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1958, 80, graphite oxide suspension aqueous graphene oxide dispersion with Ruoff group Characterization of graphene oxide TGA FT-IR XPS Thermogravimetric analysis (TGA) reveals pyrolysis of oxygen-containing functional groups Fourier transform-infrared (FT-IR) and X- ray photoelectron spectroscopy (XPS) identify functional groups with Ruoff group Surface functionalization Thermal reduction can tune C/O ratio in the 2-10 range Nanosheets can be coated with surfactants to maximize interaction between nanofiller and polymer Isocyanates and amines can react to cover the basal plane and sheet edge with nearly limitless number of functional groups CO 2 TEM image of phenyl isocyanatefunctionalized graphene Stankovich, S.; Piner, R. 2010, 22, with Ruoff group Surface functionalization Thermal reduction can tune C/O ratio in the 2-10 range Nanosheets can be coated with surfactants to maximize interaction between nanofiller and polymer Isocyanates and amines can react to cover the basal plane and sheet edge with nearly limitless number of functional groups TEM image of phenyl isocyanatefunctionalized graphene Stankovich, S.; Piner, R. S., Carbon 2006, 44, Anode assembly graphene oxide dispersion graphene oxide paper reduction Graphenepolymer paper vacuum filtration hydrazine Add polymer vacuum filtration Abouimrane, A.; Compton, O. Visco, Eugene Nimon, Bruce Katz, May-Ying Chu, and Lutgard De Jonghe Poly Plus Battery Company 2431 More information Addressing the Impact of Temperature Extremes on Large Format Li-Ion Batteries for Vehicle Applications Ahmad Pesaran, Ph. Shriram Santhanagopalan, Gi-Heon Kim National Renewable Energy Laboratory Golden, More information BATTERY CHEMISTRY RESEARCH IN KOKKOLA Jorma Uusitalo PROFESSOR ULLA LASSI BATTERY CHEMISTRY RESEARCH IN KOKKOLA Research group Juho Välikangas, M. Starke, Ph D Oak Ridge National Laboratory Power and Energy Systems Energy & Transportation Science Division Non Aqueous Organic Radical Redox Flow Batteries Develop Na-ion conducting More information Graphene a material for the future by Olav Thorsen What is graphene? Simply put, it is a thin layer of pure carbon What is graphene? Franky So External Collaborators: John Reynolds, Georgia Tech Industry Partner: Sestar Technologies, LLC Students: Cephas Small More information org/nanolett Hybridizing Energy Conversion and Storage in a Mechanical-to Electrochemical Process for Self-Charging Power Cell Xinyu Xue,, Sihong Wang,, Wenxi Guo, Yan Zhang, and Zhong Lin Wang*,, More information Adhesive Bonding of Natural Stone Section I: Basics of Stone Adhesion Adhesive Theory There are many theories concerning the forces that are at work in forming an adhesive bond between two (2) different More information REDOX REACTION EQUATIONS AND APPLICATIONS Overview of Redox Reactions: o Change in Oxidation State: Loses Electrons = Oxidized (Oxidation number increases) Gains Electrons = Reduced (Oxidation Number Reduced) More information 5s Solubility & Conductivity OBJECTIVES To explore the relationship between the structures of common household substances and the kinds of solvents in which they dissolve. Shenoy, * Division of Engineering, More information Kasetsart J. Sci.) 42 : 357-361 (28) Phase Characterization of Ti O 2 Powder by XRD and TEM Kheamrutai Thamaphat 1 *, Pichet Limsuwan 1 and Boonlaer Ngotawornchai 2 ABSTRACT In this study, the commercial More information Development of Materials for Mobile-use Lithium-ion Batteries and Fuel Cells 40 Development of Materials for Mobile-use Lithium-ion Batteries and Fuel Cells Yasushi Muranaka, Dr. Atsushi Ueda Tatsuya More information 1 of 5 8/21/2006 PM Lithium Iron Phosphate High Current Rechargeable Lithium Ion Batteries Lithium Iron phosphate batteries are safer than Lithium-ion cells, and are available in 10 and 20 AH packs More information Electrochemistry Chapter 21a Electrochemistry: The Electrolytic Cell Electrochemical reactions are oxidation-reduction reactions.
Flow direction VASA in the presence of polymer additives Composite solution loaded into vacuum filtration reservoir Vacuum applied to initiate flow over a membrane Filtered solution can be aqueous or organic solvent Process is amenable to hydrophilic and hydrophobic polymers Fabrication speed peaks near 0.1 min layer -1 with Brinson group Tuning interlayer gallery 100 wt% graphene oxide 0 wt% PVA 51 wt% graphene oxide 49 wt% PVA spacing = 8.7 Å spacing = 16.4 Å Putz, K.
2010, 20, Mechanical enhancement graphene oxide/pva graphene oxide/pmma PVA-based composites improve stiffness by 1000% in comparison to pure polymer, well above the rule of mixtures (ROM) Stiffness of PMMA-based composites is in line with the ROM, while tensile strength increases over 1100% above the pristine polymer Putz, K.
2010, 22, with Ruoff group Outline Synthesis and functionalization of graphene oxide and graphene Nanocomposites with graphene oxide and graphene Vacuum-assisted self-assembly (VASA) fabrication of graphene oxide paper and nanocomposites aqueous graphene oxide dispersion Graphene-based structures for energy storage and electronic applications Graphene oxide paper VASA-prepared graphene oxide/pva thin film Hot-pressed graphene/ps thin film Fabricating thin film of nanocomposites hydrazine 90 C precipitate Me OH Isocyanate-treated graphene oxide in DMF with PS Graphene in DMF with PS Graphene PS nanocomposite powder Powder is amenable to melt-processing SEM image of graphene dispersed in PS matrix Graphene PS thin film PS thin film PS/Graphene Composite (1 wt%) The reduced sheets have a crumpled morphology Even at 1 wt% loading the polymer matrix appears to be completely filled with sheets Stankovich, S. Nature 2006, 442, Enhanced conductivity, mechanical, and thermal properties in PS-graphene nanocomposites Graphene transforms insulating polystyrene matrix into electrically conductive composite Percolation threshold of only 0.1 vol% due to excellent dispersion of functionalized graphene in PS matrix Mechanical and thermal properties of parent matrix enhanced by addition of 1 wt% graphene CNTs afford similar improvement, but can cost $250 per gram Stankovich, S.
2008, 3, Outline Synthesis and functionalization of graphene oxide and graphene Nanocomposites with graphene oxide and graphene Vacuum-assisted self-assembly (VASA) fabrication of graphene oxide paper and nanocomposites aqueous graphene oxide dispersion Graphene-based structures for energy storage and electronic applications Graphene oxide paper VASA-prepared graphene oxide/pva thin film Hot-pressed graphene/ps thin film Graphene oxide paper via vacuum-assisted selfassembly (VASA) Intensity Graphene oxide sheets Filtration Graphene oxide paper Vacuum Membrane filter Stankovich, S. Nature 2006, 448, q (deg) with Ruoff group Lateral crosslinking of graphene oxide sheet by MCl 2 Park et al., ACS Nano 2008, 2(3), Tightly bound, still remain after rinsing Weakly bound, can be rinsed away Edge-linked M-carboxylate works agains tensile force to enhance mechanical properties with Ruoff group Covalent cross-linking with borate Hydrogen bonding is weak link in cross-linking network Annealing drives condensation reactions between borate and surface-bound hydroxyls Covalent linkage increases mechanical stiffness up to 120 GPa Practical tests demonstrate films can accommodate ~50 MPa of strain An, Z.; Compton, O.
2010, 20, Relating structure and property Composition of interlayer gallery affects mechanical properties graphene oxide film prepared from water Hydrogen bonding readily occurs between nanosheet and polymer within interlayer gallery Carbon backbone introduces covalent aspect to cross-linking network Resulting hybrid network of covalent and hydrogen bonds stiffens the composite thin film graphene oxide/pva composite film prepared from water Putz, K. This journal is The Royal Society of Chemistry 2015 Effect of Oxidation Approach on Carbon Nanotube Surface Functional Groups More information OPTIMIZING OF THERMAL EVAPORATION PROCESS COMPARED TO MAGNETRON SPUTTERING FOR FABRICATION OF TITANIA QUANTUM DOTS Vojtěch SVATOŠ 1, Jana DRBOHLAVOVÁ 1, Marian MÁRIK 1, Jan PEKÁREK 1, Jana CHOMOCKÁ 1, More information HYDROGEN STORAGE AND MICROSTRUCTURE INVESTIGATIONS OF La 0.7- x Pr x ALLOYS G.
Volta joined several cells together More information Solid State Ionics 164 (2003) 81 86 Effect of modified Si O 2 on the properties of PEO-based polymer electrolytes Lizhen Fan a,b, Ce-Wen Nan a,b, *, Shujin Zhao c a State Key More information Nanofillers for lubricants in mechanical applications: improved performances in real systems and technological impact Eng. Which would be the best definition of an ionic bond? The attraction between the partial positive region of one molecule and the partial negative region More information Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. The adhesion should exist at the whole More information RECYCLING AND UPCYCLING SPENT LITHIUMION BATTERIES The Growing Lithium ion Battery Market Creates Parallel Disposal Problem Advances in the commercial development of lithium ion batteries have spawned More information Controllable assembly of graphene hybrid materials and their application in energy storage and conversion Dissertation zur Erlangung des Grades Doktor der Naturwissenschaften im Fachbereich Chemie, Pharmazie, More information Physical Properties and Functionalization of Low-Dimensional Materials Physics Department, University of Trieste Graduate School of Physics, XXVI cycle Supervisor: Co-supervisor: Prof.E, Northwestern University UT Austin) Mohammad Naraghi, Tobin Filleter, and Horacio Espinosa (Mech. E, Northwestern University) Stephen Cranford and Markus Buehler (Civil and Environmental Engineering, MIT) Ali Abouimrane and Khalil Amine (Battery Group, Argonne National Laboratory) Karl Putz and L. E, Northwestern University) Outline Synthesis and functionalization of graphene oxide and graphene Nanocomposites with graphene oxide and graphene Vacuum-assisted self-assembly (VASA) fabrication of graphene oxide paper and nanocomposites aqueous graphene oxide dispersion Graphene-based structures for energy storage and electronic applications Graphene oxide paper VASA-prepared graphene oxide/pva thin film Hot-pressed graphene/ps thin film Outline Synthesis and functionalization of graphene oxide and graphene Nanocomposites with graphene oxide and graphene Vacuum-assisted self-assembly (VASA) fabrication of graphene oxide paper and nanocomposites aqueous graphene oxide dispersion Graphene-based structures for energy storage and electronic applications Graphene oxide paper VASA-prepared graphene oxide/pva thin film Hot-pressed graphene/ps thin film Synthesis and characterization of graphene oxide graphite graphite oxide H 2 SO 4 KMn O 4 Bulk quantities attainable only via chemical route Oxygenation expands interlayer gallery Sonication exfoliates structure into individual nm-thick sheets C/O ratio from 1-2 sonication Hummers, W. Supporting information Ultrafast room-temperature NH 3 sensing with positively-gated reduced graphene oxide field-effect transistors Ganhua Lu 1, Kehan Yu 1, Leonidas E. Material remains electrochemically stable over the course of 100 charge/discharge cycles Donghai Wang; Rong Kou; Daiwon Choi; Zhenguo Yang; Zimin Nie; Juan Li; Laxmikant V. Kim, Barbaros O zyilmaz5, Jong-Hyun Ahn, Byung Hee Hong, and Sumio Iijima, Nat. 2010, DOI: /NNANO Conclusions Graphene oxide and graphene are versatile nanomaterials that can be assembled into a wide range of macroscopic structures and objects Chemical modifications can greatly improve the properties of the resulting carbon-based assembled materials Thank you for your attention Questions? Accepted More information Graphene-based Composite Thin Films for Electronics NANO LETTERS 2009 Vol. 2 814-818 Goki Eda and Manish Chhowalla* Rutgers Uni Versity, Materials Science and Engineering, Piscataway, New Jersey More information Burcu Saner, Firuze Okyay, Fatma Dinç, Neylan Görgülü, Selmiye Alkan Gürsel and Yuda Yürüm* Faculty of Engineering and Natural Sciences, Sabancı University, Istanbul Background about graphene and its separation More information Performance of Carbon-PTFE Electrodes and PTFE Separators in Electrochemical Double Layer Capacitors (EDLCs) David Zuckerbrod, Robert Sassa, Marianne Szabo, Meagan Mizenko Abstract: W. Gore & Associates More information High Energy Rechargeable Li-S Cells for EV Application. Paradise More information Li Ion Batteries Steve Harris General Motors R&D UC Berkeley 1 Outline Li battery basics Samples from my research What are the problems? 2 Some Basics AB C A BC G 3 Some Basics More information Graphene-based composites Andrea Liscio Vincenzo CNR Palermo ISOF Bologna, CNR ISOF Italy Bologna, Italy GRAPHENE COMPOSITE WHY? GRAPHENE a class of materials All-surface material Graphene production More information Journal of ELECTRONIC MATERIALS, Vol. 11, 2007 DOI: 10.1007/s11664-007-0270-x Ó 2007 TMS Special Issue Paper -Cu Intermetallic Grain Morphology Related to Layer Thickness MIN-HSIEN LU 1 and KER-CHANG More information MATTER VOLUME 1 ISSUE1 1 HYDROTHERMAL SYNTHESIS AND CHARACTERIZATION OF Li Mn PO 4 CATHODE MATERIALS Bilen Aküzüm 1 1 Department of Metallurgical and Materials Engineering, METU, 06800 Ankara, Turkey ABSTRACT More information I Applications and Benefits of Multi-Walled Carbon Nanotubes (MWCNT) Table of Content 1 Introduction...1 2 Improved Properties...1 3 Potential Applications...1 3.1 Current / short-term applications...3 More information Supporting Information Simple and Rapid Synthesis of Ultrathin Gold Nanowires, Their Self-Assembly and Application in Surface-Enhanced Raman Scattering Huajun Feng, a Yanmei Yang, a Yumeng You, b Gongping More information Planar ZEBRA Battery for Renewable Integration and Grid Applications John P. C 2010, 114, Composite electrodes Lithium ion batteries poses some explosion hazards due to high potential in proximity to flammable organic electrolytes Polymers with high ionic conductivity for Li ions (i.e., PEO) are candidates to replace these electrolytes charge-discharge profiles cell cyclability Abouimrane, A.; Compton, O. Ocola 2, and Junhong Chen 1 * 1 More information Journal of Materials Chemistry C Accepted Manuscript This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication.To this aim, four studies were carried out; two involving the ‘top-down’ synthesis of graphene from graphite and two involving the ‘bottom-up’ synthesis of graphene from molecular precursors.In the first study a series of intermediate materials between graphene oxide (GO) and reduced GO (r GO) were successfully produced using a well-controlled reduction reaction, and the trend in their properties was explored, while in the second study r GO was successfully produced using a novel method that is simple, scalable and environmentally friendly.The team at Graphene Box offers all the technical documentation for our products in our online store.Furthermore, in this section we provide all download links for our MSDS, RAMAN spectroscopy photographs, use and handling specifications, manuals, ...