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DOI Prefix: 10.47001/IRJIET
Vol 6 No 11 (2022): Volume 6, Issue 11, November 2022 | Pages: 84-90
International Research Journal of Innovations in Engineering and Technology
OPEN ACCESS | Research Article | Published Date: 28-11-2022
The main challenge in meeting energy needs is balancing demand and supply in addition to the negative impact of energy use on the environment. Currently, most of the energy needs are supplied by fossil fuels whose sources are limited while their demand continues to increase. Efforts to overcome these challenges by developing environmentally friendly energy, one of which is hydrogen energy. One way to get hydrogen is through electrolysis. One of the components of electrolysis is the electrode. The effectiveness of the electrode depends on the surface area, pore structure, and pore distribution. In this paper, we discuss the process of making porous electrodes and determine the effect of porosity on resistivity and compressive strength. The process of making porous electrodes is carried out by adding a pore former with variations of 5%, 10%, and 15% of the total weight of graphite powder, then mixed with a mixer. A homogeneous mixture was added with polyvinyl alcohol as a binder at 4% wt. Powder that has been mixed with polyvinyl alcohol is molded in the form of a cylinder with a pressure of 28 MPa. The green compact was sintered at a temperature of 1200°C with a heating rate of 5°C/min, and a holding time of 1 hour. The sintered product was characterized by porosity, compression, SEM, and resistivity tests. The results showed that the highest compressive strength obtained was 6.809 MPa at a porosity of 27.47% and the highest resistivity was obtained at 0.1757 Ω. meter at a porosity of 39.41%.
Electrodes, graphite, pore formers, porosity
Sulistyo, Sri Nugroho, Djoeli Satrijo, Hafiz Rahmat Fikri, “Manufacture and Characterization of Porous Electrodes Using Graphite Materials” Published in International Research Journal of Innovations in Engineering and Technology - IRJIET, Volume 6, Issue 11, pp 84-90, November 2022. Article DOI https://doi.org/10.47001/IRJIET/2022.611010
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