Abstract
Hydrogen is a clean fuel that can power vehicles with high efficiency and produce water as the only byproduct. However, hydrogen technologies face challenges that include low volumetric storage capacity. One way to increase volumetric capacity is to store hydrogen in solid state materials. MXenes represent the fastest-growing family of 2D transition metal carbides and nitrides. Owning to their attractive properties, such as redox-active surfaces, metallic conductivity, and hydrophilicity, MXenes have been intensively studied for applications in electrocatalysis and electrochemical energy storage. Recently, Ti2CTx MXene was claimed to store over 8 wt% hydrogen. Since MXenes are also electrocatalysts for hydrogen production, investigating hydrogen storage while it is produced on the same material electrode is a promising direction. In this study, we investigated the effect of electrochemical hydrogen production and storage in Ti3C2Tx MXene on cell pressure in a sulfuric acidic electrolyte.
Publisher
The Electrochemical Society