Issue 17, 2024

Architecting a 1T-phase material with metal NPs enriching HER kinetics in alkaline and seawater electrolytes

Abstract

Creating sophisticated and captivating electrocatalysts to produce hydrogen is extremely attractive but highly challenging with noble metal (NM)-free catalysts. The production of hydrogen fuel through seawater electrolysis is an advancing sustainable alternative for mass utilization. In this work, we constructed CuS nanoparticles (NPs) on a thin 1T phase of WS2/WO3 heterointerface, stabilized by ammonium ion (NH4+) intercalation (Cu@1T-N-W NSs). The developed NPs on a thin metallic sheets achieves high electrical conductivity and enhanced intrinsic activity in all of the edges and both basal planes. The Cu@1T-N-W NS required only 121.8 mV and 158.2 mV to achieve 10 mA cm−2 in 1 M KOH and natural seawater + 1 M KOH electrolytes, respectively. An operando EIS study reveals the complete electron-ion transportation and faster kinetics with various potentials. This work provides a unique path to design an NM-free catalyst with a stable metallic 1T phase for efficient hydrogen generation in alkaline and seawater electrolysis.

Graphical abstract: Architecting a 1T-phase material with metal NPs enriching HER kinetics in alkaline and seawater electrolytes

Supplementary files

Article information

Article type
Research Article
Submitted
08 Apr 2024
Accepted
28 Jun 2024
First published
19 Jul 2024

Inorg. Chem. Front., 2024,11, 5612-5623

Architecting a 1T-phase material with metal NPs enriching HER kinetics in alkaline and seawater electrolytes

M. Prasanna, H. B. Kwak, M. J. Oh and D. J. Yoo, Inorg. Chem. Front., 2024, 11, 5612 DOI: 10.1039/D4QI00892H

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