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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Niobium and Titanium Carbides (MXenes) as Superior Photothermal Supports for CO2 Photocatalysis.
Zhiyi Wu,Chaoran Li,Zhao Li,Kai Feng,Mujin Cai,Dake Zhang,Shenghua Wang,Mingyu Chu,Chengcheng Zhang,Jiahui Shen,Zheng Huang,Yanling Xiao,Geoffrey A. Ozin,Xiaohong Zhang,Le He +14 more
TL;DR: In this paper, the discovery of MXene materials as superior photothermal supports for metal nanoparticles was reported, and they demonstrated that Nb2C and Ti3C2, two typical MXene material, can enhance the photothermal effect and thus boost photothermal catalytic activity of Ni nanoparticles, achieving a record CO2 conversion rate of 8.50 mol·gNi-1·h-1.
Journal ArticleDOI
One MAX phase, different MXenes: a guideline to understand the crucial role of etching conditions on Ti3C2Tx surface chemistry
Mohamed Benchakar,Lola Loupias,Cyril Garnero,Thomas Bilyk,Cláudia Morais,Christine Canaff,Nadia Guignard,Sophie Morisset,Hanna Pazniak,S. Hurand,Patrick Chartier,J. Pacaud,Vincent Mauchamp,Michel W. Barsoum,Aurélien Habrioux,Stéphane Célérier +15 more
TL;DR: In this article, the authors highlight how etching agents govern surface chemistries of Ti3C2Tx, the most widely studied MXene to date, and demonstrate that the etching agent strongly modifies the nature of surface terminal groups (F, OH and/or O), oxidation sensitivity, delamination ability, nature of inserted species, interstratification, concentration of defects and size of flakes.
Journal ArticleDOI
Recent advances in 2D MXenes for enhanced cation intercalation in energy harvesting Applications: A review
TL;DR: In this article, a review of 2D transition metal carbides, carbonitrides and nitrides in conjunction with surface terminations namely fluorine, hydroxyl or oxygen which add hydrophilicity to their surfaces is presented.
Journal ArticleDOI
Highly sensitive, robust and anisotropic MXene aerogels for efficient broadband microwave absorption
TL;DR: In this article, a lightweight, robust and porous MXene/polyimide (MP) aerogels with reversible compressibility, anisotropic pressure sensitivity and microwave absorption performances are fabricated by interface reinforcement and bidirectional-freezing approach.
Journal ArticleDOI
Correction to High-Energy-Density Hydrogen-Ion-Rocking-Chair Hybrid Supercapacitors Based on Ti3C2Tx MXene and Carbon Nanotubes Mediated by Redox Active Molecule.
Minmin Hu,Minmin Hu,Cong Cui,Cong Cui,Chao Shi,Zhong-Shuai Wu,Jinxing Yang,Jinxing Yang,Renfei Cheng,Renfei Cheng,Tianjia Guang,Tianjia Guang,Hailong Wang,Hongxia Lu,Xiaohui Wang +14 more
TL;DR: This work proposes a strategy to achieve high energy density of hydrogen ion aqueous-based hybrid supercapacitor by integrating a negative electrode of Ti3C2 T x MXene and a positive electrode of redox-active hydroquinone (HQ)/carbon nanotubes and results provide the possibility of designing high-energy-density noble-metal-free asymmetricsupercapacitors for practical applications.
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Journal ArticleDOI
Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti 3 AlC 2
Michael Naguib,Murat Kurtoglu,Volker Presser,Jun Lu,Junjie Niu,Min Heon,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +8 more
TL;DR: 2D nanosheets, composed of a few Ti 3 C 2 layers and conical scrolls, produced by the room temperature exfoliation of Ti 3 AlC 2 in hydrofl uoric acid are reported, which opens a door to the synthesis of a large number of other 2D crystals.