Real-Time Modulation of Hydrogen Evolution Activity of Graphene Electrodes Using Mechanical Strain
Source abstract
Abstract
This paper reports the effect of mechanically applied elastic strain on the hydrogen evolution reaction (HER) activity of graphene under acidic conditions. An applied tensile strain of 0.2% on a graphene electrode is shown to lead to a 1-3% increase in the HER current. The tensile strain increases HER activity, whereas compressive strain decreases it. Density functional theory (DFT) calculations using a periodic graphene slab model predict an increase in the adsorption energy of the H atom with growing tensile strain, consistent with an enhancement of the current density in HER, similar to that observed experimentally.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Graphene research and applications · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
National Energy Technology Laboratory, United States Department of Energy, Pittsburgh, Pennsylvania 15236, United States
Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
Funding
Division of Chemistry · Division of Chemical, Bioengineering, Environmental, and Transport Systems
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