Design computacional e impressão de eletrodos porosos para confecção de gerador de hidrogênio do tipo Membraneless

Abstract

The combination of computational design and additive manufacturing is transforming the production of energy devices, such as membraneless hydrogen generators. Computational design involves the use of simulations and digital modeling to optimize the characteristics of porous electrodes. Through 3D modeling, it is possible to predict and adjust the structure of the electrodes, enhancing their efficiency. This process includes the optimization of porosity, geometry, and flow channel distribution, which are essential for improving the electrochemical reaction and electrode conductivity. Using 3D printers and specific materials, it is possible to create electrodes with high surface area and a controlled porous network. The main goal of this thesis was to develop topological structures based on TPMS-type functions to generate porous electrodes for the assembly of membraneless electrolyzers. By combining computational modeling, 3D printing, and conductive composite preparation, it was possible to fabricate electrodes with Schwarz P-type geometries, exhibiting good electrical properties. Furthermore, through an electrochemical electroplating process, the electrode was coated with a nickel layer over copper (Ni@Cu), which showed better hydrogen generation results from alkaline water electrolysis compared to the uncoated electrode. In conclusion, the process proved to be promising for the fabrication of electrodes for membraneless systems.