Preparation of a High-Performance Catalyst Derived from Modified Lignin Carbon for the Hydrogen Evolution Reaction of Electrolyzed Water

Abstract

Hydrogen energy is a plentiful and environmentally friendly form of secondary energy that could play a crucial role in achieving global energy sustainability. At the same time, the electrolysis of water for hydrogen production is a significant future-oriented advancement in the energy sector, whereas appropriate hydrogen evolution catalysts have always been the key to hydrogen evolution reactions. In this study, lignin was utilized as an appropriate raw material for modification in order to obtain carbon materials, which was then supported with Ru to prepare an Ru0.8@MLC catalyst. At a current density of 10 mA cm−2, the required overpotential was a mere 35.6 mV and the slope of Tafel was 31.7 mV dec−1. This study provides a feasible strategy and pathway for preparing highly efficient electrocatalysts for the hydrogen evolution reaction.

Keywords

• ruthenium nanoparticles
• lignin
• modification
• hydrogen evolution reaction