Characterisation of ternary TixV1−xNy nitride prepared by mechanosynthesis

Roldán, Manuel A.; Alcalá, M.D.; Real, C.

doi:10.1016/j.ceramint.2011.07.057

Cited by 14 publications

(9 citation statements)

References 57 publications

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“…Furthermore, the Raman signals at 220, 273, 403, 506, and 681 cm −1 are attributable to VN phase,22 indicating the successful preparation of VN (Figure S3, Supporting Information). In Figure 2b, Fourier‐transformed V K‐edge EXAFS spectra of R‐space revealed the increase of VN and VV bond length of VN,23,24 compared with V 2 C MXene (Figure S4, Supporting Information). The existence of VN bond was further corroborated by X‐ray photoelectron spectroscopy (XPS) characterization (Figure S5, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Dial the Mechanism Switch of VN from Conversion to Intercalation toward Long Cycling Sodium‐Ion Battery

Wei

Wang

Chen

et al. 2020

Advanced Energy Materials

105

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Transition metal nitrides are promising energy storage materials in regard to good metallic conductivity and high theoretical specific capacity, but their cycling stability is impeded by the huge volume change caused by the conversion reaction mechanism. Here, a simple strategy to produce an intercalation pseudocapacitive‐type vanadium nitride (VN) by one‐step ammonification of V2C MXene for sodium‐ion batteries is reported. Profiting from a distinctive layered structure pillared by Al atoms in the layer spacing, it delivers a high capacity of 372 mA h g−1 at 50 mA g−1 and a desirable rate performance. More importantly, it shows remarkably long cycling stability over 7500 cycles without capacity attenuation at 500 mA g−1. As expected, it is found that the intercalation pseudocapacitance plays an important role in the excellent performance, by using in situ X‐ray diffraction and ex situ X‐ray absorption structure characterization. Even more remarkable, are the high energy and power density of the sodium‐ion capacitor after coupling with a carbon‐based cathode. The hybrid device possesses an energy density of 78.43 Wh kg−1 at power density of 260 W kg−1. The results clearly show that such a unique‐layered VN with outstanding Na storage capability is an excellent new material for energy storage systems.

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Section: Resultsmentioning

confidence: 99%

Dial the Mechanism Switch of VN from Conversion to Intercalation toward Long Cycling Sodium‐Ion Battery

Wei

Wang

Chen

et al. 2020

Advanced Energy Materials

105

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“…Furthermore, the stoichiometry of the final product is well correlated with the composition of the starting mixture. Among others, h-W 1Àx Al x C (0.33 o x o 0.86), 446 c-Ti x V 1Àx N y , 447 c-Ti 1Àx Al x N (0 o x o 0.5), 448 c-Nb 0.5 Al 0.5 N, 449 c-TiC x N 1Àx , 450 c-NbC x N 1Àx , 451 c-TaC x N 1Àx , 451 c-HfC x N 1Àx , 451 c-Ti y Zr 1Ày C x N 1Àx , 452 c-Ti y Hf 1Ày C x N 1Àx , 452 c-Ti y V 1Ày C x N 1Àx , 452 c-Ti y Nb 1Ày C x N 1Àx , 453 c-Ti y Ta 1Ày C x N 1Àx , 452 c-ZrB 1Àx N x , 454 h-Hf 1Àx Zr x B 2 , 455 h-Ti 1Àx Zr x B 2 428 and h-Ti 1Àx Hf x B 2 (0.5 o x o 1) 428 solid solutions were obtained by milling the stoichiometric elemental mixtures in the appropriate atmosphere.…”

Section: Carbides Nitrides Borides and Silicidesmentioning

confidence: 99%

“…A combustion-like process similar to SHS, which is called a mechanically induced selfsustaining reaction (MSR) has been frequently reported during milling. 378,381,[384][385][386]389,391,406,407,[426][427][428]435,436,439,441,442,447,[450][451][452][453]455 In these cases, the majority of the reactants instantly transform into the products after a critical milling time (the ignition time). Self-sustaining reactions have never been observed for the less exothermic systems (e.g., Cr-C, W-C, Si-C and W-Si).…”

Section: Carbides Nitrides Borides and Silicidesmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

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The aim of this review article on recent developments of mechanochemistry (nowadays established as a part of chemistry) is to provide a comprehensive overview of advances achieved in the field of atomistic processes, phase transformations, simple and multicomponent nanosystems and peculiarities of mechanochemical reactions. Industrial aspects with successful penetration into fields like materials engineering, heterogeneous catalysis and extractive metallurgy are also reviewed. The hallmarks of mechanochemistry include influencing reactivity of solids by the presence of solid-state defects, interphases and relaxation phenomena, enabling processes to take place under non-equilibrium conditions, creating a well-crystallized core of nanoparticles with disordered near-surface shell regions and performing simple dry time-convenient one-step syntheses. Underlying these hallmarks are technological consequences like preparing new nanomaterials with the desired properties or producing these materials in a reproducible way with high yield and under simple and easy operating conditions. The last but not least hallmark is enabling work under environmentally friendly and essentially waste-free conditions (822 references).

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“…Generally they have higher hardness than their binary nitride components [71][72][73][74][75][76]. It has been shown that Ti 1−x X x N (X= Zr, Hf, V, Nb, Ta) can form solid solution over the whole x range (0 < x < 1) and are thermodynamically stable in the rocksalt structure [77,78]. Ti 1−x Zr x N has been well studied by experiments and calculations [72,73,79,80].…”

Section: Ternary Pseudo-binary Nitride Alloysmentioning

confidence: 99%

Properties of multilayered and multicomponent nitride alloys from first principles

Wang¹

2018

Linköping Studies in Science and Technology. Dissertations

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This thesis is a theoretical exploration of properties of multilayered and multicomponent nitride alloys, in particular their mixing thermodynamics and elastic behaviors. Systematic investigation of properties of a large class of materials, such as the multicomponent nitride solid solutions, is in line with the modern approach of high-throughput search of novel materials. In this thesis we benchmark and utilize simple but efficient methodological frameworks in predicting mixing thermodynamics, Young's moduli distribution of multilayer alloys and the linear thermal expansion of quaternary nitride solid solutions.We demonstrate by accurate ab-initio calculations that Ti 1−x Al x N solid solution is stabilized by interfacial effects if it is coherently sandwiched between TiN layers along (001). For TiN/AlN and ZrN/AlN multilayers we show higher thermodynamic stability with semicoherent interfaces than with isostructural coherent ones.Accurate 0 Kelvin elastic constants of cubic Ti x X y Al 1−x−y N (X=Zr, Hf, Nb, V, Ta) solid solutions and their multilayers are derived and an analytic comparison of strengths and ductility are presented to reveal the potential of these materials in hard coating applications. The Young's moduli variation of the bulk materials has provided a reliable descriptor to screen the Young's moduli of coherent multilayers.The Debye model is used to reveal the high-temperature thermodynamics and spinodal decomposition of Ti x Nb y Al 1−x−y N. We show that though the effect of vibration is large on the mixing Gibbs free energy the local spinoal decomposition tendencies are not altered. A quasi-harmonic Debye model is benchmarked against results of molecular dynamics simulations in predicting the thermal expansion coefficients of Ti x X y Al 1−x−y N (X=Zr, Hf, Nb, V, Ta).v Sammanfattning Denna avhandling är en teoretisk undersökning av egenskaperna hos multilager och multikomponentlegeringar av nitrider, särskilt deras blandningstermodynamik och elastiska egenskaper. Systematiska undersökningar av egenskaperna hos en stor materialfamilj, såsom fasta lösningar av multikomponentnitrider, ligger i linje med den moderna angreppsvinkeln av massundersökningar i sökandet efter nya material. I denna avhandling utvärderar och använder vi enkla men effektiva metodologiska ramverk för att förutsäga blandningstermodynamik, fördelning av Young's moduli multilager och den linjära termiska expansionen i kvaternära fasta lösningar av nitrider.Vi visar med precisa ab-initio-beräkningar att en fast lösning av Ti 1−x Al x N stabiliseras av gränssnittseffekter om den placeras koherent mellan TiN-skikt längs med (001). För multilager av TiN/AlN och ZrN/AlN påvisar vi högre termodynamisk stabilitet med semikoherenta gränsskikt än med isostrukturella koherenta. Precisa elastiska konstanter vid 0 K för kubiska fasta lösningar av Ti x X y Al 1−x−y N (X=Zr, Hf, Nb, V, Ta) och deras multilager beräknas och en analytisk jämförelse av deras hållfasthet och duktilitet presenteras för att visa dessa materials potential ...

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Characterisation of ternary TixV1−xNy nitride prepared by mechanosynthesis

Cited by 14 publications

References 57 publications

Dial the Mechanism Switch of VN from Conversion to Intercalation toward Long Cycling Sodium‐Ion Battery

Dial the Mechanism Switch of VN from Conversion to Intercalation toward Long Cycling Sodium‐Ion Battery

Hallmarks of mechanochemistry: from nanoparticles to technology

Properties of multilayered and multicomponent nitride alloys from first principles

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