Experimental and model based investigation of overpotentials during oxygen reduction reaction in silver based gas diffusion electrodes is popular PDF and ePub book, written by David Franzen in 2021-10-26, it is a fantastic choice for those who relish reading online the Science genre. Let's immerse ourselves in this engaging Science book by exploring the summary and details provided below. Remember, Experimental and model based investigation of overpotentials during oxygen reduction reaction in silver based gas diffusion electrodes can be Read Online from any device for your convenience.
Experimental and model based investigation of overpotentials during oxygen reduction reaction in silver based gas diffusion electrodes Book PDF Summary
Chlorine is one of the most important basic chemicals, which is used directly or indirectly in the production of around 60 % of all chemical products. The production is almost exclusively based on energy intensive electrolysis processes, with an average of 2.5 – 3.5 MWh of electrical energy required per ton of chlorine generated. This means that chlorine production alone accounts for around 3 % of the electrical energy used worldwide in industry. By using oxygen depolarized cathodes (ODC), it is possible to reduce the demand for electrical energy on an industrial scale by about 25 %. Instead of hydrogen evolution, oxygen reduction takes place. Due to the low solubility of oxygen, the electrode is designed as a gas-diffusion electrodes (GDE). These are porous silver-based electrodes with hydrophobic regions due to the use of polytetrafluoroethylene (PTFE). During operation, the liquid electrolyte penetrates the pore structure, but the PTFE prevents complete flooding of the electrode. Oxygen is supplied via a gas compartment and enters the internal structure of the electrode. A three-phase interface is formed, consisting of liquid electrolyte, gas and catalytically active solid, at which the electrochemical reaction takes place. Although the technology is already successfully used industrially, many processes, especially the electrolyte distribution, inside the GDE remain unknown. In this dissertation, the influence of PTFE is first systematically investigated. Subsequently the process is described in a pseudo-2D model supported by operando experiments. Finally, the exact penetration depth of the electrolyte is analyzed using specially designed electrodes.
Detail Book of Experimental and model based investigation of overpotentials during oxygen reduction reaction in silver based gas diffusion electrodes PDF
- Author : David Franzen
- Release : 26 October 2021
- Publisher : Cuvillier Verlag
- ISBN : 9783736965140
- Genre : Science
- Total Page : 136 pages
- Language : English
- PDF File Size : 7,9 Mb
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