Bifunctional doped transition metal CoSSeNi–Pt/C for efficient electrochemical water splitting

Deng, Wei; Gai, Yuping; Li, Dan; Chen, Zhide; Xie, Wenshuo; Yu, Jun; Yang, Ran; Bao, Xichang; Jiang, Fei

doi:10.1016/j.ijhydene.2022.03.181

Cited by 12 publications

(3 citation statements)

References 68 publications

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“…34 The VCoS fast charge transfer dynamics are due to the higher intensity of PDOS, which is in line with the charge transfer resistance. 35 The DOS of VCoS was greatly increased compared with CoS and MoCoS (Fig. S1–S3, ESI†).…”

Section: Resultsmentioning

confidence: 98%

Experimentally revealed and theoretically certified synergistic electronic interaction of V-doped CoS for facilitating the oxygen evolution reaction

Zhang

Deng

Weng

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 98%

Experimentally revealed and theoretically certified synergistic electronic interaction of V-doped CoS for facilitating the oxygen evolution reaction

Zhang

Deng

Weng

et al. 2023

Phys. Chem. Chem. Phys.

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“…Additionally, two shakeup satellite peaks (labeled as Sat.) are observed in the Co 2p spectra of PtCoVO/g-C 3 N 4 , located at 786.9 eV and 803.1 eV, indicating characteristic peaks associated with Co 2+ species [43]. It can be observed that there is a peak at 781.7 eV in PtCoVO/g-C 3 N 4 that can be designated as a Co-N bond.…”

Section: Electrocatalytic Enhancement Mechanismmentioning

confidence: 91%

Intercalated PtCo Electrocatalyst of Vanadium Metal Oxide Increases Charge Density to Facilitate Hydrogen Evolution

Zhang,

Deng,

Weng

et al. 2024

Molecules

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Efforts to develop high-performance electrocatalysts for the hydrogen evolution reaction (HER) are of utmost importance in ensuring sustainable hydrogen production. The controllable fabrication of inexpensive, durable, and high-efficient HER catalysts still remains a great challenge. Herein, we introduce a universal strategy aiming to achieve rapid synthesis of highly active hydrogen evolution catalysts using a controllable hydrogen insertion method and solvothermal process. Hydrogen vanadium bronze HxV2O5 was obtained through controlling the ethanol reaction rate in the oxidization process of hydrogen peroxide. Subsequently, the intermetallic PtCoVO supported on two-dimensional graphitic carbon nitride (g-C3N4) nanosheets was prepared by a solvothermal method at the oil/water interface. In terms of HER performance, PtCoVO/g-C3N4 demonstrates superior characteristics compared to PtCo/g-C3N4 and PtCoV/g-C3N4. This superiority can be attributed to the notable influence of oxygen vacancies in HxV2O5 on the electrical properties of the catalyst. By adjusting the relative proportions of metal atoms in the PtCoVO/g-C3N4 nanomaterials, the PtCoVO/g-C3N4 nanocomposites show significant HER overpotential of η10 = 92 mV, a Tafel slope of 65.21 mV dec−1, and outstanding stability (a continuous test lasting 48 h). The nanoarchitecture of a g-C3N4-supported PtCoVO nanoalloy catalyst exhibits exceptional resistance to nanoparticle migration and corrosion, owing to the strong interaction between the metal nanoparticles and the g-C3N4 support. Pt, Co, and V simultaneous doping has been shown by Density Functional Theory (DFT) calculations to enhance the density of states (DOS) at the Fermi level. This augmentation leads to a higher charge density and a reduction in the adsorption energy of intermediates.

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“…Electrolysis of water to produce hydrogen involves two reaction processes: oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The catalysts of the positive and negative electrodes can promote the process to take place at a lower voltage [16][17][18]. So far, for the electrochemical water splitting process, the optimal catalysts for HER and OER are common precious metal materials for instance, Ir, Ru, and Pt, but these noble metals and their compounds are limited by low durability application and their high cost [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Construction of Bimetallic Co/Fe-Incorporated PTA/FDA Nanoclusters for Boosting Electrocatalytic Oxygen Evolution

Gai

Deng

et al. 2023

International Journal of Energy Research

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Summary. Electrochemical water decomposition as a crucial approach for the gradual growth of renewable energy has attracted extensive attention. Metal-organic frameworks (MOFs) which benefit from ultra-high specific surface area, controllable nanostructures, and excellent porosity have been widely used as high activity catalyst for the decomposition of water by electrochemical means. Herein, the composition and morphology of metal–organic framework nanoclusters with bimetallic Co/Fe-incorporated PTA/FDA nanoclusters is designed for efficient and durable OER electrocatalysts, including CoFe-BTC/PTA, CoFe-BTC/FDA, and CoFe-PTA/FDA. The crystal structure of MOF materials is composed of alternating organic hydrocarbon BTC, PTA, or FDA and inorganic metal oxide layer. Co and Fe interact as central atoms, joining BTC, PTA, or FDA ligands to form a highly symmetric MOF structure. The electronic structures and active sites of various metals are different, and the insertion of iron atoms plays a certain role in the regulation of their electronic structures. CoFe-PTA/FDA shows significant OER overpotential η 10 = 295 mV (1.525 V vs. RHE) reached 10 mA cm-2, with 62.85 mV dec-1 for Tafel slope and pretty conspicuous stability (72 hours of continuous testing). The DFT calculation results show coordination unsaturated metal atom is the primary active center of these electrocatalytic reaction, and the coupling effect caused by adding Fe is the key to adjust the electrocatalytic activity.

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Bifunctional doped transition metal CoSSeNi–Pt/C for efficient electrochemical water splitting

Cited by 12 publications

References 68 publications

Experimentally revealed and theoretically certified synergistic electronic interaction of V-doped CoS for facilitating the oxygen evolution reaction

Experimentally revealed and theoretically certified synergistic electronic interaction of V-doped CoS for facilitating the oxygen evolution reaction

Intercalated PtCo Electrocatalyst of Vanadium Metal Oxide Increases Charge Density to Facilitate Hydrogen Evolution

Construction of Bimetallic Co/Fe-Incorporated PTA/FDA Nanoclusters for Boosting Electrocatalytic Oxygen Evolution

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