Listar Property Management
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You are in good hands with us. We provide owners and realtors with the services they need to rent out their apartments to high-end clients, and renters with the services they need to enjoy their stay here in Manta, Ecuador.
Listar Property Management
Are you an owner or investor looking to rent out your property in Ecuador? If so, you’ve come to the right place. Our methods are completely transparent and clear. We treat your property like it’s ours and help you find tenants looking for luxury oceanfront condos or homes for short and long term rentals using internet marketing, word of mouth, social media and a strategic advertising campaign. We also help you list your property using best practices in photography, video and advanced marketing.
Leased House 12 Yukon Street, Truganina Vic 3029
Are you a tourist who has just discovered the beautiful beach town of Manta, Ecuador and would like to visit for a while? Are you a business person commuting to Mantua looking for comfortable accommodation? Are you looking for a long or short term rental of a fully furnished oceanfront property? Will you need concierge services during your stay? Look no further, because Rent In Manta has exactly what you need! We provide access to fair, honest and transparent owners and realtors who only want to help you find the property that best suits your needs at the most affordable prices. The main problem on the way to the practical application of lithium-sulfur (Li-S) batteries is lithium polysulfide (LiPS), which is caused by the rapid migration of LiPS in the electrolyte and the slow kinetics of the reaction. Single-atom catalyst (SAC) materials hold promise for strong binding of LiPS to the cathode and improved reaction kinetics in Li–S batteries. In this study, we examine the electrocatalytic properties of four TM–N4–C (TM = Co, Fe, V, and W) SAC materials from simulations based on density functional theory. We first investigate a W-based SAC as a Li–S cathode host and calculate the adsorption energies of five LiPS intermediates (Li2S
= 1, 2, 4, 6 and 8). We investigate the mechanism of Li2S2 to Li2S conversion and present energy profiles based on the Gibbs free energy for the LiPS reaction pathway from S8 to Li2S. V and W-based SACs provide high LiPS binding, up to 6.0 times that of pristine graphene, and significantly improve reaction kinetics by lowering the S-dissociation barrier of Li2S2 decomposition by about 2.5 times compared to pristine graphene . Our work provides a detailed study of LiPS adsorption and conversion on SAC cathode assemblies, highlighting their potential to improve the electrochemical performance of Li-S batteries and mitigate the LiPS shuttle effect.
Placing molecules in nanocontainers can be a powerful tool for controlling the state of guest molecules, tuning the properties of host nanocontainers, and inducing synergistic properties in host–guest systems. Among nanocontainers, single-walled carbon nanotubes—atomically thin cylinders of carbon with typical diameters of less than 2 nm and lengths that reach macroscopic dimensions—are ideal hosts for a variety of materials, including inorganic crystals and organic, inorganic, and organometallic molecules. The extremely high aspect ratio of carbon nanotubes is complemented by their functional properties, such as exceptionally high electrical conductivity and thermal, chemical, and electrochemical stability, making carbon nanotubes ideal connectors between guest molecules and macroscopic electrodes. The idea of using nanotubes as both nanocontainers and nanoelectrodes has led to the inclusion of redox species residing in the nanotube cavities, where the host nanotubes can serve as electron conductors to/from guest molecules while constraining the molecular positions, orientations, and local environment around the redox- recovery centers. This review provides a state-of-the-art overview of molecular redox chemistry in ultra-narrow carbon nanotubes (nanotubes with diameters approaching the molecular size), highlighting opportunities, pitfalls, and gaps in the understanding of electrochemistry in confinement, including the role of nanotube diameter, size, and molecular shape -guests, type of electrolyte, solvent and other experimental conditions.
We review the most important types of structural complexity in Prussian blue analogues, their implications for material performance, and how they can be controlled by judicious choice of composition. We focus on six specific aspects: octahedral tilts, A-site “slip”, Jahn-Teller distortions, A-site species and occupancy, hexation metalate vacancies, and framework hydration. The promising K-ion cathode material KxMn[Fe(CN)6]y serves as a recurring example that illustrates many of these different types of complexity. Our paper concludes with a discussion of how the interplay of different distortion mechanisms can be used to optimize the performance of this and other related systems to aid in the development of next-generation PBA materials.
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Magnesium (Mg) batteries have potential beyond lithium-ion technology, but currently suffer from poor cycle performance, in part due to the interphase formed when magnesium electrodes react with electrolytes. The use of magnesium bis(trifluoromethanesulfonyl)imide (Mg(TFSI)2) electrolytes would allow high-voltage intercalation cathodes, but many reports report poor magnesium coverage/removal in the electrolyte solution due to the passive interphase. Here, we evaluated the Mg coating/stripping mechanism on bulk Mg electrodes in Mg(TFSI)2-based electrolyte using cyclic voltammetry,
Fourier transform infrared spectroscopy and electron microscopy and compared it to a Grignard-based electrolyte cycle. Our studies indicate an atypical cycling mechanism on Mg surfaces in Mg(TFSI)2-based electrolytes, which occurs via Mg deposits rather than the bulk electrode. Fourier transform infrared spectroscopy demonstrates the evolution in interfacial chemistry during conditioning (repeated cycles) and that this is an important step for stable cycling in Mg(TFSI)2-tetraglyme (4G) electrolyte. A fully conditioned electrode in Mg(TFSI)2-4G is able to cycle with an overvoltage of <0.25 V without additional additives such as Cl– or BH4–.
Bulk sulfur containing 3 wt% gold nanopowder is being investigated as a possible candidate for maximizing the active material fraction in the Li-S battery cathode. The material is made by simply mixing gold with molten sulfur at 120°C, quenching at room temperature and grinding. Our comprehensive study reports relevant electrochemical data, advanced X-ray computed tomography (CT) imaging of the positive and negative electrodes, and thorough structural and morphological characterization of S:Au 97:3
Composite. This cathode exhibits a high rate in the C/10 to 1C range, a maximum capacity above 1300 mAh gS−1, and a capacity retention of 85% to 91% after 100 cycles at 1C and C/3 rates. The new formulation provides a sulfur content in the composite cathode film of up to 78% by mass, an active material loading of 5.7 mg/cm2 and an electrolyte/sulfur (E/S) ratio of 5 μL mg−1, resulting in a maximum area of 5.4mAhcm−2. Micro- and nanoscale X-ray CT reveals features of the positive electrode microstructure that contribute to fast conversion kinetics in the battery. Quantitative analysis of the sulfur distribution in the porous cathode shows that electrodeposition during the initial cycle can trigger an activation process in the cell, leading to improved performance. In addition, the tomographic study shows the characteristics of the lithium anode and cell separator after a galvanostatic test lasting more than 300 cycles at 2C.
Publications — Listar
Jude Maggiosson, James Robinson, Rhodri Owen, Maximilian Mayer, Anand Radhakrishnan, Martin Pham, Thomas Trenter, Yeshui Zhang, Paul Shearing, Dan Brett
Over the past decade, acoustic techniques, including acoustic emission (AE) and ultrasonic testing (UT), have been increasingly used for process diagnostics and condition monitoring of electrochemical power devices, including batteries, fuel cells, and water electrolyzers. These techniques are non-invasive, highly sensitive and inexpensive, providing a high level of spatial and temporal resolution and practicality. Their application in electrochemical devices is based on the detection of changes in acoustic signals emitted from or propagated through materials as a result of physical, structural, and electrochemical changes in the material. These changes in audio signals are then correlated with critical processes and the health status of these devices. This review summarizes progress in the use of acoustic techniques for process and performance monitoring of basic electrochemical energy conversion and storage devices. First, the basic principles of AE and UT are introduced, and then the application of these acoustic techniques to electrochemical power devices is discussed. Conclusions and perspectives on some key issues and potential commercial and academic applications of the devices are highlighted. With further development, acoustic techniques are expected to become a key part of the suite of diagnostic techniques commonly used to monitor electrochemical devices in a variety of processes, including fabrication, post-mortem, and recycling decision support, to aid the deployment of these devices in increasingly demanding applications.
Electrochemical impedance spectroscopy (EIS) is widely used to investigate physical and chemical processes in lithium-ion batteries (LiB). Key parameters include state of charge, capacity rate or power decay, degradation and temperature dependence, which are needed to inform battery management systems, as well as for quality assurance and control. All-solid-state batteries using solid-state electrolyte (SE) promise higher energy density via a lithium metal anode as well as improved safety, but their development is at an early stage, and EIS measurement, cell setup, and modeling approach can be very different
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