Issue 7, 2022

Large-scale production of a low-cost molybdenum dioxide–phosphide seamless electrode for high-current-density hydrogen evolution

Abstract

Herein, we report the large-scale production of a molybdenum oxide–phosphide (MoO2–MoP) seamless electrode (SE) that is vertically grown on cheap industrial-grade molybdenum substrates (e.g. molybdenum plate, molybdenum mesh, or molybdenum wire) using a facile solid-state synthesis method, which is suitable for various devices under complex application conditions. These features give the seamless electrode a mechanically robust and excellent electrical contact between the MoO2–MoP catalyst and Mo substrate, leading to high HER activity and excellent durability, together with a low overpotential of 362 mV to achieve a current density of 800 mA cm−2. Surprisingly, the MoO2–MoP mesh electrode affords a current density of 1000 mA cm−2 at 293 mV in 1.0 M KOH solution, while it needs an overpotential of only 215 mV to achieve the same current density in 5.0 M KOH solution, which is suitable for practical alkaline hydrogen production. This work throws light on the rational design of the large-scale production of electrocatalysts for efficient hydrogen production at the industrial level.

Graphical abstract: Large-scale production of a low-cost molybdenum dioxide–phosphide seamless electrode for high-current-density hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
15 Dec 2021
Accepted
04 Jan 2022
First published
06 Jan 2022

J. Mater. Chem. A, 2022,10, 3454-3459

Large-scale production of a low-cost molybdenum dioxide–phosphide seamless electrode for high-current-density hydrogen evolution

C. Jian, Q. Cai, W. Hong and W. Liu, J. Mater. Chem. A, 2022, 10, 3454 DOI: 10.1039/D1TA10678C

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