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Pulsed Laser Ablation of Oxygen deficiency Enriched Superlattice Vanadium Pentoxide (V₂O₅) Ultrathin Nextrode aiming for Flexible Binder‐less Tandem Energy Harvesting Devices

Ramasamy Velmurugan, Antonysamy Soundarya Mary, Alagarsamy Pandikumar, Palanichamy Murugan, more

Small > 20 > 42 > n/a - n/a

For the initial instance, oxygen deficiency‐enriched vanadium pentoxide (O─V₂O₅@500) thin film electrodes are tuned by the Pulsed Laser Ablation technique. The O─V₂O₅@500 thin film electrode shows remarkable electrochemical performances confirming the greater potential window of −0.4 to 0.9 V versus Hg/HgO in an alkaline electrolyte; also, the O─V₂O₅@ 500 thin film electrode exhibits a noteworthy...

article

Impact of Ultrasound Treatment Duration on Dihydrate Precursor Implying the Sesquihydrate Route

Prakas Palanychamy, Leong Loong Kong, Gulnaziya Issabayeva

Chemical Engineering & Technology > 46 > 12 > 2608 - 2616

The present invention relates to a technique for synthesizing vanadium phosphorus oxide (VPO) catalyst employing an ultrasonic treatment approach while assessing phase composition and hydrocarbon oxidation activity to a conventionally synthesized catalyst. The ultrasonic treatment approach has been shown to produce a catalyst with improved surface constitution and accelerated hydrocarbon conversion...

article

Ionic Thermoelectric Properties of Reconstructed Lamellar Vanadium Pentoxide Membranes

Raktim Gogoi, Harshan Madeshwaran, Arnab Ghosh, Yoav Green, more

Advanced Functional Materials > 33 > 32 > n/a - n/a

In recent years, the application of ionic thermoelectric (TE) materials to convert low‐grade waste heat into electricity has become a subject of intense scientific research. However, most of the efforts are focused on organic polyelectrolytes or ionic‐liquids embedded in polymeric gels. Here, for the first time, it is demonstrated that nanofluidic membranes of reconstructed layered materials like...

article

A Heterogeneous Single Atom Cobalt Catalyst for Highly Efficient Acceptorless Dehydrogenative Coupling Reactions

Zhijun Li, Xiaowen Lu, Rufang Zhao, Siqi Ji, more

Small > 19 > 18 > n/a - n/a

A fundamental understanding of metal active sites in single‐atom catalysts (SACs) is important and challenging in the development of high‐performance catalyst systems. Here, a highly efficient and straightforward molten‐salt‐assisted approach is reported to create atomically dispersed cobalt atoms supported over vanadium pentoxide layered material, with each cobalt atom coordinated with four neighboring...

article

Life cycle assessment of an industrial‐scale vanadium flow battery

Nick Blume, Maik Becker, Thomas Turek, Christine Minke

Journal of Industrial Ecology > 26 > 5 > 1796 - 1808

In the course of the energy transition, storage technologies are required for the fluctuating and intermittently occurring electrical energy. The vanadium flow battery (VFB) is an especially promising electrochemical battery type for megawatt applications due to its unique characteristics. This work is intended as a benchmark for the evaluation of environmental impacts of a VFB, providing transparency...

article

Structural Investigations in Electrochromic Vanadium Pentoxide Thin Films

Cosmin Romanitan, Ioan Valentin Tudose, Kyriakos Mouratis, Marian Catalin Popescu, more

physica status solidi (a) > 219 > 16 > n/a - n/a

Herein, the correlation between the texture coefficient and the electrochromism in vanadium pentoxide nanostructured films with orthorhombic symmetry obtained by spray pyrolysis technique is reported. From a microstructural point of view, X‐ray diffraction depicts that the size of the crystalline domains, evaluated from both Scherrer equation and Rietveld refinement, depends on the texture coefficient,...

article

Interface‐Driven Thermoelectric Switching Performance of VO⁺‐Diffused Soda‐Lime Glass

Carmel Mary Esther Alphonse, Mohan Muralikrishna Garlapati, Bonnie J. Tyler, Heinrich F. Arlinghaus, more

physica status solidi (RRL) – Rapid Research Letters > 15 > 7 > n/a - n/a

Strongly confined NaVO⁺ segregation and its thermoresponsive functionality at the interface between simple sputter‐deposited amorphous vanadium oxide thin films and soda‐lime glass is substantiated in this work by in situ temperature‐controlled time‐of‐flight secondary‐ion mass spectrometry (ToF‐SIMS). The obtained ToF‐SIMS depth profiles provide unambiguous evidence for a reversible transformation...

article

Engineering Vanadium Pentoxide Cathode for the Zero‐Strain Cation Storage via a Scalable Intercalation‐Polymerization Approach

Zhiqiao Wang, Xiaoyu Tang, Song Yuan, Miao Bai, more

Advanced Functional Materials > 31 > 22 > n/a - n/a

The layered V₂O₅ cathode exhibits appealing features of multiple electron redox processes and versatile cation‐storage capacities. However, the huge volume respiration induces structural collapse and limits its commercial‐scale deployment. Herein, a scalable water‐bath strategy is developed to tailor the (001) spacing of the bulk V₂O₅ from the original 4.37 Å to its triple value (14.2 Å). The intercalated...

article

Analysis of a cascading power cycle without electric pumps for recovering waste heat from vanadium slag

Zixuan Wang, Bo Zhang, Liwei Wang, Shuai Du, more

International Journal of Energy Research > 45 > 6 > 9270 - 9283

In this article, a novel cascading power cycle (CPC) driven by waste heat in a wide temperature range is proposed for promoting the energy grade, heat source recovery rate and cycle performance, which is consisted of a pumpless absorption power cycle and a pumpless organic Rankine cycle, taking ammonia‐water and R245fa as working fluids, respectively. Based on an 800 t/d rotary kiln, the air of 300°C...

article

High electrochemical performance small grain size vanadium pentoxide prepared by hydrothermal method and as high proportion sulfur supported matrix materials for lithium‐sulfur batteries

Lan Li, Xinxi Wang, Yanyan Li, Xiaoshi Lang, more

International Journal of Energy Research > 45 > 2 > 3442 - 3451

In this paper, a type of small grain size vanadium pentoxide is prepared by a facile hydrothermal method. In different hydrothermal temperature conditions, X‐ray diffraction and Raman spectrum test results display that the vanadium pentoxide prepared at 140°C hydrothermal temperature has very high purity and stable layer structure. Scanning electron microscopy observes that this vanadium pentoxide...

article

Rationally Designed Vanadium Pentoxide as High Capacity Insertion Material for Mg‐Ion

Ayan Mukherjee, Sarah Taragin, Hagit Aviv, Ilana Perelshtein, more

Advanced Functional Materials > 30 > 38 > n/a - n/a

Owing to high energy density and economic viability, rechargeable Mg batteries are considered alternatives to lithium ion batteries. However besides the chevrel phase, none of the conventional inorganic cathode materials demonstrate reversible intercalation/deintercalation of Mg⁺² ions in an anhydrous electrolyte system. The lack of high voltage and high capacity cathode frustrates the realization...

article

Tuning the Kinetics of Zinc‐Ion Insertion/Extraction in V₂O₅ by In Situ Polyaniline Intercalation Enables Improved Aqueous Zinc‐Ion Storage Performance

Sucheng Liu, He Zhu, Binghao Zhang, Gen Li, more

Advanced Materials > 32 > 26 > n/a - n/a

Rechargeable zinc‐ion batteries (ZIBs) are emerging as a promising alternative for Li‐ion batteries. However, the developed cathodes suffer from sluggish Zn²⁺ diffusion kinetics, leading to poor rate capability and inadequate cycle life. Herein, an in situ polyaniline (PANI) intercalation strategy is developed to facilitate the Zn²⁺ (de)intercalation kinetics in V₂O₅. In this way, a remarkably enlarged...

article

Waste Slime of the V₂O₅ Production according to the Lime–Sulfuric Acid Technology as a Technical Raw Material for Vanadium Recovery

G. B. Sadykhov, K. V. Goncharov, T. V. Olyunina, D. Yu. Kashekov

Russian Metallurgy (Metally) > 2019 > 2019 > 9 > 873-882

Representative samples of the waste slime of the vanadium pentoxide V₂O₅ production from converter slags according to the lime–sulfuric acid technology are studied to develop its effective reclamation with vanadium recovery. The phase composition of the slime consists of gypsum, hematite, quartz, cristobalite, pseudo-brookite, complex ferrite, and various calcium-containing silicates. The residual...

article

Interface Engineering V₂O₅ Nanofibers for High‐Energy and Durable Supercapacitors

Wenchao Bi, Jichao Wang, Evan P. Jahrman, Gerald T. Seidler, more

Small > 15 > 31 > n/a - n/a

A local electric field is induced to engineer the interface of vanadium pentoxide nanofibers (V₂O₅‐NF) to manipulate the charge transport behavior and obtain high‐energy and durable supercapacitors. The interface of V₂O₅‐NF is modified with oxygen vacancies (Vö) in a one‐step polymerization process of polyaniline (PANI). In the charge storage process, the local electric field deriving from the lopsided...

article

Development of a Production Scheme for Utilizing Vanadium Pentoxide Hydrometallurgical Production Waste

U. A. Kologrieva, A. I. Volkov, A. S. Kirichenko, V. M. Ermolov, more

Metallurgist > 2019 > 63 > 3-4 > 403-408

A hydrometallurgical method is considered for treating the lime sediment of drainage water from hydrometallurgical production of vanadium pentoxide in order to obtain vanadium-manganese concentrate. Vanadium master alloys are smelted from the obtained concentrate.

article

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Harshavardhan Mohan, Dhanakumar Selvaraj, Shanthi Kuppusamy, Janaki Venkatachalam, more

Environmental Progress & Sustainable Energy > 38 > 4 > n/a - n/a

The increasing prevalence of antibiotics in the environment has promoted the development of antibiotic resistant microorganisms, and novel approaches are needed to effectively remove antibiotics from water and mitigate this worldwide problem. A reduced graphene oxide‐V₂O₅ (RGOV) nanocomposite was synthesized and used for photocatalytic degradation of the antibiotic oxytetracycline (OTC) in aqueous...

article

Preparation and sodium storage performance of V₂O₅·nH₂O/graphene composites

Jinhuan Yao, Tao Sun, Jingcheng Ji, Yinlu Sun, more

Ionics > 2019 > 25 > 12 > 5869-5879

V₂O₅·nH₂O/graphene composites have been fabricated via a facile sol–gel method followed with an annealing treatment in air. The influence of incorporation of graphene on the microstructure and sodium storage performance of V₂O₅·nH₂O were investigated. XRD, Raman, and TGA analyses validated that graphene was successfully incorporated in V₂O₅·nH₂O particles; XPS tests revealed that the incorporation...

article

Effect of Heating Rate of the Original ASD-4 Powder and the ASD-4 Powder Modified by the V₂O₅ Oxide on the Phase Composition of Oxidation Products

V. G. Shevchenko, D. A. Eselevich, Z. S. Vinokurov, A. V. Konyukova

Combustion, Explosion, and Shock Waves > 2019 > 55 > 3 > 289-294

X-ray diffraction with the help of synchrotron radiation is used to analyze a sequence of phase formation in the oxidation of original and modified Al powders in the case of heating in oxidizing gaseous media with rates of 10 and 100 K/min. It is established that an increase in the heating rate of the modified ASD-4 powder leads to an active growth of metastable phase (θ- and δ′-Al₂O₃) of aluminum...

article

Effect of Electrolyte on Performance of Electrochromic Films Including Plasma Modified V₂O₅ Composite

Esin Eren, Abdulkerim Yildiz, Gamze Celik Cogal, Songul Sen Gursoy, more

Journal of Inorganic and Organometallic Polymers and Materials > 2019 > 29 > 6 > 2237-2251

Vanadium pentoxide (V₂O₅) electrochromic material was modified by furan plasma polymerization method and electrochromic properties of the new V₂O₅/Polyfuran (PFu) composite material were examined in three different electrolytes (lithium perchlorate (LiClO₄), lithium trifluoromethanesulfonate (LiTRIF), sodium perchlorate (NaClO₄), which influence significantly their electrochemical and electrochromic...

article

Impedance Spectroscopy of Vanadium Pentoxide Thin Films

Krystyna Schneider, Malgorzata Dziubaniuk, Jan Wyrwa

Journal of Electronic Materials > 2019 > 48 > 6 > 4085-4091

V₂O₅ thin films have been deposited onto an insulating support by radiofrequency (rf) reactive sputtering from a metallic vanadium target at controlled flow rates of argon–oxygen gas mixture. Glancing-incidence x-ray diffraction (GIXD) analysis and scanning electron microscopy (SEM) were used for structural and phase characterization of the obtained materials. The as-sputtered thin films were found...

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Search results

Pulsed Laser Ablation of Oxygen deficiency Enriched Superlattice Vanadium Pentoxide (V₂O₅) Ultrathin Nextrode aiming for Flexible Binder‐less Tandem Energy Harvesting Devices

Impact of Ultrasound Treatment Duration on Dihydrate Precursor Implying the Sesquihydrate Route

Ionic Thermoelectric Properties of Reconstructed Lamellar Vanadium Pentoxide Membranes

A Heterogeneous Single Atom Cobalt Catalyst for Highly Efficient Acceptorless Dehydrogenative Coupling Reactions

Life cycle assessment of an industrial‐scale vanadium flow battery

Structural Investigations in Electrochromic Vanadium Pentoxide Thin Films

Interface‐Driven Thermoelectric Switching Performance of VO⁺‐Diffused Soda‐Lime Glass

Engineering Vanadium Pentoxide Cathode for the Zero‐Strain Cation Storage via a Scalable Intercalation‐Polymerization Approach

Analysis of a cascading power cycle without electric pumps for recovering waste heat from vanadium slag

High electrochemical performance small grain size vanadium pentoxide prepared by hydrothermal method and as high proportion sulfur supported matrix materials for lithium‐sulfur batteries

Rationally Designed Vanadium Pentoxide as High Capacity Insertion Material for Mg‐Ion

Tuning the Kinetics of Zinc‐Ion Insertion/Extraction in V₂O₅ by In Situ Polyaniline Intercalation Enables Improved Aqueous Zinc‐Ion Storage Performance

Waste Slime of the V₂O₅ Production according to the Lime–Sulfuric Acid Technology as a Technical Raw Material for Vanadium Recovery

Interface Engineering V₂O₅ Nanofibers for High‐Energy and Durable Supercapacitors

Development of a Production Scheme for Utilizing Vanadium Pentoxide Hydrometallurgical Production Waste

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Preparation and sodium storage performance of V₂O₅·nH₂O/graphene composites

Effect of Heating Rate of the Original ASD-4 Powder and the ASD-4 Powder Modified by the V₂O₅ Oxide on the Phase Composition of Oxidation Products

Effect of Electrolyte on Performance of Electrochromic Films Including Plasma Modified V₂O₅ Composite

Impedance Spectroscopy of Vanadium Pentoxide Thin Films

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