Electronic Structure Engineering of Pt Species over Pt/WO₃ toward Highly Efficient Electrocatalytic Hydrogen Evolution

Small, Journal Year: 2023, Volume and Issue: 19(32)

Published: April 17, 2023

Abstract Pt‐based supported materials, a widely used electrocatalyst for hydrogen evolution reaction (HER), often experience unavoidable electron loss, resulting in mismatching of electronic structure and HER behavior. Here, Pt/WO 3 catalyst consisting Pt species strongly coupled with defective WO polycrystalline nanorods is rationally designed. The engineering sites on can be systematically regulated, so that the optimal electron‐rich ‐600 present an excellent activity only 8 mV overpotential at 10 mA cm −2 . Particularly, mass reaches 7015 mg −1 50 mV, up to 26‐fold higher than commercial Pt/C. combination experimental theoretical results demonstrates O vacancies effectively mitigate tendency transfer from , d‐band center could reach appropriate level relative Fermi level, endowing it suitable This work identifies influence catalytic activity.

Language: Английский

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Crystalline/amorphous Ni/NixSy supported on hierarchical porous nickel foam for high-current-density hydrogen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123195 - 123195

Published: Aug. 21, 2023

Language: Английский

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Oxygen-vacancy-rich MoO2 supported nickel as electrocatalysts to promote alkaline hydrogen evolution and oxidation reactions

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142671 - 142671

Published: March 29, 2023

Language: Английский

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Metallic Metastable Hybrid 1T′/1T Phase Triggered Co,PSnS₂ Nanosheets for High Efficiency Trifunctional Electrocatalyst

Small, Journal Year: 2023, Volume and Issue: 19(11)

Published: Jan. 4, 2023

The development of trifunctional electrocatalyst for oxygen reduction reaction (ORR), evolution (OER), and hydrogen (HER) with deeply understanding the mechanism to enhance electrochemical performance is still a challenging task. In this work, distorted metastable hybrid-phase induced 1T'/1T Co,PSnS2 nanosheets on carbon cloth (1T'/1T @CC) prepared examined. density functional theoretical (DFT) calculation suggests that can provide excellent conductivity strong adsorption ability. electronic structure tuning enhancement are investigated discussed. optimal @CC catalyst exhibits low overpotential ≈94 219.7 mV at 10 mA cm-2 HER OER, respectively. Remarkably, exceptional ORR activity small onset potential value (≈0.94 V) half-wave (≈0.87 V). Most significantly, ||Co,PSnS2 electrolyzer required cell voltages ≈1.53, 1.70, 1.82 V 10, 100, 400 , respectively, which better than those state-of-the-art Pt-C||RuO2 (≈1.56 1.84 100 ). present study new approach preparation large-scalable, high hierarchical 3D next-generation electrocatalysts.

Language: Английский

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Frank Partial Dislocations in Coplanar Ir/C Ultrathin Nanosheets Boost Hydrogen Evolution Reaction

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 21, 2023

Abstract Developing highly active and stable acidic hydrogen evolution catalysts is of great significance challenge for the long‐term operation commercial proton exchange membrane (PEM) electrolyzers. In this work, coplanar ultrathin nanosheets composed rich‐Frank partial dislocations (FPDs) are first synthesized. Ir nanoparticles carbon (Dr‐Ir/C NSs) use a nonequilibrium high‐temperature thermal shock method (>1200 °C) KBr template‐assisted techniques. Dr‐Ir/C NSs exhibit excellent reaction (HER) performance with remarkably high mass activity 6.64 A mg −1 at 50 mV, which among best Ir‐based catalysts.In addition, able to operate stably 1.0 cm −2 200 h as cathode in PEM electrolyser, original structure maintained after test, demonstrating stability against stacking agglomeration. Geometrical phase analysis theoretical calculations show that FPDs produce 4% compressive strain NSs, weaken adsorption H* by Ir, thus increasing intrinsic catalyst.

Language: Английский

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Review of S-Scheme Heterojunction Photocatalyst for H₂O₂ Production

Acta Physico-Chimica Sinica, Journal Year: 2023, Volume and Issue: 0(0), P. 2212010 - 2212010

Published: Jan. 1, 2023

Abstract:

Language: Английский

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Ru dopant induced high selectivity and stability of ternary RuSnTi electrode toward chlorine evolution reaction

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 349, P. 123892 - 123892

Published: April 24, 2024

Language: Английский

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d-band center engineering of single Cu atom and atomic Ni clusters for enhancing electrochemical CO2 reduction to CO

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 674, P. 326 - 335

Published: June 24, 2024

Language: Английский

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Efficient and stable chlorine evolution reaction in a neutral environment using a low-ruthenium-doped CuMnRu/CC electrode

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 112, P. 369 - 377

Published: March 1, 2025

Language: Английский

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Atom-triggered epitaxial growth of Bi-based perovskite heterojunctions for promoting interfacial charge transfer

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 335, P. 122889 - 122889

Published: May 16, 2023

Language: Английский

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