High-temperature shock enabled synthesis of ultrafine Ru nanoparticles anchoring onto tungsten carbide with strong metal-support interaction for ampere-level current density hydrogen evolution

被引：4

作者：

Wang, Chengbin ^{[1
]}

Li, Ping ^{[1
]}

Zong, Lingbo ^{[1
]}

Fan, Kaicai ^{[2
]}

Lu, Fenghong ^{[1
]}

Wang, Zumin ^{[3
]}

Wang, Lei ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Qingdao 266042, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[3] Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, 1 North 2nd St, Beijing 100190, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 967卷

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

High-temperature shock; Ultrafine Ru nanoparticles; Metal-support interaction; Ampere-level current density; Hydrogen evolution reaction; NANOCLUSTERS;

D O I：

10.1016/j.jallcom.2023.171667

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Developing cost effective, active and durable alternatives to platinum electrocatalysts is the major challenge for sustainable hydrogen production. Rational design and controlled synthesis of hybrid structures with strong metal-support interaction may offer a feasible strategy to achieve efficient and stable hydrogen evolution re-action (HER). Herein, a low cost and high-performance ultrafine Ru nanoparticles anchored tungsten carbide (Ru/WC) HER electrocatalyst is successfully prepared by high-temperature shock (HTS) technology, which can be accomplished in less than 0.5 s. In a strong alkaline medium, the as-prepared Ru/WC exhibits a low over-potential of 4 mV and 72 mV at the current densities of 10 mA cm-2 and 100 mA cm-2, respectively. Low Tafel slope of 44 mV dec- 1, high turnover frequency (TOF) of 2.55 s-1 at an overpotential of 100 mV, long-term electrochemical stability up to 150 h, and ampere-level current density can be achieved. Furthermore, Ru/WC also shows exceptional activity and stability under acidic conditions. Notably, Ru/WC can accommodate HER current density as high as 2000 mA cm-2 at a small overpotential of 365 mV, which holds great promises for industrial large-scale production. This work provides a simple, rapid, and solvent-free strategy for synthesizing high efficiency HER electrocatalyst with ampere-level current density.

引用

页数：8