Journal ArticleDOI
Applications of 2D MXenes in energy conversion and storage systems
Jinbo Pang,Rafael G. Mendes,Rafael G. Mendes,Alicja Bachmatiuk,Alicja Bachmatiuk,Alicja Bachmatiuk,Liang Zhao,Huy Q. Ta,Thomas Gemming,Hong Liu,Hong Liu,Zhongfan Liu,Zhongfan Liu,Mark H. Rümmeli,Mark H. Rümmeli,Mark H. Rümmeli +15 more
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TLDR
The potential of MXenes for the photocatalytic degradation of organic pollutants in water, such as dye waste, is addressed, along with their promise as catalysts for ammonium synthesis from nitrogen.Abstract:
Transition metal carbides and nitrides (MXenes), a family of two-dimensional (2D) inorganic compounds, are materials composed of a few atomic layers of transition metal carbides, nitrides, or carbonitrides. Ti3C2, the first 2D layered MXene, was isolated in 2011. This material, which is a layered bulk material analogous to graphite, was derived from its 3D phase, Ti3AlC2 MAX. Since then, material scientists have either determined or predicted the stable phases of >200 different MXenes based on combinations of various transition metals such as Ti, Mo, V, Cr, and their alloys with C and N. Extensive experimental and theoretical studies have shown their exciting potential for energy conversion and electrochemical storage. To this end, we comprehensively summarize the current advances in MXene research. We begin by reviewing the structure types and morphologies and their fabrication routes. The review then discusses the mechanical, electrical, optical, and electrochemical properties of MXenes. The focus then turns to their exciting potential in energy storage and conversion. Energy storage applications include electrodes in rechargeable lithium- and sodium-ion batteries, lithium-sulfur batteries, and supercapacitors. In terms of energy conversion, photocatalytic fuel production, such as hydrogen evolution from water splitting, and carbon dioxide reduction are presented. The potential of MXenes for the photocatalytic degradation of organic pollutants in water, such as dye waste, is also addressed, along with their promise as catalysts for ammonium synthesis from nitrogen. Finally, their application potential is summarized.read more
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Nitrogen-Doped Mesoporous Carbon Promoted Chemical Adsorption of Sulfur and Fabrication of High-Areal-Capacity Sulfur Cathode with Exceptional Cycling Stability for Lithium-Sulfur Batteries
TL;DR: In this article, a mesoporous nitrogen-doped carbon (MPNC)-sulfur nanocomposite is reported as a novel cathode for advanced Li-S batteries.
Pseudocapacitive Electrodes Produced By Oxidant-Free Polymerization of Pyrrole Between the Layers of 2D Titanium Carbide (MXene)
TL;DR: Heterocyclic pyrrole molecules are in situ aligned and polymerized in the absence of an oxidant between layers of the 2D Ti3C2Tx (MXene), resulting in high volumetric and gravimetric capacitances with capacitance retention of 92% after 25,000 cycles at a 100 mV s(-1) scan rate as discussed by the authors.
Journal ArticleDOI
Nanomaterials: a review of synthesis methods, properties, recent progress, and challenges
TL;DR: Nanomaterials have emerged as an amazing class of materials that consists of a broad spectrum of examples with at least one dimension in the range of 1 to 100 nm as discussed by the authors.
Journal ArticleDOI
A general Lewis acidic etching route for preparing MXenes with enhanced electrochemical performance in non-aqueous electrolyte
Youbing Li,Hui Shao,Hui Shao,Zifeng Lin,Jun Lu,Liyuan Liu,Liyuan Liu,Benjamin Duployer,Benjamin Duployer,Per Persson,Per Eklund,Lars Hultman,Mian Li,Ke Chen,Xian-Hu Zha,Shiyu Du,Patrick Rozier,Patrick Rozier,Zhifang Chai,Encarnacion Raymundo-Piñero,Encarnacion Raymundo-Piñero,Pierre-Louis Taberna,Pierre-Louis Taberna,Patrice Simon,Patrice Simon,Patrice Simon,Qing Huang +26 more
TL;DR: A generic Lewis acidic etching route for preparing high-rate negative-electrode MXenes with enhanced electrochemical performance in non-aqueous electrolyte is proposed and validated by the synthesis of various MXenes from unconventional MAX-phase precursors with A elements Si, Zn and Ga.
Journal ArticleDOI
Two-dimensional MXenes: From morphological to optical, electric, and magnetic properties and applications
Xiantao Jiang,Artem V. Kuklin,Alexander Baev,Yanqi Ge,Hans Ågren,Hans Ågren,Han Zhang,Paras N. Prasad +7 more
TL;DR: In this article, the state-of-the-art progress on MXene theory, materials synthesis techniques, morphology modifications, opto-electro-magnetic properties, and their applications are comprehensively discussed.
References
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Journal ArticleDOI
Highly Conductive and Porous Activated Reduced Graphene Oxide Films for High-Power Supercapacitors
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Journal ArticleDOI
Progress in research and development on MAX phases: a family of layered ternary compounds
TL;DR: The MAX phases are a group of layered ternary compounds with the general formula Mn+1AXn (M: early transition metal; A: group A element; X: C and/or N; n = 1-3), which combine some properties of metals such as good electrical and thermal conductivity, machinability, low hardness, thermal shock resistance and damage tolerance, with those of ceramics, such as high elastic moduli, high temperature strength, and oxidation and corrosion resistance as mentioned in this paper.
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A high-performance supercapacitor-battery hybrid energy storage device based on graphene-enhanced electrode materials with ultrahigh energy density
TL;DR: In this paper, a supercapacitor-battery hybrid energy storage device was designed and fabricated, which combines an electrochemical double layer capacitance (EDLC) type positive electrode with a Li-ion battery type negative electrode.
Journal ArticleDOI
Highly active and durable nanostructured molybdenum carbide electrocatalysts for hydrogen production
Wei-Fu Chen,Chiu Hui Wang,Kotaro Sasaki,Nebojsa Marinkovic,Wenqian Xu,James T. Muckerman,Y. Zhu,Radoslav R. Adzic +7 more
TL;DR: In this article, molybdenum carbide (β-Mo2C) nanoparticles are prepared by in situ carburization of ammonium molydate on carbon nanotubes and XC-72R carbon black without using any gaseous carbon source.