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is available on our Permission Requests page. © 1997-2020 LUMITOS AG, All rights reserved, https://www.chemeurope.com/en/publications/440161/, Your browser is not current. Authors contributing to RSC publications (journal articles, books or book chapters) The PCNFs feature polygonal cross sections with side lengths ranging from 200 nm to 400 nm, as primarily determined by the orthorhombic structure of the Ni3Sn2 compound. or in a thesis or dissertation provided that the correct acknowledgement is given KOH activation of CNF-1 at 850 °C resulted in 491 m 2 /g surface area and 74% (w/w) yield (26% burnt-off). For reproduction of material from all other RSC journals and books: For reproduction of material from all other RSC journals. Your changes will in fact be stored however can be lost at all times. ity of carbon-based supercapacitors [18]. contained in this article in third party publications With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter. You do not have JavaScript enabled. Read what you need to know about our industry portal chemeurope.com. Add / edit notice, my watchlist Carbon materials have attracted intense interests as electrode materials for electrochemical capacitors, because of their high surface area, electrical conductivity, chemical stability and low cost. Polygonal carbon nanofibers (PCNFs) were prepared on a large scale by chemical vapor deposition using Ni3Sn2 intermetallic compound as a catalyst. You are currently not logged in to my.chemeurope.com . Weigang Zhao, a Lu Luo, a Hongyan Wang, b and Mizi Fan c, * Activated carbons (ACs) were developed from the agricultural by-products of moso bamboo by pyrolysis carbonization and the KOH activation process. Because their availability, adjustable microstrucutre, varieties of forms, and large specific surface area, porous carbon materials are of increasing interests in hydrogen storage adsorbent and the electrode materials in supercapacitors and lithium-sulfur cells from the view point of social sustainability an, My notice: If you are the author of this article you do not need to formally request permission If you are not the author of this article and you wish to reproduce material from This may take some time to load. jiacheng.wang@chemie.tu-dresden.de, stefan.kaskel@chemie.tu-dresden.de Corresponding authors, a Because their availability, adjustable microstrucutre, varieties of forms, and large specific surface area, porous carbon materials are of increasing interests in hydrogen storage adsorbent and the electrode materials in supercapacitors and lithium-sulfur cells from the view point of social sustainability an. In all cases the Ref. Your browser does not support JavaScript. article provided that the correct acknowledgement is given with the reproduced material. to access the full features of the site or access our, Department of Inorganic Chemistry, Dresden University of Technology, Bergstraβe 66, D-01069 Dresden, Germany, Instructions for using Copyright Clearance Center page. In particular, the chemical activation of various carbon sources using KOH as the activating reagent is very promising because of its lower activation temperature and higher yields, and well-defined micropore size distribution and ultrahigh specific surface area up to 3000 m 2 g −1 of the resulting porous carbons. Activated carbon (AC) with a very high surface area of over 2000 m2/g was produced from low sulfur acid hydrotropic lignin (AHL) from poplar wood using H3PO4 at a moderate temperature of 450 °C (AHL-AC6). Abstract High volumetric performance is a challenging issue for carbon‐based electrical double‐layer capacitors (EDLCs). * Therefore, much effort has been made to synthesize and tailor the microstructures of porous carbon materials via various activation procedures (physical and chemical activation). Synthesis of Bamboo-Based Activated Carbons with Super-High Specific Surface Area for Hydrogen Storage. The resulting H-induced weakening of the molecular structure together with the exothermic nat ... more, Silver(I)-catalyzed sequential hydroamination and Prins type cyclization for the synthesis of fused benzo--sultams, An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 8 ... more, ‘Forensic fingers’ for crime scene investigation, A team of scientists in the United States has developed a wearable fingertip sensor to enable crime scene investigators to rapidly detect explosives and gunshot residue. To use all functions of this page, please activate cookies in your browser. Activated carbons produced by different activation processes from various precursors are … In this work, N-doped activated carbon (NOAC) has been synthesized by KOH activation of petroleum coke (PC), followed by ammonia treatment in order to im-prove the capacitive properties and thus enhance their energy storage performance as electrode materials. In this feature article, we will cover recent research progress since 2007 on the synthesis of KOH-activated carbons for hydrogen and electrical energy storage (supercapacitors and lithium–sulfur batteries). do not need to formally request permission to reproduce material contained in this Instructions for using Copyright Clearance Center page for details. The electrode materials including carbon–based materials, metallic oxide materials and conducting polymer materials [19]. Fetching data from CrossRef. During the last decade, two-dimensional materials (2DMs) have attracted great attention due to their unique chemical and physical properties, which make them appealing platforms for diverse applications in opto-electronic devices, energy generation and storage, and sensing. Carbon materials have attracted intense interests as electrode materials for electrochemical capacitors, because of their high surface area, electrical conductivity, chemical stability and low cost. Find out how LUMITOS supports you with online marketing. Activated carbons produced by different activation processes from … Following the introduction to KOH activation mechanisms and processing technologies, the characteristics and performance of KOH-activated carbons as well as their relationships are summarized and discussed through the extensive analysis of the literature based on different energy storage systems. The low cost of raw material and the facile fabrication process, together with the high electrochemical performance, make our ACF electrode highly applicable for the mass production of flexible energy-storage devices. "Reproduced from" can be substituted with "Adapted from". Department of Inorganic Chemistry, Dresden University of Technology, Bergstraβe 66, D-01069 Dresden, Germany In particular, the chemical activation of various carbon sources using KOH as the activating reagent is very promising because of its lower activation temperature and higher yields, and well-defined micropore size distribution and ultrahigh specific surface area up to 3000 m2 g−1 of the resulting porous carbons. Activated carbon (AC-28) obtained by KOH activation with a KOH/hydrochar ratio of 2 at 800 °C has a well-developed porosity with a surface area and pore volume of 1 262 m 2 /g and 0.70 cm 3 /g, respectively, while a reduction of the activation temperature to 600 °C (AC-26) results in a material whose corresponding values are 947 m 2 /g and 0.51 cm 3 /g. Information about reproducing material from RSC articles with different licences the ability of energy storage [18]. This review summarizes the key developments in high‐efficiency utilization of carbon materials for supercapacitors, and discusses the impact of their pore engineering, conductive network, and surface engineering on the energy storage ability, including the utilization of the carbon surface and space (Figure 2). Shortly, this chapter will discuss how superior energy storage may be obtained through various routes like using pyrrolic (N5) and pyridinic (N6) doping in advanced carbon functional materials, or superior energy by KOH activation in carbon materials, or through carbonization in organic matter, respectively. In this feature article, we will cover recent research progress since 2007 on the synthesis of KOH … The PCNFs feature polygonal cross sections with side lengths ranging from 200 nm to 400 nm, as primarily determined by the orthorhombic structure of the Ni3Sn2 compound. ACs with similar surface areas were also obtained under the same activation condition from commercial hardwood alkali lignin and lignosulfonate. The surface area of CNF-1 started to increase by activation at higher than 600 °C with corresponding decrease of carbon yields. XX is the XXth reference in the list of references. Polygonal carbon nanofibers (PCNFs) were prepared on a large scale by chemical vapor deposition using Ni3Sn2 intermetallic compound as a catalyst. Go to our Abstract High volumetric performance is a challenging issue for carbon‐based electrical double‐layer capacitors (EDLCs). Ef-fects of pre-oxidization (HNO Full Article. 1 shows the effects of activation temperature on the yield and surface area of CNF-1 in KOH activation (activation time is 1 h). with the reproduced material. the whole article in a third party publication with the exception of reproduction Because of their availability, adjustable microstructure, varieties of forms, and large specific surface area, porous carbon materials are of increasing interest for use in hydrogen storage adsorbents and electrode materials in supercapacitors and lithium–sulfur cells from the viewpoint of social sustainability and environmental friendliness. ... which enables a fast ion transport channel and makes it a promising electrode material for high power energy storage devices. Different activation processes from various precursors are … the ability of energy storage devices own and... Materials [ 19 ] were also obtained under the same activation condition from hardwood. Permission to reproduce figures, diagrams etc. ) Area for Hydrogen storage website individual! From all other RSC journals nanotubes, carbon aerogels, carbide-derived carbons,,! Copyright Clearance Center page for details of the most promising candidates, supercapacitor. For carbon‐based electrical double‐layer capacitors ( EDLCs ) functions on Chemie.DE aerogels carbide-derived. For carbon‐based electrical double‐layer capacitors ( EDLCs ) company LUMITOS and our team channel and it. Browser is not current on our permission Requests page and numerous electrodes materials been! Ion transport channel and makes it a promising electrode material for High energy! Permission Requests page: for reproduction of material from all other RSC journals a. Be lost at all times Super-High Specific surface Area of CNF-1 started to increase by activation at higher than °C... Copyright Clearance Center page for details EDLCs ) do not need to know about our industry portal.! 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