Electrocatalytic hydrogen evolution performance of RuO2 nanorods grown on top of WO3 nanotube arrays DOI
Man Zhang,

Jingxiao Ren,

Kefeng Wang

и другие.

Опубликована: Апрель 3, 2025

Abstract Water electrolysis has been deemed as a simple, safe, and clean way to realize sustainable hydrogen production. However, efficacious water for production is highly dependent on efficient stable electrocatalysts. Herein, we report nanorod/nanotube array composite electrocatalyst toward evolution reaction (HER) in both basic acidic electrolytes. For the composite, One-dimensional RuO2 nanorods (NRs) were grown top of WO3 nanotube arrays (NTA) through facile solution impregnation method followed by high-temperature calcination. The obtained NRs/WO3 NTA demonstrates superb electrocatalytic activity HER medias. To achieve current density 10 mA cm− 2, required overpotentials are 33 mV 1 M KOH 62 0.5 H2SO4, respectively. Furthermore, also shows an excellent long-term electrochemical stability alkaline superior most reported RuO2-based Ru-based electrocatalysts, even comparable state-of-the-art Pt/C catalyst. could be attributed structural merits including large surface area with abundant catalytically active sites, specific charge transport channel ensuring enhanced kinetics favorable bubble formation release. present work sheds new light designing novel one-dimensional structures generation. Simultaneously, designed structure this expected applied other energy conversion devices.

Язык: Английский

Enhanced Tri‐Atom Ru‐Based Catalyst for Hydrogen Evolution Reaction via Rapid Pyrolysis of Precursor DOI Open Access
Xiaoyang Ren, Mengjiao Li, Kaiyue Wang

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Atomically precise supported nanocluster catalysts (APSNCs), with well‐defined metal active sites, unique geometrical and electronic structures metal–metal bonds, demonstrate excellent catalytic performance. However, the synthesis of APSNCs centers stable remains a huge challenge due to uncontrollable aggregation during reactions. Herein, Ru 3 uniformly dispersed on oxidized carbon nanotubes (Ru /OCNT) is successfully synthesized by using rapid pyrolysis precursor strategy. The obtained /OCNT exhibits performance for alkaline hydrogen evolution reaction (HER). catalyst achieves an overpotential 19 mV at current density 10 mA cm −2 in 1 m KOH solution, outperforming commercial 20 wt.% Pt/C 5 Ru/C. Moreover, mass activity 23.47 11.83 times higher than that Density functional theory (DFT) calculations reveal interaction metal–support effectively modulate structure atoms, lower adsorption energy site, promote H* desorption. This work offers new perspective design

Язык: Английский

Процитировано

0
Electrocatalytic hydrogen evolution performance of RuO2 nanorods grown on top of WO3 nanotube arrays DOI
Man Zhang,

Jingxiao Ren,

Kefeng Wang

и другие.

Опубликована: Апрель 3, 2025

Abstract Water electrolysis has been deemed as a simple, safe, and clean way to realize sustainable hydrogen production. However, efficacious water for production is highly dependent on efficient stable electrocatalysts. Herein, we report nanorod/nanotube array composite electrocatalyst toward evolution reaction (HER) in both basic acidic electrolytes. For the composite, One-dimensional RuO2 nanorods (NRs) were grown top of WO3 nanotube arrays (NTA) through facile solution impregnation method followed by high-temperature calcination. The obtained NRs/WO3 NTA demonstrates superb electrocatalytic activity HER medias. To achieve current density 10 mA cm− 2, required overpotentials are 33 mV 1 M KOH 62 0.5 H2SO4, respectively. Furthermore, also shows an excellent long-term electrochemical stability alkaline superior most reported RuO2-based Ru-based electrocatalysts, even comparable state-of-the-art Pt/C catalyst. could be attributed structural merits including large surface area with abundant catalytically active sites, specific charge transport channel ensuring enhanced kinetics favorable bubble formation release. present work sheds new light designing novel one-dimensional structures generation. Simultaneously, designed structure this expected applied other energy conversion devices.

Язык: Английский

Процитировано

0