Work

Amorphous RuS 2 electrocatalyst with optimized active sites for hydrogen evolution

Year: 2019

Type: article

Abstract: Transition metal chalcogenides have attracted much attention as high-performance electrocatalysts for hydrogen evolution reaction (HER). Here, we synthesized an efficient HER electrocatalyst of amorphous ruthenium sulfide (A-RuS 2 ), exhibiting an overpotential of 141 mV at the current density of 10 mA cm −2 and a Tafel slope of 65.6 mV dec −1 . Experiments demonstrate amorphous RuS 2 has much better catalytic activity than that of its crystalline counterparts. Our study shows that amorphous RuS 2 has increased intrinsic activity and active sites. This work provides a feasible strategy for the development of HER electrocatalysts in amorphous state.

Source: Nanotechnology

DOI: 10.1088/1361-6528/ab62d3

Authors: Yongji Xia, Wenqi Wu, Hao Wang, Senlin Rao, Fayun Zhang, Guifu Zou

Institutions: Xinyu University, Soochow University, Nanyang Technological University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: National Natural Science Foundation of China, Priority Academic Program Development of Jiangsu Higher Education Institutions, National Key Research and Development Program of China