Electrochemically treated AlCoCrFeNi high entropy alloy as a self-supporting electrode for overall water splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 72, P. 209 - 219

Published: May 29, 2024

Language: Английский

---

V‐Doping Strategy Induces the Construction of the Functionally Complementary Ru₂P/V‐RuP₄ Heterostructures to Achieve Amperometric Current Density for HER

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: March 13, 2024

Abstract It is a great challenge to induce the formation of RuP 4 phase and realize construction metal‐rich phase/phosphorus‐rich phase‐ruthenium phosphide heterostructure by directional regulation proportion P metal atoms. The ultra‐high conductivity Ru 2 excellent ability V‐doped absorb/desorb H* are confirmed density functional theory (DFT) calculations, which laid theoretical foundation for unique P/V‐RuP structure accelerate HER reaction kinetics. This work innovatively uses V‐doping strategy with high intrinsic activity, finally construct V‐Ru x y nanosheets rich Ru/Ru heterostructures. Thanks optimization V dopants, catalyst only needs 180 mV obtain an industrial‐grade current 1 A cm −2 . In summary, this provides new idea design performance ruthenium‐based catalysts.

Language: Английский

---

Unique sandwich-cookie-like nanosheet array heterojunction bifunctional electrocatalyst towards efficient overall water/seawater splitting

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 669, P. 935 - 943

Published: May 11, 2024

Language: Английский

---

CoFe-Layered Double Hydroxide Needles on MoS₂/Ni₃S₂ Nanoarrays for Applications as Catalysts for Hydrogen Evolution and Oxidation of Organic Chemicals

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(6), P. 6449 - 6459

Published: March 14, 2024

Electrochemical water splitting prompted by organic molecules presents a competitive prospect for implementing energy-efficient hydrogen evolution and alleviating organic-rich pollution. In this work, we fabricated heterojunction of CoFe-layered double hydroxide (CoFe LDH) needles on MoS2/Ni3S2/nickel foam (NF) nanoarrays LDH/MoS2/Ni3S2/NF) forming Schottky interface p–p interface. The prepared CoFe LDH/MoS2/Ni3S2/NF exhibits superior electrocatalytic activities with low potentials to drive 50 mA cm–2 the reaction (HER, 0.098 V vs reversible electrode (RHE)), oxygen (OER, 1.507 RHE), urea oxidation (UOR, 1.460 ethanol (ETOR, 1.484 RHE). Meanwhile, can maintain robust stability in these reactions. enhanced result from increased active sites acceleration charge transfer caused built-in electric fields. Moreover, catalyst also remarkable catalytic performance two-electrode systems KOH, KOH assisted urea, polylactic acid. This work offers rational method designing efficient electrocatalysts via combining heterojunctions effectively generate energy treat pollutants.

Language: Английский

---

Pt quantum dots coupled with NiFe LDH nanosheets for efficient hydrogen evolution reaction at industrial current densities

Microstructures, Journal Year: 2025, Volume and Issue: 5(2)

Published: Feb. 26, 2025

Developing efficient and economical electrocatalysts for hydrogen generation at high current densities is crucial advancing energy sustainability. Herein, a self-supported evolution reaction (HER) electrocatalyst rationally designed prepared on nickel foam through simple two-step chemical etching method, which consists of Pt quantum dots (PtQDs) coupled with nickel-iron layered double hydroxide (NiFe LDH) nanosheets (named PtQDs@NiFe LDH). The characterization results indicate that the introduction PtQDs induces more oxygen vacancies, thereby optimizing electronic structure LDH. This modification enhances conductivity accelerates adsorption/desorption kinetics intermediates in LDH, ultimately resulting exceptional catalytic performance HER large densities. Specifically, LDH delivers 500 2000 mA·cm-2 remarkably low overpotentials 92 252 mV, respectively, markedly outperforming commercial Pt/C (η500 = 190 η2000 436 mV). Moreover, when employing NiFe precursor catalyst as anode cathode, an overall water electrolysis system, only 1.66 V 2.02 are required to achieve mA·cm-2, while maintaining robust stability 200 h. study introduces feasible approach developing industrial-scale

Language: Английский

---

Engineering Ru and Ni sites relay catalysis and strong metal-support interaction for synergetic enhanced electrocatalytic hydrogen evolution performance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161348 - 161348

Published: March 1, 2025

Language: Английский

---

Cu/Fe-MOFs based on mixed ligands: Synthesis, crystal structure and electrocatalytic hydrogen evolution performance

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1307, P. 137968 - 137968

Published: March 9, 2024

Language: Английский

---

Preparation of NiTe-Ni(OH)2/NF active cathode material as an electrocatalyst for hydrogen evolution

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 990, P. 174458 - 174458

Published: April 8, 2024

Language: Английский

---

Interface effect-boosted Ni(OH)2@CoP core–shell nanoarrays as bifunctional electrocatalyst for urea-assisted energy-saving hydrogen production via water splitting

Fuel, Journal Year: 2025, Volume and Issue: 386, P. 134285 - 134285

Published: Jan. 7, 2025

Language: Английский

---

Magnesium-doped Nickel-iron (Hyro)oxides-based Catalyst for Efficient and Stable Hydrogen Evolution

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 574, P. 114885 - 114885

Published: Feb. 1, 2025

Language: Английский

---