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Advances in filler-crosslinked membranes for hydrogen fuel cells in sustainable energy generation

International Journal of Hydrogen Energy 2025年 140卷 745-776页

作者： Islam, Aminul Shahriar, Mamun Islam, Md. Tarekul Teo, Siow Hwa Khan, M. Azizur R. Taufiq-Yap, Yun Hin Mohanta, Suman C. Rehan, Ariyan Islam Rasee, Adiba Islam Kubra, Khadiza Tul Hasan, Md. Munjur Salman, Md. Shad Waliullah, R.M. Hasan, Md. Nazmul Sheikh, Md. Chanmiya Uchida, Tetsuya Awual, Mrs Eti Hossain, Mohammed Sohrab Znad, Hussein Awual, Md. Rabiul Department of Petroleum and Mining Engineering Jashore University of Science and Technology Jashore7408 Bangladesh Hydrogen energy and CO2 conversion Lab Department of Petroleum and Mining Engineering Jashore University of Science and Technology Jashore7408 Bangladesh College of Engineering Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of Department of Chemistry Jashore University of Science and Technology Jashore7408 Bangladesh Department of Leather Engineering Faculty of Mechanical Engineering Khulna University of Engineering and Technology Khulna9203 Bangladesh Industrial Chemistry Program Faculty of Science and Natural Resources Universiti Malaysia Sabah Sabah Kota Kinabalu88400 Malaysia Catalysis Science and Technology Research Centre Faculty of Science Universiti Putra Malaysia Serdang 43400 Malaysia Department of Chemistry School of Science The University of Tokyo 7-3-1 Bunkyo-ku Tokyo113-0033 Japan Department of Chemistry of Science Osaka University Osaka560-0043 Japan Institute for Chemical Research Kyoto University Gokasho Kyoto Uji611-0011 Japan Division of Applied Chemistry of Natural Science and Technology Okayama University 1-1 Tsushima-naka 3-Chome Okayama700-8530 Japan Western Australian School of Mines: Minerals Energy and Chemical Engineering Curtin University GPO Box U 1987 PerthWA6845 Australia

Fuel cell membranes can be used in various ways to achieve zero-emission transport and energy systems, which offer a promising way to power production due to their higher efficiency compared to the internal combustion engine and the eco-environment. Perfluoro sulfonic acid membranes used for proton exchange membranes (PEMs) have certain drawbacks, like higher fuel permeability and expense, lower mechanical and chemical durability, and proton conductivity under low humidity and above 80 °C temperature. Researchers have drawn their attention to the production of polymer electrolyte membranes with higher proton conductivity, thermal and chemical resilience, maximum power density, lower fuel permeability, and lower expense. For sustainable clean energy generation, a review covering the most useful features of advanced material-associated membranes would be of great benefit to all interested communities. This paper endeavors to explore several types of novel inorganic fillers and crosslinking agents, which have been incorporated into membrane matrices to design the desired properties for an advanced fuel cell system. Membrane parameters such as proton conductivity, the ability of H2 transport, and the stability of the membrane are described. Research directions for developing fuel cell membranes are addressed based on several challenges suggested. The technological advancement of nanostructured materials for fuel cell applications is believed to significantly promote the future clean energy generation technology in practice. © 2025 The Authors

关键词： Crosslinking

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AN INVESTIGATION ON THE mechanical PROPERTIES OF SPCS 20

AN INVESTIGATION ON THE MECHANICAL PROPERTIES OF SPCS

引用

20th European Conference on Composite materials: Composites Meet Sustainability, ECCM 2022

作者： Liprandi, Daniele Jalali, Seyed Kamal Bertolla, Maddalena Dal Moro, Anacleto Battistini, Tiziano Pugno, Nicola Maria Laboratory for Bioinspired Bionic Nano Meta Materials & Mechanics Department of Civil Environmental and Mechanical Engineering University of Trento Via Mesiano 77 Trento38123 Italy Aquafil S.p.A. Via Linfano 9 Arco38062 Italy School of Engineering and Materials Science Queen Mary University of London Mile End Road LondonE1 4NS United Kingdom

ISBN: (纸本)9782970161400

Single-polymer composites (SPCs) are an available option as new recyclable material. Fibre-like elements are inserted in a polymeric matrix with the same chemical composition. The unique characteristics of the composite are given by the different crystallinity of the two phases, their geometrical distribution and the interphase between them. One primary advantage of SPCs is the relatively strong stiffness of the interphase between the fibres and the matrix, compared to other fibre-reinforced polymeric composites (FRPs). However, the separation between the fibres and the matrix still plays a role, as it has been reported since the first works on SPCs. In this work, we use a Lattice Spring Model (LSM) to analyse how the mechanical properties of the interface affect the properties of the overall composite. Moreover, we investigate how the behaviours change when different geometries are considered. © 2022 Liprandi et al.

关键词： Fibers

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Optimal Generator Policy for Hybrid Fuel UAV under Airspace Noise Restrictions

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IFAC-PapersOnLine 2023年第3期56卷 25-30页

作者： Drew D. Scott Isaac E. Weintraub Satyanarayana G. Manyam David W. Casbeer Manish Kumar Department of Mechanical and Materials Engineering University of Cincinnati Cincinnati OH 45221 Control Science Center Air Force Research Laboratory Wright-Patterson AFB OH 45433 Infoscitex Corp. a DCS Company Dayton OH 45431

Here we study an optimal control problem involving energy management of a hybrid-fuel Unmanned Aerial Vehicle (UAV). The planning problem for a hybrid-fuel platform involves determining the path while managing the energy resources, which includes a policy for power modality switching whenever applicable. The hybrid-fuel platform considered here involves a generator and battery pack combined in a series fashion as energy sources on-board a UAV. Also included in the problem are the noise restrictions, which place constraints on generator operation depending on the airspace location. These emulate possible restrictions on UAV noise that occur in military surveillance missions or in urban path planning, where the collective noise of many UAVs, some with combustion engines, may be restricted in certain areas or times of the day. We present a hybrid methodology which starts from an initial path and generator pattern obtained from a mixed integer linear program (MILP) solution. The generator pattern from the discrete solution is then refined in an optimal control framework with an objective to minimize fuel usage, while considering the nonlinear battery and generator dynamics and noise-restriction constraints. Optimal control problem is solved with a nonlinear program solver, IPOPT. Numerical results are presented and analyzed with varying path lengths and scenarios. This work aims to serve as an initial study of this hybrid-fuel UAV problem within an optimal control framework, which can be extended to refinement of both the generator pattern and the trajectory in tandem, while considering vehicle and power dynamics that are often ignored in discrete path planning solutions.

关键词： UAV hybrid-fuel optimal control path planning optimization hybrid methods nonlinear programming

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3D printed architected lattice structures by material jetting

arXiv

引用

arXiv 2023年

作者： Mora, Samantha Pugno, Nicola M. Misseroni, Diego Laboratory for Bioinspired Bionic Nano Meta Materials and Mechanics Department of Civil Environmental and Mechanical Engineering University of Trento Italy School of Engineering and Materials Science Queen Mary University of London Mile End Road LondonE1 4NS United Kingdom

High-precision 3D printing technology opens to almost endless opportunities to design complex shapes present in tailored architected materials. The scope of this work is to review the latest studies regarding 3D printed lattice structures that involve the use of photopolymers fabricated by Material Jetting (MJ), with a focus on the widely used Polyjet and MultiJet techniques. The main aspects governing this printing process are introduced to determine their influence during the fabrication of 3D printed lattices. Performed experimental studies, considered assumptions, and constitutive models for the respective numerical simulations are analyzed. Furthermore, an overview of the latest extensively studied 3D printed architected lattice materials is exposed by emphasizing their achieved mechanical performances through the use of Ashby plots. Then, we highlight the advantages, limitations, and challenges of the material jetting technology to manufacture tunable architected materials for innovative devices, oriented to several engineering applications. Finally, possible approaches for future works and gaps to be covered by further research are indicated, including cost and environmental-related issues. Copyright © 2023, The Authors. All rights reserved.

关键词： 3D printing

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Effect of Different Hydrogen Fugacities on the Microstructure of Additively Manufactured Ti-6al-4v

SSRN

引用

SSRN 2023年

作者： Metalnikov, Polina Kaya, Ali Arslan Ben-Hamu, Guy Eliezer, Dan Department of Mechanical Engineering Sami Shamoon College of Engineering Ashdod77245 Israel Department of Material Engineering Ben-Gurion University of the Negev Beer-Sheva84105 Israel Department of Metallurgy and Materials Science and Engineering Mugla Sitki Kocman University Muğla48000 Turkey Department of Material Engineering Ben-Gurion University of the Negev 1 David Ben Gurion Blvd. Beer-Sheva8410501 Israel

In this study we compared the microstructural changes in the presence of hydrogen of Ti-6Al-4V alloy prepared by two different additive manufacturing (AM) methods: electron beam melting (EBM) and selective laser melting (SLM). Cathodic hydrogenation of AM Ti-6Al-4V resulted in significant expansion of β Ti phases due to the solute hydrogen, increasing of micro-strains, and α → titanium hydride/βH transformation. It was shown that SLM Ti-6Al-4V with acicular martensitic structure is more prone to hydrogen-induced phase transformation and hydrogen-assisted damage, comparing to EBM. Moreover, it was revealed that different hydrogen charging environments cause different microstructural changes in EBM Ti-6Al-4V. Unlike cathodic hydrogen charging, gaseous hydrogen charging at elevated temperature reduced the process-induced micro-strains and promoted Al redistribution within the EBM Ti-6Al-4V. This resulted in massive precipitation of brittle α2-Ti3Al intermetallic compound, which act as a strong hydrogen trapping site aside with the Ti hydride phase. © 2023, The Authors. All rights reserved.

关键词： Microstructure

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Localised Control of Phase Formation in a Carbon Bearing Steel by Laser Powder Bed Fusion

SSRN

引用

SSRN 2023年

作者： Davidson, Karl Peter Le, Tan Phuc Nguyen, Linh Lan Fronda, Jude Emil Pascua Liu, Ruiliang Meng, Tzee Luai Tay, Yee Yan Seita, Matteo School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore School of Materials Science and Engineering Nanyang Technological University Singapore School of Biological Sciences Nanyang Technological University Singapore Singapore Nanyang Technological University Singapore Department of Engineering University of Cambridge United Kingdom

The ability for additive manufacturing processes to control solidification at a microscopic scale is of particular interest in the development of components with topology optimised microstructures. Leveraging laser powder bed fusion (LPBF), we present a new methodology to develop site-specific "microstructure architectures" consisting of dissimilar phases. By controlling the laser focal offset, we tailor the melt pool shape and control the amount of material which undergoes re-heating during each melting event. Using a high-carbon steel as a case study, we demonstrate control over the formation of tempered and un-tempered phases at the resolution of the laser spot size (~102µm) and in 3-D throughout the build. This control enables the possibility to tune the mechanical properties, such as hardness, site-specifically and by up to 2.4 GPa;opening the path to produce alloys with novel microstructure and property complexity. © 2023, The Authors. All rights reserved.

关键词： Microstructure

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Morphology Evolution of Β-Phase in Al-Mg-Si Alloys During Aging Treatment

SSRN

引用

SSRN 2023年

作者： Ahmed, Abrar Uttarasak, Kanokwan Tsuchiya, Taiki Lee, Shouwon Nishimura, Katsuhiko Nunomura, Norio Shimizu, Kazuyuki Hirayama, Kyosuke Toda, Hiroyuki Yamaguchi, Masatake Tsuru, Tomohito Watanabe, Shoma Matsuda, Kenji Ikeno, Susumu Graduate School of Science and Engineering for Education University of Toyama Toyama930-8555 Japan Graduate School of Science and Engineering for Research University of Toyama Toyama930-8555 Japan Faculty of Science and Engineering Department of Materials Science and Engineering Kyoto University Kyoto606-8501 Japan Department of Mechanical Engineering Kyushu University Fukuoka819-0395 Japan Center for Computational Science and e-Systems Japan Atomic Energy Agency Ibaraki Tokai319-1195 Japan Nuclear Science and Engineering Center Japan Atomic Energy Agency Ibaraki Tokai319-1195 Japan

This study aims to clarify the growth process of the β-phase in Al-Mg-Si alloys from the point of view of morphology evolution. For this research, the β-phase orientation relationship, shape, growth process, misfit value, and interfacial condition between the β-phase and Al matrix were investigated using high-resolution transmission electron microscopy (HR-TEM), focus ion beam (FIB), and optical microscope (OM). Results include the identification of {111}β facets at the edges of the β-phase, as well as the proposal of two new three-dimensional shapes for the β-phase. We purposed the morphology evolution during the growth process of Mg2Si crystal and calculated the misfit to understand the unstable (111)β facet has a higher misfit value as compared to the (001)β and (011)β facets. Our observations provide how they influence the behavior of Mg2Si crystals, which is crucial for predicting the microstructural evolution of the Al-Mg-Si alloys and for designing materials with desired properties. © 2023, The Authors. All rights reserved.

关键词： High resolution transmission electron microscopy

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Phase stability and mechanical properties of wire+arc additively manufactured H13 tool steel at elevated temperatures

引用

Journal of materials science & Technology 2021年第8期67卷 80-94页

作者： A.N.M.Tanvir Md.R.U.A hsan Gijeong Seo Brian Bates Chanho Lee Peter K.Liaw Mark Noakese Andrzej Nycz Changwook Ji Duck Bong Kim Department of Mechanical Engineering Tennessee Technological UniversityCookevilleTN 38505USA Department of Manufacturing and Engineering Technology Tennessee Technological UniversityCookevilleTN 38505USA Center for Manufacturing Research Tennessee Technological UniversityCookevilleTN 38505USA Department of Materials Science and Engineering University of TennesseeKnoxvilleTN 37996USA Manufacturing Demonstration Facility Oak Ridge National LaboratoryOak RidgeTN 37830USA Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413Republic of Korea

Wire+arc additive manufacturing(WAAM)is considered an innovative technology that can change the manufacturing landscape in the near *** offers the benefits of inexpensive initial system setup and a high deposition rate for fabricating medium-and large-sized parts such as die-casting *** this study,AISI H13 tool steel,a popular die-casting tool metal,is manufactured by cold metal transfer(CMT)-based WAAM and is then comprehensively analyzed for its microstructural and mechanical ***-dependent phase combinations are observed,which could be explained by nonequilibrium thermal cycles that resulted from the layer-by-layer stacking mechanism used in *** addition,remelting and reheating of the layers reduces welding anomalies(e.g.,pores and voids).The metallurgical characteristics of the H13 strongly correlate with the mechanical *** combinations of phases at different locations of the additively manufactured part exhibit a periodic microhardness ***,Retained Austenite,Ferrite,and Carbide phases are found in combination at different locations of the part based on the part’s temperature distribution during additive ***,the tensile properties at elevated temperatures(23℃,300℃,and 600℃)are comparable to those from other WAAM and additive manufacturing(AM)*** X-ray diffraction results verify that the microstructural stability of the fabricated parts at high temperatures would allow them to be used in high temperatures.

关键词： Tool steel Martensitic steel Wire+arc additive manufacturing(WAAM) High temperature tensile test High temperature XRD

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Additive Manufacturing of Al18co30cr10fe10ni32 High Entropy Alloy by Gas Atomization and Laser Powder Bed Fusion

SSRN

引用

SSRN 2023年

作者： Mehta, Abhishek Huynh, Thinh Kljestan, Nemanja Graydon, Kevin Mahmud, Asif Knezevic, Marko McWilliams, Brandon Cho, Kyu Sohn, Yongho Department of Materials Science and Engineering University of Central Florida OrlandoFL32816 United States Department of Mechanical Engineering University of New Hampshire DurhamNH03824 United States Weapons and Materials Research Directorate DEVCOM Army Research Laboratory Aberdeen Proving GroundMD21005 United States

Dense and crack-free, novel, eutectic Al18Co30Cr10Fe10Ni32 high entropy alloy was additively fabricated by the laser powder bed fusion (LPBF) using gas atomized alloy powders. LPBF parametric optimization was performed as a function of laser power (200 – 350 W) and scan speed (300 – 1800 mm/s). Microstructure of the densest sample exhibited a unique trimodal microstructure, along the build direction, consisting of fine cellular, coarse cellular, and conventional lamellar eutectic structures of face centered cubic (FCC) and body centered cubic (BCC) phases. This microstructural variation was significantly different from the starting powder microstructure, and the melt-pool microstructure observed during single laser scanning of arc-melted bulk alloy. The as-built alloy exhibited the outstanding tensile properties of yield strength, σY = 1.06 GPa, tensile strength, σUTS = 1.37 GPa, and elongation at failure, El = 21.3%. © 2023, The Authors. All rights reserved.

关键词： High-entropy alloys

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Adhesive-less bonding of incompatible thermosetting materials

RSC Applied Polymers

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RSC Applied Polymers 2024年第1期3卷 247-256页

作者： Khairkkar, Shhyam Pansare, Amol V. Pansare, Shubham V. Chhatre, Shraddha Y. Sakamoto, Junji Barbezat, Michel Terrasi, Giovanni P. Patil, Vishwanath R. Nagarkar, Amit A. Naito, Masanobu Data-Driven Polymer Design Group Research and Services Division of Materials Data and Integrated System (MaDIS) National Institute for Materials Science (NIMS) 1-2-1 Sengen Ibaraki Tsukuba 305-0047 Japan Composites Group Mechanical Systems Engineering Swiss Federal Laboratories for Materials Science and Technology-Empa ETH Domain Dübendorf 8600 Switzerland Department of Chemistry University of Mumbai Santacruz (E) Mumbai 400098 India National Chemical Laboratory (NCL) Dr Homi Bhabha Road Pune 411008 India Advanced Material Technology Center Technology Division Panasonic Holdings Corporation 1006 Kadoma Kadoma City Osaka 571-8508 Japan Datacule Inc. 529 Main St. Boston 02129 MA United States

We show that dynamic covalent exchange at the interface of two thermosetting polymers results in strong bonding between the materials via creation of a new material at the interface. Thus, polymers of significantly different polarities can be bonded without the use of adhesives. We also show that such dynamic covalent exchange is not only limited to the interface but also penetrates into the bulk material (ca. 20 microns), thereby creating a strong bond. The creation of a new material at the interface was confirmed by Energy Dispersive X-ray (EDX) elemental mapping as well as a new glass transition temperature at the interface. Using this phenomenon, we show that hydrophobic, compliant polymers can also be used as adhesives for polar, stiff materials. We also show that such dynamic exchange also takes place in the presence of fillers like nano-silica. Lastly, using this technique, we demonstrate the adhesive-less fabrication of layered materials where each layer has vastly different polarities and mechanical properties, thereby tuning the failures modes of the resulting composite material. © 2025 RSC.

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