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
MXenes/graphene heterostructures for Li battery applications: a first principles study
TL;DR: In this paper, the stable stacking configurations of M2CX2/graphene bilayer heterostructures and their Li atom intercalation were determined by calculating the Li binding energy, diffusion barrier and voltage.
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Tunable Multipolar Surface Plasmons in 2D Ti3C2Tx MXene Flakes
TL;DR: Scanning transmission electron microscopy combined with ultra-high-resolution electron energy loss spectroscopy is used to investigate the spatial and energy distribution of SPs (both optically active and forbidden modes) in mono- and multilayered Ti3C2 T x flakes.
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Rechargeable lithium–air batteries: a perspective on the development of oxygen electrodes
TL;DR: In this article, the authors introduce recent advances in the development of LABs, particularly focusing on the cathodes based on a fundamental understanding of Li-O2 electrochemistry, and review the remaining technical challenges.
Journal Article
Hybrid two-dimensional materials in rechargeable battery applications and their microscopic mechanisms
TL;DR: In this paper, a review of 2D nanomaterials and their composites for energy storage devices, especially rechargeable batteries, offers opportunities to timely tackle the challenges of ever growing clean and sustainable energy demands.
Journal ArticleDOI
Adding a New Member to the MXene Family: Synthesis, Structure, and Electrocatalytic Activity for the Hydrogen Evolution Reaction of V4C3Tx
Minh Hai Tran,Timo Schäfer,Ali Shahraei,Michael Dürrschnabel,Leopoldo Molina-Luna,Ulrike I. Kramm,Christina S. Birkel +6 more
TL;DR: Two-dimensional transition-metal-based carbides (or nitrides), so-called MXenes, that can be derived from the three-dimensional MAX phases, have attracted considerable attention throughout the past decade as discussed by the authors.