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Guidelines for Synthesis and Processing of Two-Dimensional
Methods/Protocols pubs.acs.org/cm Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2Tx MXene) Mohamed Alhabeb, Kathleen Maleski, Babak Anasori, Pavel Lelyukh, Leah Clark, Saleesha Sin, and Yury Gogotsi* A.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States *S Supporting Information ABSTRACT: Two-dimensional (2D) transition metal carbides, carbonitrides, and nitrides (MXenes) were discovered in 2011. Since the original discovery, more than 20 different compositions have been synthesized by the selective etching of MAX phase and other precursors and many more theoretically predicted. They offer a variety of different properties, making the family promising candidates in a wide range of applications, such as energy storage, electromagnetic interference shielding, water purification, electrocatalysis, and medicine. These solution-processable materials have the potential to be highly scalable, deposited by spin, spray, or dip coating, painted or printed, or fabricated in a variety of ways. Due to this promise, the amount of research on MXenes has been increasing, and methods of synthesis and processing are expanding quickly. The fast evolution of the material can also be noticed in the wide range of synthesis and processing protocols that determine the yield of delamination, as well as the quality of the 2D flakes produced. Here we describe the experimental methods and best practices we use to synthesize the ff ff most studied MXene, titanium carbide (Ti3C2Tx), using di erent etchants and delamination methods. We also explain e ects of synthesis parameters on the size and quality of Ti3C2Tx and suggest the optimal processes for the desired application. -
Yury Gogotsi As Supercapacitor Electrodes
Lecture Abstract Schedule This lecture will provide an overview of research activities 3:30—4:00 PM, CP-137 in the area of nanostructured carbon and carbide Reception for Dr. Gogotsi materials used for capacitive storage of electrical energy. Enjoy refreshments and informal conversation The Seventeenth Annual Electrochemical capacitors or “supercapacitors” are with our speaker. devices that store electrical energy electrostatically and Lyle Ramsay Dawson Lecture are used in applications where batteries cannot provide Established in the memory of Lyle Ramsay Dawson sufficient power or charge/discharge rates, or when 4:00 PM, CP-139 a long service life (up to 1 million cycles) is needed. Introduction of our speaker by Distinguished Professor and former Head of the Professor John P. Selegue. Until now, their higher cost, compared to batteries, has Department of Chemistry been limiting the use of supercapacitors in household, automotive and other cost-sensitive applications. We 4:00—5:00 PM, CP-139 describe the materials aspects of supercapacitor Zero- to Three-Dimensional Carbon-Based development, address unresolved issues and outline future Materials for Energy Storage Zero- to Three- research directions. Dimensional Carbon- High surface area carbon materials are widely used Yury Gogotsi as supercapacitor electrodes. Graphene, nanotubes, Professor of Materials Science and Engineering, Based Materials for activated carbons, template carbons, carbon onions and Drexel University, Philadelphia Energy Storage carbon black are among many materials being used Director, A.J. Drexel Nanotechnology Institute in supercapacitors. Extraction of metals from carbides can generate a broad range of potentially important The Department of Chemistry wishes to acknowledge the carbon nanostructures, which range from porous carbon generous support of the Lyle Ramsay Dawson Lecture Series Yury Gogotsi networks to onions and nanotubes. -
Capacitance-Power-Hysteresis Trilemma in Nanoporous
The Capacitance-Power-Hysteresis Trilemma in Nanoporous Supercapacitors Alpha A Lee,1, 2 Dominic Vella,2 Alain Goriely,2 and Svyatoslav Kondrat3, 4 1School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA 2Mathematical Institute, Andrew Wiles Building, University of Oxford, Woodstock Road, Oxford OX2 6GG, United Kingdom 3IBG-1: Biotechnology, Forschungszentrum J¨ulich, 52425 J¨ulich, Germany 4Department of Chemistry, Faculty of Natural Sciences, Imperial College London, SW7 2AZ, UK Nanoporous supercapacitors are an important player in the field of energy storage that fill the gap between dielectric capacitors and batteries. The key challenge in the development of supercapacitors is the perceived tradeoff between capacitance and power delivery. Current efforts to boost the capacitance of nanoporous superca- pacitors focus on reducing the pore size so that they can only accommodate a single layer of ions. However, this tight packing compromises the charging dynamics and hence power density. We show via an analytical theory and Monte Carlo simulations that charging is sensitively dependent on the affinity of ions to the pores, and that high capacitances can be obtained for ionophobic pores of widths significantly larger than the ion diameter. Our theory also predicts that charging can be hysteretic with a significant energy loss per cycle for intermediate ionophilicities. We use these ob- servations to explore the parameter regimes in which a capacitance-power-hysteresis trilemma may be avoided. arXiv:1510.05595v2 [cond-mat.mtrl-sci] 15 Jun 2016 I. INTRODUCTION The physics of charge storage at the nanoscale has received significant attention in re- cent years due to its relevance for efficient energy storage and the development of novel green technologies [1–3]. -
AFM-CDC-Review-2011.Pdf
Vol. 21 • No. 5 • March 8 • 2011 www.afm-journal.de AADFM21-5-COVER.inddDFM21-5-COVER.indd 1 22/11/11/11/11 66:50:31:50:31 PPMM www.afm-journal.de www.MaterialsViews.com Carbide-Derived Carbons – From Porous Networks to Nanotubes and Graphene Volker Presser , Min Heon , and Yury Gogotsi * FEATURE ARTICLE FEATURE from carbides has attracted special atten- Carbide-derived carbons (CDCs) are a large family of carbon materials derived tion lately. [ 3,4 ] Carbide-derived carbons from carbide precursors that are transformed into pure carbon via physical (CDCs) encompass a large group of car- (e.g., thermal decomposition) or chemical (e.g., halogenation) processes. bons ranging from extremely disordered to highly ordered structures ( Figure 1 ). The Structurally, CDC ranges from amorphous carbon to graphite, carbon nano- carbon structure that results from removal tubes or graphene. For halogenated carbides, a high level of control over the of the metal or metalloid atom(s) from the resulting amorphous porous carbon structure is possible by changing the carbide depends on the synthesis method synthesis conditions and carbide precursor. The large number of resulting (halogenation, hydrothermal treatment, carbon structures and their tunability enables a wide range of applications, vacuum decomposition, etc.), applied tem- perature, pressure, and choice of carbide from tribological coatings for ceramics, or selective sorbents, to gas and precursor. electrical energy storage. In particular, the application of CDC in supercapac- The growing interest in this fi eld is itors has recently attracted much attention. This review paper summarizes refl ected by a rapidly increasing number key aspects of CDC synthesis, properties, and applications. -
Australian High Commission Tarawa Quarterly Newsletter
AUSTRALIAN GOVERNMENT Australian High Commission Tarawa Quarterly Newsletter ISSUE: 03 DECEMBER 2010 PARLIAMENTARY SECRETARY VISIT SPECIAL POINTS OF The Australian Parliamentary Sec- his team received a typically INTEREST: retary for Pacific Island Affairs, the enthusiastic welcome from the Hon Richard Marles MP visited students and staff at the Kiribati • PM’s Pacific Kiribati on 30 November 2010. School and Centre for Children Mr Marles meeting the Principal of Australia Award Mr Marles was accompanied by with Special Needs. Among the the KIT, Ms Tess Martin senior advisers and officials from highlights was a rousing rendi- • RAMSI the Department of Foreign Affairs tion of the Australian national RKS Teanoai, Mr Marles discussed • More photos on and Trade and AusAID. anthem and a dance in tradi- bilateral defence cooperation and re- page 5 tional costume performed by gional maritime surveillance issues with the students for their Australian senior Kiribati Police Service and Aus- tralian Defence Force personnel. As part of his visit, Mr Marles an- nounced an additional $50,000 in fund- ing for the School and Centre for Chil- dren with Special Needs and another $45,000 for a new Satellite Internet HE Brett Aldam meeting the Par- INSIDE THIS Centre to promote officer training at liamentary Secretary for Pacific Mr Marles giving his speech at ISSUE: Island Affairs, the Hon Richard the School Marles MP on arrival in Tarawa Parliamentary 1 visitors. For their part, the Secretary visit Mr Marles’ visit reaffirmed the Australian team looked abso- lutely resplendent in the golden- Orthopeadic strength and vitality of relations 2 wattle inspired shirts presented Team between Australia and Kiribati. -
Oral Presentations 0828
SUNDAY, 8 SEPTEMBER Chair: Masayuki Morita (Kyoto University) Plenary Lecture PL-01 13:00 Research on pseudocapacitive materials : getting nowhere fast Thierry Brousse (Université de Nantes, Réseau sur le Stockage Electrochimique de l’énergie (RS2E)) Keynote Lecture KL-01 13:40 First-Principles Calculations of MXene Electrode Materials for Electrochemical Energy Storage Yasuaki OKADA, Kosuke Shiratsuyu (Murata Manufacturing Co., Ltd.) Chairs: Frédéric Favier (Université de Montpellier) Etsuro Iwama (Tokyo University of Agriculture & Technology) Invited Talk 1O-01 14:10 Polycationic oxides for aqueous electrochemical capacitors: example of the Fe/W/O System Olivier Crosnier, Nicolas Goubard-Brétésché, Julio Cesar Espinosa-Angeles, Camille Douard, Frédéric Favier, Thierry Brousse (Université de Nantes, Réseau sur le Stockage de l'Energie (RS2E), Institut Charles Gerhardt Montpellier) 14:30 Coffee Break 1O-02 14:50 Cation-Disordered Li3VO4 : Transformation from Battery to Pseudocapacitive Materials Etsuro Iwama, Keisuke Matsumura, Kenta Takagi, Wako Naoi, Yuki Orikasa, Patrick Rozier, Patrice Simon, Katsuhiko Naoi (Tokyo University of Agriculture & Technology, K & W Inc., Ritsumeikan University, Université de Toulouse, Réseau sur le Stockage Electrochimique de l’Energie) 1O-03 15:10 Pseudo Capacitive Reaction of Several Metal Oxide Positive Electrodes with Al Metal Negative Electrode Masanobu Chiku, Tian Yihan, Eiji Higuchi, Hiroshi Inoue (Osaka Prefecture University) 1O-04 15:30 Preparation and structure of pillared carbons for electric -
Capacitance of Two-Dimensional Titanium Carbide (Mxene) and Mxene/Carbon Nanotube Composites in Organic Electrolytes
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Open Archive Toulouse Archive Ouverte Open Archive TOULOUSE Archive Ouverte ( OATAO ) OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 16795 To link to this article : DOI : 10.1016/j.jpowsour.2015.12.036 URL : http://dx.doi.org/10.1016/j.jpowsour.2015.12.036 To cite this version : Dall’Agnese, Yohan and Rozier, Patrick and Taberna, Pierre-Louis and Gogotsi, Yury and Simon, Patrice Capacitance of two-dimensional titanium carbide (MXene) and MXene/carbon nanotube composites in organic electrolytes . (2016) Journal of Power Sources, vol. 306. pp. 510-515. ISSN 0378-7753 Any correspondence concerning this service should be sent to the repository administrator: [email protected] Capacitance of two-dimensional titanium carbide (MXene) and MXene/carbon nanotube composites in organic electrolytes Yohan Dall’Agnese a, b, c, Patrick Rozier a, b, Pierre-Louis Taberna a, b, Yury Gogotsi c, Patrice Simon a, b, * a Universite Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 Route de Narbonne, 31062 Toulouse, France b Reseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459, France c Department of Materials Science and Engineering, A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA h i g h l i g h t s graphical abstract 3 types of Ti3C2 electrodes were prepared: clay, delaminated and CNT composite. -
Antimicrobial Properties of 2D Mno2 and Mos2 Nanomaterials Vertically Aligned on Graphene Materials and Ti3c2 Mxene
Subscriber access provided by Temple University Libraries Biological and Environmental Phenomena at the Interface Antimicrobial Properties of 2D MnO2 and MoS2 Nanomaterials Vertically Aligned on Graphene Materials and Ti3C2 MXene Farbod Alimohammadi, Mohammad Sharifian Gh., Nuwan H. Attanayake, Akila C. Thenuwara, Yury Gogotsi, Babak Anasori, and Daniel R. Strongin Langmuir, Just Accepted Manuscript • DOI: 10.1021/acs.langmuir.8b00262 • Publication Date (Web): 21 May 2018 Downloaded from http://pubs.acs.org on May 29, 2018 Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts. -
Yury G. Gogotsi
RÉSUMÉ Yury Gogotsi Drexel University Phone: (215) 895-6446 Department of Materials Science and Engineering FAX: (215) 895-1934 3141 Chestnut St. E-mail: [email protected] Philadelphia, PA 19104 http://nano.materials.drexel.edu Education D.Sc. Materials Engineering, National Academy of Sciences, Ukraine, 1995 Thesis title: Interactions of Non-Oxide Structural Ceramics with High-Temperature Gaseous Media and Development of Methods for Improving Their Corrosion Resistance Ph.D. Physical Chemistry, Kiev Polytechnic Institute, Ukraine, 1986 Thesis title: High-Temperature Corrosion of Structural Ceramics Based on Silicon Nitride, Silicon Carbide and Boron Carbide. Thesis advisor: Prof. V.A. Lavrenko M.S. Metallurgy, Kiev Polytechnic Institute, Ukraine, 1984 (with Honors, 5.0 perfect GPA) Post-Doctoral Fellowships Center for Materials Research, University of Oslo, Norway (with Per Kofstad) 1993 - 1995 NATO/Norwegian Research Council Fellowship Hydrothermal synthesis and high-temperature oxidation of ceramics. Tokyo Institute of Technology, Japan (with Masahiro Yoshimura) 1992 - 1993 Japan Society for the Promotion of Science (JSPS) Fellowship Hydrothermal corrosion of SiC and hydrothermal synthesis of carbon. University of Karlsruhe, Germany (with Fritz Thümmler and Georg Grathwohl) 1990 - 1992 A. von Humboldt Fellowship Creep and high-temperature oxidation of silicon nitride based ceramics. Work History Drexel University Since 05/2017 Charles T. and Ruth M. Bach Endowed Professor 09/2010 – present Distinguished University Professor 09/2008 -
The Potential for Climate Change- Related Migration
WHERE TO NOW? THE POTENTIAL FOR CLIMATE CHANGE- RELATED MIGRATION What is the state of the international approach to the potential problem of climate change-related migration, and what contribution does Hodgkinson, Anderson, Burton and Young’s proposed Climate Change Displaced Persons Convention make to the international approach? 1 A Thesis Submitted to the Victoria University of Wellington in Partial Fulfillment of the Requirements for the Degree of Master of International Relations (MIR) School of History, Philosophy, Political Science and International Relations Victoria University of Wellington Anne Cawthorn 300071159 June 2012 2 ACKNOWLEDGEMENTS This thesis would not have been possible without the help and support of Martin, Frances, Bella, and Alex; of Kate McMillan and my colleagues Paul, Charlotte, Steph and Jo. 3 LIST OF ACRONYMS General Acronyms AOSIS Alliance of Small Island States (Negotiating group under the UN) CCCDP Convention for Climate Change Displaced Persons (Hodgkinson, Burton, Anderson and Young) IPCC Intergovernmental Panel on Climate Change (UNFCCC’s scientific arm, which brings together scientists and science on climate change from all over the world) SIDS Small Island Developing States SIS Small Island States UNFCCC United Nations Framework Convention on Climate Change (Convention establishing responses to anthropogenic climate change. Successor document currently under negotiation by 195 states.) UDHR Universal Declaration of Human Rights Convention for Climate Change Displaced Persons Acronyms CCDO Climate -
[2013] Nzhc 3125
IN THE HIGH COURT OF NEW ZEALAND AUCKLAND REGISTRY CIV-2013-404-3528 [2013] NZHC 3125 BETWEEN IOANE TEITIOTA Applicant AND THE CHIEF EXECUTIVE OF THE MINISTRY OF BUSINESS INNOVATION AND EMPLOYMENT Respondent Hearing: 16 October 2013 Appearances: M J Kidd for the Applicant R E Savage for the Respondent Judgment: 26 November 2013 JUDGMENT OF PRIESTLEY J This judgment was delivered by me on Tuesday 26 November 2013 at 2.30 pm pursuant to Rule 11.5 of the High Court Rules. Registrar/Deputy Registrar Date:…………………………. Counsel/Solicitors: M J Kidd, Barrister and Solicitor, Henderson R E Savage, Crown Solicitors, Auckland TEITIOTA v THE CHIEF EXECUTIVE OF THE MINISTRY OF BUSINESS INNOVATION AND EMPLOYMENT [2013] NZHC 3125 [26 November 2013] Refugees [1] The immediate aftermath of the Second World War presented the then international community with a number of challenges. One such challenge was to provide some mechanism for the protection of human beings who were the victims of persecution. [2] The League of Nations, which some hoped would prevent or curtail warfare by collective security arrangements, had clearly failed. The Axis powers in Europe, spearheaded by Hitler’s Third Reich, had systematically persecuted and killed millions of people, singling them out for concentration camps upon the grounds of their ethnicity, race, or religion. [3] The defeat of Fascism in 1945 did not end persecution. Riding into central European countries behind the tanks of the Red Armies came communist regimes. These governments, nurtured by the Soviet Union (which had already tipped its hand with the execution of Polish middle class leaders and army officers in the forests at Katyn) set about imposing Marxist-Leninist regimes which were to blight the lives of millions of people for two generations. -
ANNUAL REPORT of the Secretariat of the Pacific Regional Environment Programme
Value Island Biodiversity – it’s our life 2010 ANNUAL REPORT of the Secretariat of the Pacific Regional Environment Programme SPREP ANNUAL REPORT 2010 2010 ANNUAL REPORT of the Secretariat of the Pacific Regional Environment Programme SPREP Library – Cataloguing in Publication Data Secretariat of the Pacific Regional Environment Programme SPREP Annual Report: 2010. Value Island Biodiversity – It’s Our Life. – Apia, Samoa : SPREP, 2011. p. 29 cm ISSN: 1562-675X 1. Secretariat of the Pacific Regional Environment Programme (SPREP). I. Title 363.7099 Cover photo: O le Pupu Pue coastline, Samoa Photo by Stuart Chape. Secretariat of the Pacific Regional Environment Programme authorises the reproduction of this material, whole or in part, provided appropriate acknowledgement is given. SPREP, PO Box 240, Apia, Samoa T: +685 21929 F: +685 20231 E: [email protected] W: www.sprep.org This publication is also available electronically from SPREP’s web site. Design: Helen Dean Design, Melbourne, Australia SPREP ANNUAL REPORT 2010 PHOTO – S. Chape CONTENTS ENVIRONMENTAL GOVERNANCE 28 FOREWORD 2 Replenishing the Global Environment Facility 28 Mainstreaming and strengthening 29 INTRODUCTION 4 Environmental assessment and planning 29 A new monitoring and assessment system 29 VALUE ISLAND BIODIVERSITY – IT’S OUR LIFE 9 Mainstreaming frameworks and agreements 29 International Year of Biodiversity in the Pacific 9 The Pacific voyage to Nagoya 9 POLLUTION CONTROL AND WASTE MANAGEMENT 30 Pacific highlights to COP 10 10 Solid waste management 30 Shipping-related