دانلود رایگان مقاله لاتین ابرخازن از سایت الزویر
عنوان فارسی مقاله:
غشای نازک مزوپور کربن دوپ نیتروژن برای ابرخازن binder-free
عنوان انگلیسی مقاله:
Nitrogen-doped mesoporous carbon thin film for binder-free supercapacitor
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Porous carbon materials are of great importance and promising applications in electrode materials [1–5]. Various methods have been developed to synthesize porous carbons, including chemical vapour decomposition, laser ablation, chemical or physical activation, carbonization of polymer aerogels, carbide-derived carbon, template procedures [6–10]. Besides the high surface area and porosity, pseudocapacitance also contributed to the specific capacitance. Doping nitrogen (N) into carbon material has been an effective way to enhance the electrochemical performance, mainly due to the extra faradaic redox reactions, and the strong electron donor behavior ofnitrogen, and strengthening the wettability ofthe interface between the electrolyte and electrodes [11–15]. In most cases, nitrogen-containing carbon materials have been achieved through reaction with nitrogen-containing reagents [16,17]. However,the post-treatment processing (such as treating with NH3 gas) generally leads to low nitrogen content. This drawback might be overcome by carbonization of nitrogen-rich carbon precursors [18]. Gelatin, a low cost and abundant fibrous and nitrogen-rich protein, is expected to be an ideal precursor for the synthesis of nitrogen-doped carbon for supercapacitor [19,20]. In order to further enhance the performance, harsh activation processes were explored. Very recently, gelatin has been carbonized to carbon by using SBA-15, and sepiolite as templates, respectively [21–23].However, most of the prepared nitrogen-doped carbons were in powder form. Typically, non-electrochemical active binders are requested to assemble them into electrodes for supercapacitors. This could result in less active materials loading and lower power density. In addition for thin film like electronic devices, freestanding binder-free thin films electrodes are highly demanded. Up to date, free-standing mesoporous nitrogen-doped carbon thin film for binder-free supercapacitor electrode has scarcely reported. Herein, we demonstrate a novel way for the synthesis of free-standing mesoporous nitrogen-doped carbon films (mp-NCF) through carbonizing gelatin/HKUST-1 porous composite film without activation process. The gelatin/HKUST-1 film was prepared by reacting gelatin/copper hydroxide nanostrands (CHNs) thin film with H3BTC at room temperature. Because ofthe growth of HKUST- 1 crystals, the compacted gelatin/CHNs film (about 1 m thick) was converted to 4.8 m thick and porous gelatin/HKUST-1 thin film. After carbonization under argon at different temperature and removing away the remained copper particles, free-standing mesoporous nitrogen-doped carbon film was obtained and used as binder-free electrode for supercapacitor. It shows 168 F g−1 at current density of 5Ag−1 and retained 156.2 F g−1 after cycling 11,000 cycles with 0.00064% degradation per cycles.
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کلمات کلیدی:
A controllable synthesis of nitrogen-doped mesoporous carbon ... pubs.rsc.org › Journals › RSC Advances by J Hu - 2016 - Related articles A highly active and stable catalyst for hydrodesulfurization (HDS) was developed based on the in situ formation of MoS2 on nitrogen-doped mesoporous carbon ... Integrated Synthesis of Nitrogen-Doped Mesoporous Carbon from ... pubs.acs.org/doi/abs/10.1021/jp410198r by M Li - 2014 - Cited by 58 - Related articles Jan 16, 2014 - An integrated and reproducible chemical process was developed to fabricate the N-doped mesoporous carbon by using melamine resin as ... Nitrogen-Doped Mesoporous Carbon for Carbon Capture – A ... pubs.acs.org/doi/abs/10.1021/jp301450m by R Babarao - 2012 - Cited by 29 - Related articles Feb 29, 2012 - This work indicates that nitrogen doping is a promising strategy to create mesoporous carbons for high-capacity, selective carbon capture. Magnetically separable nitrogen-doped mesoporous carbon with high ... link.springer.com/article/10.1007/s10853-015-9706-5 by T Liang - 2016 - Cited by 6 - Related articles Magnetically separable nitrogen-doped mesoporous carbon with high adsorption capacity. Authors; Authors and affiliations. Tao Liang; Fangxiao Wang ... Synthesis of Nitrogen‐Doped Mesoporous Carbon Spheres with Extra ... onlinelibrary.wiley.com/doi/10.1002/anie.201407629/abstract by J Tang - 2015 - Cited by 176 - Related articles Nov 12, 2014 - The synthesis of highly nitrogen-doped mesoporous carbon spheres (NMCS) is reported. The large pores of the NMCS were obtained through ... Synthesis of 2D Nitrogen-Doped Mesoporous Carbon Catalyst ... - MDPI www.mdpi.com/1996-1944/10/2/197 by Z Yu - 2017 Feb 17, 2017 - 2D nitrogen-doped mesoporous carbon (NMC) is synthesized by using a mesoporous silica film as hard template, which is then investigated as ...
