Pyrolysis‐Free Synthesis of Synergistic Single‐Atom/Nanocluster Electrocatalysts for Hydrogen Evolution

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Constructing catalysts that simultaneously contain single atom/metal nanocluster active sites is a promising strategy to enhance the original catalytic behavior and accelerate catalysis involving multi‐electron reactions or multi‐intermediates. Herein, pyrolysis‐free synthetic method developed integrate atoms nanoclusters towards highly satisfactory performances for both acidic alkaline hydrogen electrocatalysis. The controllable allows precise modulation of centers, realizing optimization adsorption energy regulation synergistic components. Specially, as‐prepared with hybrid single‐atom/nanocluster exhibited superior activities evolution in media low over‐potentials at −10 mA cm −2 25 mV 8.6 mV, respectively, combining outstanding durability high current density methanol poisoning. This work universal atom/nanocluster synergy systems addressed superiority sites.

Language: Английский

---

Plasma synthesis of defect-rich flexible carbon cloth decorated with PtRu alloyed nanoclusters for highly efficient pH-universal electrocatalytic hydrogen evolution

Nanoscale, Journal Year: 2022, Volume and Issue: 14(42), P. 15942 - 15949

Published: Jan. 1, 2022

Designing electrocatalysts with superior activity and stability to Pt/C for the highly efficient pH-universal electrochemical hydrogen evolution reaction (HER) still remains an urgent challenge. Herein, we report a facile plasma method preparation of defect-rich flexible carbon cloth decorated ultralow-loading (0.1 wt%) PtRu alloyed nanoclusters (PtRu/CC-P) resolve these problems. Remarkably, developed PtRu/CC-P catalyst delivered high mass 3.77 A mg-1 (η = 100 mV), almost 3.6 times higher than that benchmark HER electrocatalyst 20%Pt/C (1.05 mg-1). Meanwhile, it only required low overpotential 44 mV achieve current density 10 mA cm-2 in alkaline media. Systematic experimental DFT calculation results revealed Pt-Ru bridge can optimize adsorption strength intermediates at active sites, decrease H2O dissociation energy barrier, consequently facilitate kinetics. Inspiringly, when content was increased 1 wt%, exhibited relatively 276 even 1000 maintained excellent durability 50-500 more 15 h In addition, also showed brilliant neutral acidic This provides feasible route rational design Pt-based catalysts toward industrial production all-pH values.

Language: Английский

---

Preparation of a Pt-Ni2P/NF catalyst for highly efficient hydrogen evolution using a magnetic field to promote Ni-Pt galvanic replacement

Journal of Material Science and Technology, Journal Year: 2022, Volume and Issue: 142, P. 144 - 151

Published: Nov. 12, 2022

Language: Английский

---

Optimization of hollow Pt-Ni alloy bifunctional electrocatalysts via ethylene glycol/glycerol ratio in modified polyol process

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 632, P. 236322 - 236322

Published: Jan. 30, 2025

Language: Английский

---

First-principles design of a superior electrocatalyst to Pt for hydrogen production in alkaline media

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Elucidation of the key mechanism inactive Pt catalyst for hydrogen production in alkaline media and description two control factors catalytic activity a pseudo-binary Pt–M catalyst.

Language: Английский

---