Speaker
Description
Nowadays, a huge global problem is climate change leading to increasing atmosphere pollution through the emission of carbon dioxide (CO2)1. The running out of non-renewable energy sources is driving scientists to look for better solutions to slow down the climate collapse.
The process of electrochemical splitting of water in two successive reactions: the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), generates H2 used directly as green energy. The selection of a suitable catalyst for these reactions is crucial, due to the limiting oxygen evolution reaction. Transition metal compounds are proving to be a decent, more affordable substitute of standard noble metal catalysts2. They exhibit high catalytic activity, conductivity, good stability.
Therefore, the aim of this study was to synthesize a nickel phosphide based on a carbonized cellulose fibers, used as an electrocatalyst in the OER reaction, and to modify the obtained material with iron. The morphology of materials was investigated by various techniques. Electrochemical tests of the samples showed enhanced performance compared to the reference RuO2.
Acknowledgments: This research has received funding from National Science Centre (Poland) with grant PRELUDIUM20 number 2021/41/N/ST5/03202
Keywords: nickel phosphide, electrocatalysts, oxygen evolution reaction.
References
1. Balat, M.; Balat, M. Political, economic and environmental impacts of biomass-based hydrogen; Inter. J. Hydro. En. 2009, 34 (9), 3589-3603. https://doi.org/10.1016/j.ijhydene.2009.02.067.
2. Xiang, D.; Zhang, B. et al. One-Step Synthesis of Bifunctional Nickel Phosphide Nanowires as Electrocatalysts for Hydrogen and Oxygen Evolution Reactions. Front. Chem. 2021, 9, 773018. https://doi.org/10.3389/fchem.2021.773018
