| Hydrogen production from electrolytic water is an important development direction in the future energy field,but the main reason hindering its industrialization is the lack of efficient and stable hydrogen evolution catalysts.In this paper,the following work has been carried out around the preparation of ruthenium（Ru）based catalysts:Preparation of Ru based catalysts using carbonized phenolic resin and modified lignin as carriers to support Ru nanoparticles,and systematic study of their electrocatalytic activity and mechanism.（1）Phenolic resin was prepared by the template method using the S method,followed by high-temperature carbonization to prepare a diameter of about0.2-0.5μm of spherical carbon based material SCBM,and then Ru metal was loaded by hydrothermal method to form catalyst samples Ru@SCBM.In 1 M KOH medium,the series of samples have good electrocatalytic activity for HER.Ru2.0@SCBM700-700 exhibits the best catalytic activity,with a required over potential of only 72.6 m V and a Tafel slope of 71.1 m V dec-1 at a current density of 10 m A cm-2.It also exhibits better stability than commercial 20%Pt/C.This study can provide a new strategy for the preparation of high-performance and tolerant Ru-based electrocatalysts in alkaline media.（2）Lignin（LA）was used as raw material,modified and carbonized at high temperature as carbon based material MLC（Modified Lignin Carbon）,and finally Ru metal was loaded by hydrothermal or one pot method to form catalyst samples Ru@MLC.In 1 M KOH medium,The Ru0.8@MLC display the best catalytic activity.When the current density was 10 m A cm-2,over potential of Ru0.8@MLC just 35.6 m V and a Tafel slope was 31.7 m V dec-1.It also exhibits better stability than commercial 20%Pt/C.This work provides a basis for the synthesis of new catalysts with high efficiency,high stability,and low cost,and provides a reasonable way to explore and develop catalysts in the field of environment and energy. |
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