Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Book Part Citation - Scopus: 5Potential of Bacterial Cellulose for Sustainable Cities: a Review and Bibliometric Analysis on Bacterial Cellulose(Springer International Publishing, 2023) Kale, İ.; K, I, Rdök, O.; Bilgi, E.; Akyol-Altun, T.D.; Tokuç, A.; Köktürk, G.; Özkaban, F.This book chapter focuses on bacterial cellulose (BC), with many recent contemporary studies, an explanation of BC producers and synthesis mechanisms, and a summary of their production methods. Few studies are directly related to sustainability with BC, a promising biomaterial for different solutions due to its properties. Thus, a comprehensive review of BC and research trends in this area are evaluated by bibliometric analysis. The distribution of publications by years, influential countries, organizations, journals, authors, citation analysis, distribution of publications by scientific disciplines, keyword analysis, and research focuses are emphasized. Scientific publications were taken from the WoS database, and graphics were created with the “VOSviewer” and “Carrot2” programs. According to the analysis, studies on BC started in 1980, but studies on sustainability were found in 2005 and later. It has also been observed that studies on BC in materials science have increased significantly in 2016 and beyond. Finally, bacterial cellulose has been discussed in line with the UN’s Sustainable Development Goals. Therefore it can be said that there is a potential for use in the textile, architecture, and food packaging sectors, and more detailed research is still needed. As a result, the dissemination of BC-related studies in these areas has great potential for a completely sustainable production method. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.Review Citation - WoS: 18Citation - Scopus: 18A Review on New Cobalt-Free Cathode Materials for Reversible Solid Oxide Fuel Cells(Chulalongkorn Univ, Metallurgy & Materials Science Research Inst, 2023) Akkurt, Sedat; Sındırac, Can; Özmen Egesoy, Tuğce; Ergen, EmreThe exponential growth in the requirement of fuel cells and batteries leads to increased demand for cobalt due to its common use in high-performance Li-ion batteries and high-temperature fuel cells/electrolyzers. This sharp increment in demand raises concern about the availability of limited reserves of cobalt which can impact the price of cobalt. Moreover, the geographic limitations of cobalt resources may endanger the whole supply chain. In addition to all those, huge moral issues of cobalt mining are also another problem. Hence, leading battery, fuel cells and electrolyzer manufacturers are looking for sustainable alternatives to reduce cobalt dependency. A more specific limitation is shown in Solid Oxide Fuel Cells (SOFCs) cathode materials that contain cobalt. Incompatibilities have already been observed between the cathode materials containing cobalt and the electrolytes in terms of the thermal expansion coefficient mismatch during the transition of the operating temperature from high to low. An advantage of low operating temperatures is the reduction of material costs compared to high temperature. Increasing the electrochemical performance of the cell and eliminating thermal expansion coefficient difference problems are in concert aimed at the development of cobalt-free cathode materials. Therefore, cobalt-free cathode materials are vital for the sustainability of SOFCs and green transition of the energy sector since they can be used as cathode and anode material in symmetrical SOFCs which is also known as reversible SOFC (RSOFC). In this review, we comprehensively summarize the recent advances of cobalt-free perovskite cathode materials for intermediate temperature RSOFCs.