The development of a fully integrated 3D printed electrochemical platform and its application to investigate the chemical reaction between carbon dioxide and hydrazine

• Published in: Electrochimica acta 2020-11, Vol.360, p.136984-136984, Article 136984
• Main Authors: Giorgini Escobar, João, Vaněčková, Eva, Nováková Lachmanová, Štěpánka, Vivaldi, Federico, Heyda, Jan, Kubišta, Jiří, Shestivska, Violetta, Španěl, Patrik, Schwarzová-Pecková, Karolina, Rathouský, Jiří, Sebechlebská, Táňa, Kolivoška, Viliam
• Format: Article
• Language: English
• Subjects: 3-D printers; 3D printing; CAD; Carbon dioxide; Carbon nanotubes; Chemical reactions; Computer aided design; Electrochemical cells; Electrochemical measurements; Electrochemical oxidation; Electrodes; Finite element method; Fused deposition modeling; Hydrazine; Hydrazines; Mathematical models; Numerical simulations; Polyamide resins; Polylactic acid; Stoichiometry; Three dimensional models; Three dimensional printing
• ISSN: 0013-4686; 1873-3859; 0013-4686
• DOI: 10.1016/j.electacta.2020.136984

•An integrated electrochemical platform was manufactured by bi-material 3D printing.•It was applied to investigate the reaction between hydrazine and carbon dioxide.•Experimental results were supported by finite-element method numerical simulations. The combination of computer assisted design and 3D printing has recently enabled fast and inexpensive manufacture of customized ‘reactionware’ for broad range of electrochemical applications. In this work bi-material fused deposition modeling 3D printing is utilized to construct an integrated platform based on a polyamide electrochemical cell and electrodes manufactured from a polylactic acid-carbon nanotube conductive composite. The cell contains separated compartments for the reference and counter electrode and enables reactants to be introduced and inspected under oxygen-free conditions. The developed platform was employed in a study investigating the electrochemical oxidation of aqueous hydrazine coupled to its bulk reaction with carbon dioxide. The analysis of cyclic voltammograms obtained in reaction mixtures with systematically varied composition confirmed that the reaction between hydrazine and carbon dioxide follows 1/1 stoichiometry and the corresponding equilibrium constant amounts to (2.8 ± 0.6) × 103. Experimental characteristics were verified by results of numerical simulations based on the finite-element-method. [Display omitted]