Transition metal carbide-based materials: synthesis and applications in electrochemical energy storage

2016 ◽  
Vol 4 (27) ◽  
pp. 10379-10393 ◽  
Author(s):  
Ying Xiao ◽  
Jang-Yeon Hwang ◽  
Yang-Kook Sun

Transition metal carbides have attracted vast interest over the past years due to their appealing properties such as high conductivity, high chemical stability and thermal stability.

2018 ◽  
Vol 20 (34) ◽  
pp. 22179-22186 ◽  
Author(s):  
Martí López ◽  
Luke Broderick ◽  
John J. Carey ◽  
Francesc Viñes ◽  
Michael Nolan ◽  
...  

The CO2capture and activation on early transition metal carbides can be fine-tuned by surface doping of similar metals as evidenced by state-of-the-art density functional simulations of the adsorption and desorption rates on suited models.


2016 ◽  
Vol 6 (3) ◽  
pp. 602-616 ◽  
Author(s):  
Mark M. Sullivan ◽  
Cha-Jung Chen ◽  
Aditya Bhan

We highlight the evolution and tunability of catalytic function of transition metal carbides under oxidative and reductive environments for selective deoxygenation reactions.


Author(s):  
Chenfei Yao ◽  
Ge Shi ◽  
Yijie Hu ◽  
Hao Zhuo ◽  
Zehong Chen ◽  
...  

The development of emulsion templated functional materials has achieved great progress in the past decades in academic and industrial fields. Recently, new building blocks such as graphene, transition metal carbides...


Author(s):  
Pragati Shinde ◽  
Amar Patil ◽  
Su Chan Lee ◽  
Euigeol Jung ◽  
Seong Chan Jun

Since the discovery of Ti3C2Tx in early 2011, a newly emerging family of post-graphene two-dimensional transition metal carbides and nitrides (MXenes) has been rigorously investigated owing to their high conductivity....


2018 ◽  
Vol 6 (17) ◽  
pp. 7794-7806 ◽  
Author(s):  
Jianmin Luo ◽  
Cong Fang ◽  
Chengbin Jin ◽  
Huadong Yuan ◽  
Ouwei Sheng ◽  
...  

2D transition metal carbide materials called MXene have attracted significant interest in the field of electrochemical energy storage due to their high electrical conductivity and high volumetric capacity.


RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110301-110306 ◽  
Author(s):  
Hesham Al Salem ◽  
Venkateswara Rao Chitturi ◽  
Ganguli Babu ◽  
Juan A. Santana ◽  
Deepesh Gopalakrishnan ◽  
...  

Metal carbides nanostrcutures to stabilize polysulfide shuttle which is a key bottleneck for practical applications of Li–S battery.


1992 ◽  
Vol 271 ◽  
Author(s):  
Tom Gallo ◽  
Carl Greco ◽  
Claude Peterson ◽  
Frank Cambria ◽  
Johst Burk

ABSTRACTTransition metal carbide precursors have been made in the past by the reaction of alkoxides with polymeric materials to form gels and resins. A new route to transition metal carbide precursors has been developed using alkoxides polymerized with dicarboxylic acids. (Dicarboxylic acid precursors have the advantage of precipitating as powders that can be removed from solvents by filtration and that are not very air sensitive.) Precursors were pyrolyzed under inert or reducing conditions to form metal carbides.The choice of ligand(s) determined the carbon content after pyrolysis. Unsaturated ligands tended to increase carbon content. Materials from oils to fine powders were produced by varying the stereochemistry of the ligands. The morphology of the pyrolyzed product mimicked that of the precipitated powder. Pyrolysis was typically carried out under Ar/H2 at 1200–1600°C. X-ray diffraction (XRD) was used to follow the incorporation of carbon into the lattice.


2018 ◽  
Author(s):  
Marti Lopez ◽  
Luke Broderick ◽  
John J Carey ◽  
Francesc Vines ◽  
Michael Nolan ◽  
...  

<div>CO2 is one of the main actors in the greenhouse effect and its removal from the atmosphere is becoming an urgent need. Thus, CO2 capture and storage (CCS) and CO2 capture and usage (CCU) technologies are intensively investigated as technologies to decrease the concentration</div><div>of atmospheric CO2. Both CCS and CCU require appropriate materials to adsorb/release and adsorb/activate CO2, respectively. Recently, it has been theoretically and experimentally shown that transition metal carbides (TMC) are able to capture, store, and activate CO2. To further improve the adsorption capacity of these materials, a deep understanding of the atomic level processes involved is essential. In the present work, we theoretically investigate the possible effects of surface metal doping of these TMCs by taking TiC as a textbook case and Cr, Hf, Mo, Nb, Ta, V, W, and Zr as dopants. Using periodic slab models with large</div><div>supercells and state-of-the-art density functional theory based calculations we show that CO2 adsorption is enhanced by doping with metals down a group but worsened along the d series. Adsorption sites, dispersion and coverage appear to play a minor, secondary constant effect. The dopant-induced adsorption enhancement is highly biased by the charge rearrangement at the surface. In all cases, CO2 activation is found but doping can shift the desorption temperature by up to 135 K.</div>


2020 ◽  
Vol 124 (29) ◽  
pp. 15969-15976 ◽  
Author(s):  
Martí López ◽  
Francesc Viñes ◽  
Michael Nolan ◽  
Francesc Illas

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