Vanadium nitride (VN), a typical transition metal nitride, belongs to a cubic crystal system with the space group Fm3m and a cell parameter of a = 4.13916 nm. It has attracted much attention due to its high theoretical capacity, good electronic conductivity, and excellent structural stability [ 30, 31 ].
Learn MoreWith the continuous development of two-dimensional (2D) transition metal carbides and nitrides (collectively referred to as MXene). Nowadays, more than 70 MXene materials have been discovered, and the number is still increasing. Among them, the V2CTx MXene has attracted considerable attentions due to its outstanding physical and chemical …
Learn MoreAbstract. Different from the vanadium-based nanomaterials with oxygen, many oxygen-free vanadium-based nanomaterials that can be used as anodes show high activity in electrochemical energy storage. Such nanomaterials mainly include vanadium sulfide, vanadium nitride, and vanadium carbide. However, the oxygen-free vanadium-based …
Learn MoreRecently, vanadium nitride has been received increased attention in energy storage fields, including supercapacitors and batteries. 9.3.1 Vanadium Nitride for Supercapacitors Generally, supercapacitors can be mainly classified into two types according to the charge storage mechanisms: One is EDLC, the other pseudo …
Learn MoreEnergy Storage Mechanism of Vanadium Nitride via Intercalating Different Atomic Radius for Expanding Interplanar Spacing, Energy & Environmental Materials ( IF …
Learn MoreCombined with the results of XRD, we can easily analyze that the energy storage process of vanadium nitride had an important relationship with K + in the solution. During charge process (0 V to −1.2 …
Learn MoreNanostructured vanadium nitride/multiwalled carbon nanotubes (VN/CNTs) composites for pseudo-capacitor applications were obtained via the sol–gel synthesis of organic or inorganic vanadium oxide ...
Learn MoreVanadium-based cathodes for zinc-ion batteries (ZIBs) hold a great promise for next-generation energy storage systems due to their amazing diversity, relatively high capacity and excellent stability. Unfortunately, the specific capacity of current vanadium-based electrodes is intrinsically limited by zinc site density in crystal structures, probably …
Learn MoreThe use of energy storage equipment for energy storage and transfer has become an inevitable link in the development of sustainable energy [3], [4]. Supercapacitors have played an essential role in providing rapid energy storage and release, which have attracted wide attention due to their high power density, good safety, long cycle life, and …
Learn MoreAt the force of electric and weak acid conditions, the oxygen-doped vanadium nitride (O-VN) cathode was firstly electrochemically oxidized into vanadium …
Learn MoreMXenes are the class of two-dimensional transition metal carbides and nitrides that exhibit unique properties and are used in a multitude of applications such as biosensors, water purification, electromagnetic interference shielding, electrocatalysis, supercapacitors, and so forth. Carbide-based MXenes are being widely explored, …
Learn MoreThis work highlights the opportunity to use pseudocapacitive charge storage to overcome the limitations associated with sluggish sodium-ion diffusion and …
Learn MoreVanadium-based cathodes have received widespread attention in the field of aqueous zinc-ion batteries, presenting a promising prospect for stationary energy storage applications. However, the rapid capacity decay at low …
Learn MoreMoreover, first-principles calculations indicate that the doped N atoms in vanadium oxides generate a locally enhanced electric field, which accelerates the diffusion of Zn 2+. Given the above advantages, the p-NVO@C particles demonstrate an outstanding specific capacity of 501 mAh/g at a current density of 0.2 A/g and a remarkable rate …
Learn MoreThe energy storage mechanism of TMNs is based on their pseudocapacitive nature, which is attributed to the coaxial nanostructure and surface redox reaction of partially oxidized nitride [99]. Currently, research on various TMN structures is being conducted to study their supercapacitive characteristics.
Learn MoreDensity functional theory (DFT) calculations show that the Zn 2+ –vanadium nitride (VN) pairing offers excellent water dissociation activity, sitting at the …
Learn MoreVanadium nitride (VN) electrode displays high‐rate, pseudocapacitive responses in aqueous electrolytes, however, it remains largely unclear in nonaqueous, Na+‐based electrolytes. The traditional view supposes a conversion‐type mechanism for Na+ storage in VN anodes but does not explain the phenomena of their size‐dependent …
Learn MoreNanoparticulate transition metal nitride based supercapacitor electrodes have recently gained considerable attention as high capacity energy storage materials. In particular, vanadium nitride has been shown to be an excellent pseudocapacitor on account of surface reactions occurring at an oxide exo-shell. ...
Learn MoreUltra-small vanadium nitride quantum dots embedded in porous carbon (VNQDs/PC) were fabricated by a thermal treatment process of NH 4 VO 3 /C 3 H 6 N 6 under nitrogen atmosphere. The specific capacitance of VNQDs/PC was 1008 mF cm −2 at a current density of 0.004 A cm −2, whereas the VN/carbon hybrid material obtained by …
Learn MoreDOI: 10.1016/J.NANOEN.2019.03.003 Corpus ID: 107373076 Unveiling the pseudocapacitive charge storage mechanisms of nanostructured vanadium nitrides using in-situ analyses Vanadium nitride film made using …
Learn MoreThe final obtained hybrid composite of interconnected porous carbon@vanadium nitride consists of vanadium nitride nanoparticles on the surface of porous carbon. The electrode material prepared with the hybrid composite exhibits a high specific capacitance of 260 F g −1 at 0.5 A g −1 and a good rate capability with …
Learn MoreThe obtained vanadium nitride reaches a higher specific capacitance; and further, through ex situ X‐Ray diffraction and in situ Raman, the charge storage of …
Learn MoreUltra-small vanadium nitride quantum dots embedded in porous carbon as high performance electrode materials for capacitive energy storage J. Power Sources, 333 ( 2016 ), pp. 61 - 71 View PDF View article View in Scopus Google Scholar
Learn MoreThe vanadium nitride/graphene composite provides strong anchoring for polysulfides and fast polysulfide conversion. The anchoring effect of vanadium nitride is …
Learn MoreIn this review, we focus on vanadium nitride based anode materials and carefully summary their energy storage mechanisms, applications, advantages and disadvantages, and …
Learn MoreFurther, advances of metal nitride nanostructures in energy storage applications are briefly summarized. At last, after reviewing the literature individual perspectives are shared to explore these novel metal …
Learn MoreAs a promising anode material in supercapacitors, vanadium nitride has been widely concerned due to its ultra‑high theoretical specific capacitance. However, its routine test capacitance value is still far from the theoretical value and its energy storage mechanism is controversial. In order to solve these two key problems, here we prepare interplanar …
Learn Morevanadium nitride based anode materials and carefully summary their energy storage mechanisms, applications, advantages and disadvantages, and future development prospects. 1.
Learn MoreNanoparticulate transition metal nitride based supercapacitor electrodes have recently gained considerable attention as high capacity energy storage materials. In particular, vanadium nitride has been shown to be an excellent pseudocapacitor on account of surface reactions occurring at an oxide exo-shell.
Learn MoreVanadium Nitride (VN) is attractive for energy storage due to its high conductivity (1.6 × 10 6 S/m) and specific capacitance (1350 F/g) but limited to alkaline electrolytes for redox. In contrast, V 2 O 3 is redox active but not very conductive.
Learn MoreSeok and Sim et al. provide an overview of the current status and challenges involved in synthesis of 2D transition metal nitride MXenes. Formation energies, electrocatalysis potential, charge storage mechanisms, and future research directions for expansion of the MXene family and its novel properties are discussed.
Learn More1 INTRODUCTION Over the last few decades, tremendous efforts have been devoted to exploring advanced electrochemical energy conversion and storage systems due to the rapid exhaustion of fossil fuels and the deterioration of global warming. 1-3 Electrochemical energy conversion systems have been proven as one of the cleanest and most …
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