Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.270
Publication date: 16th December 2024
Electrolytic water splitting is a clean and sustainable way of producing hydrogen gas, which has huge potential as a fuel source. There is a vast range of materials that can replace expensive state-of-the-art catalysts, and Transition metal oxides (TMOs)-based catalysts are currently under consideration due to their cost-efficient nature and abundance. However, their poor conductivity presents a major challenge. To address this issue, MXenes have emerged as a promising option to be integrated with TMOs thanks to numerous beneficial properties, such as high conductivity, hydrophilicity, and tunneling capacity, which makes them an excellent choice as a mechanically stable and conductive material [1]. To enhance the electrochemical activity and stability of Ti3C2Tx MXenes, the control of surface functionalization and area is paramount. In this regard, this study utilizes HF in situ generation to remove Al-elements for the direct production of delaminated Ti3C2Tx, and, consequently, exposing their high surface area. In this study, Ni-based MXene composites were fabricated with varying MXene content to investigate the effect of the MXene on the OER. The findings of this study provide a comprehensive understanding of the Ti3C2Tx MXenes influence on OER activity in terms of Ni dissolution, and electro-mechanic-chemical-stability, thus providing valuable insights for their implementation and the importance of MXenes content optimization in hybrid electrocatalysts for OER.
We gratefully acknowledge the Helmholtz Association's Initiative and Networking Fund (Helmholtz Young Investigator Group VH-NG-1719) for the funding. M.P.B greatly acknowledges support from the German Federal Ministry of Education and Research in the framework of the project Catlab (03EW0015A/B).
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