Amorphization activated ruthenium-tellurium nanorods for efficient water splitting

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Efficient electrocatalysts are crucial for water splitting, particularly for the oxygen evolution reaction (OER).
• The sluggish kinetics of OER hinder the development of sustainable energy technologies.

Purpose of the Study:

• To identify and fabricate a robust electrocatalyst for efficient oxygen evolution reaction (OER).
• To investigate the theoretical underpinnings of amorphous RuTe2 for enhanced OER performance.

Main Methods:

• Theoretical calculations to understand the electronic properties of amorphous RuTe2.
• Fabrication of amorphous RuTe2 porous nanorods (PNRs).
• Electrochemical testing in acidic water splitting conditions.

Main Results:

• Theoretical calculations revealed that local distortion-strain effects in amorphous RuTe2 enhance Te-pπ coupling and Ru-site electron transfer.
• Amorphous RuTe2 PNRs achieved a cell voltage of 1.52 V at a current density of 10 mA cm⁻² in acidic water splitting.
• Defect sites combined with oxygen atoms formed RuOxHy species, promoting OER activity.

Conclusions:

• Amorphous RuTe2 PNRs show excellent performance as electrocatalysts for OER.
• Theoretical insights guide the rational design of amorphous materials for advanced electrocatalysis.
• This study provides valuable understanding for developing durable and active water-splitting electrocatalysts.