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Revealing Electronic Signature of Lattice Oxygen Redox in Lithium Ruthenates and Implications for High-Energy Li-Ion Battery Material Designs
Revealing Electronic Signature of Lattice Oxygen Redox in Lithium Ruthenates and Implications for High-Energy Li-ion Battery Material Designs Yang Yua,*, Pinar Karayaylalib, Stanisław H. Nowakc, Livia Giordanob,d, Magali Gauthierd, †, Wesley Honga, Ronghui Koue, Qinghao LiF, John Vinsong, Thomas Krollc, Dimosthenis Sokarasc, *, Cheng-Jun Sune, Nenian Charlesd, Filippo Magliah, Roland Jungh, Yang Shao- Horna,b,d,* a Department of Materials Science and Engineering, MIT, Cambridge, MA 02139, USA b Department of Mechanical Engineering, MIT, Cambridge, MA 02139, USA c SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA d Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA e Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA f Advanced Light Source, Lawrence Berkeley National Laboratory, CA 94720, USA gNational Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA h BMW Group, Petuelring 130, 80788 Munich, Germany †Current address: M.G.: LEEL, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France. Corresponding Authors * Yang Yu ([email protected]) * Dimosthenis Sokaras ([email protected]) * Yang Shao-Horn ([email protected]) 1 ABstract Anion redox in lithium transition metal oxides such as Li2RuO3 and Li2MnO3, has catalyzed intensive research efforts to find transition metal oxides with anion redox that may boost the energy density of lithium-ion batteries. The physical origin of observed anion redox remains debated, and more direct experimental evidence is needed. In this work, we have shown electronic signatures 2- n- of oxygen-oxygen coupling, direct evidence central to lattice oxygen redox (O /(O2) ), in charged 4+ 5+ Li2-xRuO3 after Ru oxidation (Ru /Ru ) upon first-electron removal with lithium de-intercalation. -
Summer 2021 Alumni Class Notes
NotesAlumni Alumni Notes Policy where she met and fell in love with Les Anderson. The war soon touched Terry’s life » Send alumni updates and photographs again. Les was an Army ROTC officer and the directly to Class Correspondents. Pentagon snatched him up and sent him into the infantry battles of Europe. On Les’ return in » Digital photographs should be high- 1946, Terry met him in San Francisco, they resolution jpg images (300 dpi). married and settled down in Eugene, where Les » Each class column is limited to 650 words so finished his degree at the University of Oregon. that we can accommodate eight decades of Terry focused on the care and education of classes in the Bulletin! their lively brood of four, while Les managed a successful family business and served as the » Bulletin staff reserve the right to edit, format Mayor of Eugene. and select all materials for publication. Terry’s children wrote about their vivacious, adventurous mom: “Terry loved to travel. The Class of 1937 first overseas trip she and Les took was to Europe in 1960. On that trip, they bought a VW James Case 3757 Round Top Drive, Honolulu, HI 96822 bug and drove around the continent. Trips over [email protected] | 808.949.8272 the years included England, Scotland, France, Germany, Italy, Greece, Russia, India, Japan, Hong Kong and the South Pacific. Class of 1941 “Trips to Bend, Oregon, were regular family Gregg Butler ’68 outings in the 1960s. They were a ‘skiing (son of Laurabelle Maze ’41 Butler) A fond aloha to Terry Watson ’41 Anderson, who [email protected] | 805.501.2890 family,’ so the 1968 purchase of a pole house in Sunriver allowed the family of six comfortable made it a point to make sure everyone around her A fond aloha to Terry Watson Anderson, who surroundings near Mount Bachelor and a year- was having a “roaring good time.” She passed away passed away peacefully in Portland, Oregon, round second home. -
State of the Art in the Use of Bioceramics to Elaborate 3D
RESEARCH PAPER RESEARCH State of the art in the use of... INTERNATIONAL JOURNAL OF ADVANCES IN MEDICAL BIOTECHNOLOGY State of the art in the use of bioceramics to elaborate 3D structures using robocasting Juliana Kelmy Macário Barboza Daguano1,2*; Claudinei dos Santos3; Manuel Fellipe Rodrigues Pais Alves4; Jorge Vicente Lopes da Silva2; Marina Trevelin Souza5; Maria Helena Figueira Vaz Fernandes6 *Corresponding author: E-mail address:[email protected] Abstract: Robocasting, also known as Direct Ink Writing, is an Additive Manufacturing (AM) technique based on the direct extrusion of colloidal systems consisting of computer-controlled layer-by-layer deposition of a highly concentrated suspension (ceramic paste) through a nozzle into which this suspension is extruded. This paper presents an overview of the contributions and challenges in developing three-dimensional (3D) ceramic biomaterials by this printing method. State-of-art in different bioceramics as Alumina, Zirconia, Calcium Phosphates, Glass/Glass-ceramics, and composites is presented and discussed regarding their applications and biological behavior, in a survey comprising from the production of customized dental prosthesis to biofabricating 3D human tissues. Although robocasting represents a disruption in manufacturing porous structures, such as scaffolds for Tissue Engineering (TE), many drawbacks still remain to overcome and although widely disseminated this technique is far from allowing the obtainment of dense parts. Thus, strategies for manufacturing densified bioceramics are presented aiming at expanding the possibilities of this AM technique. The advantages and disadvantages and also future perspectives of applying robocasting in bioceramic processing are also explored. Keywords: Additive Manufacturing (AM); Direct Ink Writing (DIW); Robocasting; Bioceramics; Challenges; Perspectives. -
Applied Catalysis and Chemical Engineering April 08-10, 2019
ACC - 2019 International Conference on Applied Catalysis and Chemical Engineering April 08-10, 2019 Venue Crowne Plaza by Deira Salahuddin Rd-Dubai United Arab Emirates Publishing Partner DAY 1 MONDAY, April 08, 2019 Keynote Presentation Towards an Industrial Production of Hydrogen Through Catalytic Autothermal POX/Dry Reforming of Methane Jnicolas Abatzoglou *, Frank Dega and Mostafa Chamoumi Université de Sherbrooke, Sherbrooke, Canada Abstract The diversification of energy sources, especially using non-fossil resources, is an efficient way to contribute to the solution of both environmental and socio-political issues. Hydrogen produced from renewable sources, such as biomass, appears as one of the potential future energy and raw material vectors. Currently, H 2 is mainly produced through natural gas and biogas catalytic steam reforming. This work belongs to a larger endeavour aimed at developing a new family of spinel-based catalysts. More specifically, this study targets the optimization of hydrogen production through a POX/Dry reforming of methane, operated close to the autothermal regime. The used patent-pending catalyst is a spinellized nickel formulation prepared from an ilmenite- derived negative value upgraded slag oxide (UGSO) coming from a TiO2 slag production unit operated by Rio Tinto Iron & Titanium, Quebec, Canada. The initial tests have been done in a tubular fixed bed reactor at 800-850°C, m cat = 0,3g, atmospheric pressure, space velocity between 4000 and 4600 ml STP /h/g cat and molar ratio of CH4 /CO2 = 3. The experiments revealed that CH4 /O2 = 2 molar ratio is the optimum condition, at 850°C. At these conditions, the conversion of CH 4 and CO reached 99% and 65% respectively while the selectivity of H 2 and CO was 104% and 79% respectively. -
Micro-Fabrication of Ceramics: Additive Manufacturing and Conventional Technologies
Journal of Advanced Ceramics 2021, 10(1): 1–27 ISSN 2226-4108 https://doi.org/10.1007/s40145-020-0422-5 CN 10-1154/TQ Review Micro-fabrication of ceramics: Additive manufacturing and conventional technologies Hany HASSANINa,*, Khamis ESSAb, Amr ELSHAERc, Mohamed IMBABYd,e, Heba H. EL-MONGYd,f, Tamer A. EL-SAYEDd,f aSchool of Engineering, Canterbury Christ Church University, Canterbury, CT1 1QU, UK bUniversity of Birmingham, Edgbaston, B15 2TT, UK cKingston University London, Penrhyn Road, Kingston Upon Thames, Surrey, KT1 2EE, UK dDepartment of Mechanical Design, Faculty of Engineering, Mataria, Helwan University, P. O. Box. 11718, Cairo, Egypt eJubail University College, Mechanical Engineering, Kingdom of Saudi Arabia fCenter for Applied Dynamics Research (CADR), School of Engineering, University of Aberdeen, Aberdeen, AB24 3UE, UK Received: June 7, 2020; Revised: August 31, 2020; Accepted: September 9, 2020 © The Author(s) 2020. Abstract: Ceramic materials are increasingly used in micro-electro-mechanical systems (MEMS) as they offer many advantages such as high-temperature resistance, high wear resistance, low density, and favourable mechanical and chemical properties at elevated temperature. However, with the emerging of additive manufacturing, the use of ceramics for functional and structural MEMS raises new opportunities and challenges. This paper provides an extensive review of the manufacturing processes used for ceramic-based MEMS, including additive and conventional manufacturing technologies. The review covers the micro-fabrication techniques of ceramics with the focus on their operating principles, main features, and processed materials. Challenges that need to be addressed in applying additive technologies in MEMS include ceramic printing on wafers, post-processing at the micro-level, resolution, and quality control. -
Bayerisches Geoinstitut Jahresbericht 2010
A N N U A L R E P O R T 2010 and list of publications Bayerisches Forschungsinstitut für Experimentelle Geochemie und Geophysik Universität Bayreuth Bayerisches Geoinstitut Universität Bayreuth D-95440 Bayreuth Germany Telephone: +49-(0)921-55-3700 Telefax: +49-(0)921-55-3769 e-mail: [email protected] www: http://www.bgi.uni-bayreuth.de Editorial compilation by: Stefan Keyssner and Petra Buchert Section editors: Andreas Audétat, Tiziana Boffa Ballaran, Leonid Dubrovinsky, Dan Frost, Florian Heidelbach, Tomoo Katsura, Hans Keppler, Falko Langenhorst, Catherine McCammon, Nobuyoshi Miyajima, Dave Rubie, Henri Samuel, Gerd Steinle-Neumann, Nicolas Walte Staff and guests of the Bayerisches Geoinstitut in July 2010: Die Mitarbeiter und Gäste des Bayerischen Geoinstituts im Juli 2010: First row, from left (1. Reihe, v. links) Stefan Keyssner, Davide Novella, Hongzhan Fei, Richard McCormack, Qingguo Wei, Vojtech Vlcek, Mezhoura Oussadou, Ruifang Huang, Li Zhang, Federica Schiavi Second row, from left (2. Reihe, v. links) Florian Heidelbach, Sushant Shekhar, Coralie Weigel, Gleb Parakhonskiy, Lu Feng, Martha Pamato, Azzurra Zucchini, Mattia Giannini, Antje-Kathrin Vogel, Catherine McCammon, Vincenzo Stagno Third row, from left (3. Reihe, v. links) Henri Samuel, Alexander Kurnosov, Kilian Pollok, Sven Linhardt, Ryosuke Sinmyo, Yuan Li, Geeth Manthilake, Nobuyoshi Miyajima, Yoichi Nakajima, Heinz Fischer, Holger Kriegl Fourth row, from left (4. Reihe, v. links) Petra Buchert, Juliane Hopf, Nico de Koker, Mainak Mookherjee, Huaiwei Ni, Alberto Escudero, Diego Bernini, Xiaozhi Yang, Tomoo Katsura, Julien Chantel, Linda Lerchbaumer, Anna Spivak Fifth row, from left (5. Reihe, v. links) Dmytro Trots, Hans Keppler, Gerd Steinle-Neumann, Razvan Caracas, Patrick Cordier, Vladislav Aleksandrov, David Dolejš, Eran Greenberg, Hubert Schulze, Dan Frost Sixth row, from left (6. -
Fall 2005 GRADUATE QUARTERLY 1 FALL 2005 Message from the Dean
Volume 15 Number 1 Fall 2005 GRADUATE QUARTERLY 1 FALL 2005 Message from the Dean Dear Graduate Student, Too often, we see graduate education as a time of preparation for some- thing else—for careers in academia and industry, for professional practice, for roles in cutting edge research. Preparation, in brief, for the real world or our real lives—which we will resume only when our degrees are awarded and job placement has been secured. But if you think more deeply about the context in which you will conduct your graduate studies, you will see that the doing begins now. As graduate scholars, you will enrich the academic community with your insights, your perspectives, your experience. Faculty will be challenged by your questions and perspectives. Undergraduate students will find in you able teachers of fundamental concepts, caring mentors for laboratory work, and role models showing them a possible future for themselves. Similarly, the symbol of the ivory tower suggests that you are about to enter a rarefied atmosphere, rising above pedestrian concerns and dealing with substances uncommon in everyday life. But in today’s world, the ivory tower has many bridges and walkways to other key institutions in our soci- Phillip Channing ety: to government, to business, to culture. While the university provides a relatively sheltered and safe arena in which to examine ideas and events from a variety of critical perspectives, what we do here has an impact on people and events far beyond the campus boundary. There has always been a tension between engagement and sanctuary as features of the academic life. -
C12) United States Patent (10) Patent No.: US 7,306,828 B2 Barrera Et Al
111111 1111111111111111111111111111111111111111111111111111111111111 US007306828B2 c12) United States Patent (10) Patent No.: US 7,306,828 B2 Barrera et al. (45) Date of Patent: Dec. 11, 2007 (54) FABRICATION OF REINFORCED 6,976,532 B2 * 12/2005 Zhan eta!. ................. 165/185 COMPOSITE MATERIAL COMPRISING 2004/0150140 A1 8/2004 Zhan et a!. CARBON NANOTUBES, FULLERENES, AND 2004/0265489 A1 * 12/2004 Dubin ........................ 427/212 VAPOR-GROWN CARBON FIBERS FOR 2005/0181209 A1 * 8/2005 Karandikar ................. 428/408 THERMAL BARRIER MATERIALS, OTHER PUBLICATIONS STRUCTURAL CERAMICS, AND MULTIFUNCTIONAL NANOCOMPOSITE Nakano et al., "Fabrication and Characterization of Three-Dimen CERAMICS sional Carbon Fiber Reinforced Silicon Carbide and Silicon Nitride Composites," J. Am. Ceram. Soc., 78(10), 2811-2814 (1995). (75) Inventors: Enrique V. Barrera, Houston, TX Guo et a!., "Carbon fibre-reinforced silicon nitride composite," J. (US); Leonard Lee Yowell, Jr., Mater. Sci. 17, 3611-3616 (1982). Grenet eta!., "Carbon Fibre-Reinforced Silicon Nitride Composites Houston, TX (US); Brian Mitchell by slurry Infilitration," Ceramic Transactions, 58, 125-130 (1995). Mayeaux, Houston, TX (US); Erica L. Iijima, "Helical microtubules of graphitic carbon," Nature, 354, Corral, Houston, TX (US); Joseph 56-58 (1991). Cesarano, III, Albuquerque, NM (US) Thostenson et a!., "Advances in the science and technology of carbon nanotubes and their composites: a review," Composites (73) Assignee: William Marsh Rice University, Science and Technology, 61, 1899-1912 (2001). Houston, TX (US) Yakobson et a!., "Nanomechanics of carbon tubes: instabilities beyond linear response," Physical Review Letters, 76(14), 2511- ( *) Notice: Subject to any disclaimer, the term of this 2514 ( 1996). patent is extended or adjusted under 35 Walters et a!., "Elastic Strain of Freely Suspended Single Walled U.S.C. -
Graphene Oxide: an All-In-One Processing Additive for 3D Printing
Graphene oxide: an all-in-one processing additive for 3D printing Esther García-Tuñóna,b,*, Ezra Feildena, Han Zhenga, Eleonora D’Eliaa, Alan Leonga and Eduardo Saiza aCentre for Advanced Structural Ceramics, Department of Materials, Imperial College London, Royal School of Mines, Prince Consort Road, South Kensington, SW7 2BP, London, UK bMaterials Innovation Factory & School of Engineering, Harrison Hughes Building, Brownlow Hill, L69 3GH, University of Liverpool, Liverpool, UK *[email protected] ORCID Esther García-Tuñón: 0000-0001-9507-4501 Keywords: 2D colloids, processing, 3D printing, complex fluids, and oscillatory rheology Abstract Many 3D printing technologies are based on the development of inks and pastes to build objects through droplet or filament deposition (the latter also known as continuous extrusion, robocasting or direct ink writing). Controlling and tuning rheological behaviour is key for successful manufacturing using these techniques. Different formulations have been proposed but the search continues for approaches that are clean, flexible and robust and can be adapted to a wide range of materials. Here we show how graphene oxide (GO) enables the formulation of water-based pastes to print a wide variety of materials (polymers, ceramics and steel) using robocasting. This work combines flow and oscillatory rheology, to provide further insights into the rheological behaviour of suspensions combining GO with other materials. Graphene oxide can be used to manipulate the viscoelastic response enabling the formulation of pastes with excellent printing behaviour that combine shear thinning flow and a fast recovery of their elastic properties. These inks do not contain other additives just GO and the material of interest. -
Extrusion-Based 3D Printing of Ceramic Components M
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Available online at www.sciencedirect.com ScienceDirect Procedia CIRP 28 ( 2015 ) 76 – 81 3rd CIRP Global Web Conference Extrusion-based 3D printing of ceramic components M. Faesa,*, H. Valkenaersa, F. Vogelera, J. Vleugelsb, E. Ferrarisa aKU Leuven, Dept. of Mechanical Engineering, J. De Nayerlaan, B-2860 St.-Katelijne-Waver, Belgium bKU Leuven, Dept. of Metallurgy and Materials Engineering (MTM), Kasteelpark Arenberg 44 bus 2450, B-3001 Heverlee , Belgium * Corresponding author. Tel.: + 32 (0) 15 31 69 44, E-mail address: [email protected]. Abstract Engineering ceramics are becoming increasingly important in the nowadays-industrial landscape, thanks to the exceptional combination of good mechanical, thermal and chemical properties. Nevertheless, traditional ceramic manufacturing technologies lack the ability to compete in a market of customized complex components. Additive Manufacturing therefore provides an important contribution, given the nearly unlimited design freedom. This research aims at developing an extrusion-based AM technology using UV-curable dispersions. The homogeneity, rheology and printability of these dispersions, containing 22,5%vol to 55%vol ZrO2 in different commercially available resins were investigated. A sintered density of 92% was obtained, proving the potential of the technology in development. © 2014 Published by Elsevier B.V This is an open access article under the CC BY-NC-ND license (©http://creativecommons.org/licenses/by-nc-nd/4.0/ 2014 The Authors. Published by Elsevier B.V.). Selection and peer-review under responsibility of the International Scientific SelectionCommittee and of peer the-review 3rd CIRP under Global responsibility Web Conference of the International in the person Scientifi of c Committeethe Conference of the Chair“3rd CIRP Dr. -
Final Announcement Code Number
SUMMARY Invitation to attend 13th International Ceramics Congress - Flowsheet ..........................................................2nd Cover th rd The 13th senior edition of the 6 Forum on New Materials - Flowsheet ........................................................................ 3 Cover International Conferences Summary ..................................................................................................................................1 on Modern Materials and SCIENTIFIC PROGRAMME Technologies (CIMTEC 2014) to be held in 13th INTERNATIONAL CERAMICS CONGRESS Montecatini Terme, Tuscany, Congress Committees ............................................................................................................................... 2 Italy will consist of the 13th Outline Congress ...................................................................................................................................... 5 International Ceramics Sessions Timetable ................................................................................................................................... 6 Code Number of Contributions by Presenting Author (in alphabetical order) ................................................ 9 Congress (June 8-13) and Symposium CA Ceramic Powders: Advances in Synthesis, Processing and Manufacturing ..................... 15 of the 6th Forum on New Symposium CB Progress in Non Conventional and Novel Manufacturing Routes to Ceramics ................. 18 Materials (June 15-19). Special Session CB-9 -
Alumni Notes
Alumni Notes Alumni Notes Policy families were sent to internment camps. The 442nd Regimental Combat Team suffered » Send alumni updates and photographs more than 800 combat casualties, according to directly to Class Correspondents. the Department of Defense. For his role in » Digital photographs should be liberating France, Eddie received the Legion high-resolution jpg images (300 dpi). of Honor, that country’s highest decoration. A service was held in Japan with family and » Each class column is limited to 650 friends. Yamasaki requested to be interred at words so that we can accommodate the National Memorial Cemetery of the Pacific eight decades of classes in the Bulletin! at Punchbowl and a Honolulu service is pending at the writing of these Notes. » Bulletin staff reserve the right to edit, format and select all materials Take care of yourselves and please forward for publication. any news you would like me to share with your classmates. th REUNION Class of 1943 75 JUNE 4 – 10, 2018 Irwin “Win” Rosa 1015 Aoloa Pl. #256, Kailua, HI 96734 [email protected] | 808.262.4390 Class of 1934 Wai Chee Chun ’34Yee celebrated her 100th Front: Wai Chee Chun ’34 Yee. Back row, from left: Class of 1944 birthday with an open house at her Manoa daughter Libby Yee ’68 Murray, grandchildren Kevin Mary Day Wilson home. Many friends and family attended, some Hughes, Sam Murray, Karna Hughes (Kevin and 5746 Hauiki Rd., Kapa‘a, HI 96746 who were former colleagues from her days as Karna are children of the late Mimi Yee ’62 Hughes). [email protected]|808.822.3863 |808.651.2204 (c) catalog librarian at Hamilton Library UH Manoa, members of her church, and others in The Class of 1944 celebrated their 73rd the community including Meals on Wheels 93rd birthday just 10 days prior to her death.