Dervis Emre Demirocak
Permanent URI for this collectionhttps://hdl.handle.net/10657.1/1655
Dr. Dervis Emre Demirocak joined the Mechanical Engineering Program at College of Science and Engineering as an assistant professor in 2019. His interests broadly comprise developing advanced materials and elucidating the fundamental mechanisms for renewable/clean energy, energy storage and heat transfer applications. More specifically;
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Hydrogen storage
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Carbon capture and storage
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Li-ion batteries
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Solar thermal technologies
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Item A Fuzzy Based Model for Standardized Sustainability Assessment of Photovoltaic Cells(2018) Salim, M. B.; Demirocak, Dervis Emre; Barakat, N.In this paper, a new environmental sustainability indicator (ESI) is proposed to evaluate photovoltaic (PV) cells utilizing Life Cycle Analysis (LCA) principles. The proposed indicator is based on a model that employs a fuzzy logic algorithm to combine multiple factors, usually used in multiple LCAs, and produce results allowing a comprehensive interpretation of LCA phase sub-results leading to standardized comparisons of various PV cells. Such comparisons would be essential for policymakers and PV cell manufacturers and users, as they allow for fair assessment of the environmental sustainability of a particular type of PV with multiple factors. The output of the proposed model was tested and verified against published information on LCAs related to PV cells. A distinct feature of this fuzzy logic model is its expandability, allowing more factors to be included in the future, as desired by the users, or dictated by a new discovery. It also provides a platform that can be used to evaluate other families of products. Moreover, standardizing the comparison process helps in improving the sustainability of PV cells through targeting individual relevant factors for changes while tracking the combined final impact of these changes on the overall environmental sustainability of the PV cell.Item Hydrogen Storage in the Li-Mg-N-H System–Ammonia Suppression By Addition of Ru Doped Single Walled Carbon Nanotubes(2015-07-11) Demirocak, Dervis Emre; Srinivasan, S. S.; Kuhn, J. N.; Muralidharan, R.; Li, X.; Goswami, D. Y.; Stefanakos, E. K.Abstract not available.Item Investigation of polyaniline nanocomposites and cross-linked polyaniline for hydrogen storage(14th International Conference on Advances in Materials & Processing Technologies, 2011-07-13) Demirocak, Dervis Emre; Kuravi, S.; Ram, M. K.; Jotshi, C. K.; Srinivasan, S. S.; Kumar, A.; Goswami, D. Y.; Stefanakos, E. K.Abstract not available.Item Passive Design Strategies to Minimize Building Energy Use in Hot and Humid Climates(2017-06-26) Demirocak, Dervis EmreAbstract not available.Item Probing the aging effects on nanomechanical properties of a LiFePO4 cathode in a large format prismatic cell(Elsevier B.V, 2015) Demirocak, Dervis Emre; Bhushan, B.Li-ion batteries offer great promise for the future of energy storage due to their superior gravimetric and volumetric energy density. One of the challenges in promoting their expanded use is to improve the cycle life of Li-ion batteries. This requires detailed understanding of the aging phenomenon. The aging mechanism of Li-ion batteries can have both chemical and mechanical origins. While the chemical degradation mechanisms have been studied extensively, mechanical degradation mechanisms have received little attention so far. In this study, we probe the changes in mechanical properties of a LiFePO4 cathode in a large format prismatic cell. Results indicate that mechanical degradation increases by aging; in addition, local degradation is observed in the composite cathode. Implications of the degradation in mechanical properties on binder degradation are discussed in detail.Item Reversible Hydrogen Storage Characteristics of Catalytically Enhanced Ca(Li)-nMg-B-N-H System(American Physical Society, 2013-04-13) Demirocak, Dervis Emre; Srinivasan, S. S.; Sharma, P.; Goswami, D. Y.; Stefanakos, E. K.Abstract not available.Item A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries(2017) Demirocak, Dervis Emre; Srinivasan, S. S.; Stefanakos, E. K.Li-ion batteries are the key enabling technology in portable electronics applications, and such batteries are also getting a foothold in mobile platforms and stationary energy storage technologies recently. To accelerate the penetration of Li-ion batteries in these markets, safety, cost, cycle life, energy density and rate capability of the Li-ion batteries should be improved. The Li-ion batteries in use today take advantage of the composite materials already. For instance, cathode, anode and separator are all composite materials. However, there is still plenty of room for advancing the Li-ion batteries by utilizing nanocomposite materials. By manipulating the Li-ion battery materials at the nanoscale, it is possible to achieve unprecedented improvement in the material properties. After presenting the current status and the operating principles of the Li-ion batteries briefly, this review discusses the recent developments in nanocomposite materials for cathode, anode, binder and separator components of the Li-ion batteries.Item Simulation of the Advanced Adsorption Cooling Cycles for Metal Organic Frameworks(2017-11-03) Demirocak, Dervis Emre; Kolatkar, Y.Abstract not available.Item Synergistic Effects of MWCNT and Nb2O5 on the Hydrogen Storage Characteristics of Li-nMg-B-N-H System(The American Ceramic Society 2016 Materials Challenges in Alternative & Renewable Energy, 2016-04-17) Demirocak, Dervis Emre; Srinivasan, S. S.; Goswami, D. Y.; Stefanakos, E. K.Abstract not available.Item Thermal gravimetric and volumetric hydrogen desorption in LiNH2-nanoMgH2(2010-09-28) Demirocak, Dervis Emre; Srinivasan, S. S.; Goswami, D. Y.; Stefanakos, E. K.Abstract not available.