.

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Mo/P doped NiFeSe as bifunctional electrocatalysts for overall water splitting

Cited by 10 publications

References 59 publications

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Highly Effective Electrochemical Water Splitting with Enhanced Electron Transfer between Ni2Co Layered Double Hydroxide Nanosheets Dispersed on Carbon Substrate

Optimization of Functional Blocks of Organic Ligands Regulating the Electrocatalytic Hydrogen Evolution Reaction of Co(II)- or Ni(II)-Based Organic Frameworks/Nickel Foam Composites

Structure deformation of Ni–Fe–Se enables efficient oxygen evolution via RE atoms doping

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