Rapid Joule heating fabrication of Ru cluster-loaded WO3 on carbon nanotubes to enhance alkaline electrocatalytic hydrogen production activity

被引：0

作者：

Li, Xiang ^{[1
]}

Huang, Kelei ^{[2
]}

Meng, Xiangchao ^{[1
]}

机构：

[1] Ocean Univ China, Coll Chem & Chem Engn, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Shandong, Peoples R China

[2] Guangxi Univ, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning 530004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1004卷

关键词：

Electrocatalysts; Ru clusters; Carbon nanotube; Rapid Joule heating; HER; WO3; EVOLUTION; EFFICIENT; NANOSHEETS;

D O I：

10.1016/j.jallcom.2024.175885

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：

The design of efficient electrocatalysts for hydrogen evolution reaction (HER) suitable for industrial applications remains a challenging task. In this work, Ru clusters were loaded onto WO3 3 which were grown on carbon nanotubes (WRu/C-JH) using a rapid Joule heating method. The crystal phases of WO3 3 was transformed, and abundant active sites were exposed during the rapid heating and cooling process. All these modifications contributed to the greatly improved electrocatalytic activity in HER. As tested, in 1 M KOH, it only required an overpotential of 22 mV to reach 10 mA cm-- 2 and 401 mV to reach a high current density of 1 A cm-- 2 on WRu/CJH. Moreover, WRu/C-JH demonstrated excellent stability at 500 mA cm-- 2 for 100 h. Furthermore, a two- electrode system was constructed to assess overall water splitting performance of WRu/C-JH. This system was capable of reaching 100 mA cm- 2 at a low voltage of 1.94 V. The mechanism of the enhancement in HER for as- prepared sample was also deeply discussed.

引用

页数：6