A5047025695- Oceanographic and Atmospheric Processes
- X-ray Diffraction in Crystallography
- Nuclear Physics and Applications
- Crystallization and Solubility Studies
- Metallurgical Processes and Thermodynamics
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Molten salt chemistry and electrochemical processes
- Advanced Battery Materials and Technologies
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Thermal Expansion and Ionic Conductivity
- Aluminum Alloys Composites Properties
- Advancements in Battery Materials
- Advanced battery technologies research
- Aluminum Alloy Microstructure Properties
- Magnetic properties of thin films
- Arctic and Antarctic ice dynamics
- Induction Heating and Inverter Technology
- Fluid Dynamics and Turbulent Flows
- Extraction and Separation Processes
- Fusion materials and technologies
- Climate variability and models
- Nuclear Materials and Properties
- Solar and Space Plasma Dynamics
Helmholtz-Zentrum Dresden-Rossendorf
2015-2025
Indian Institute of Technology Madras
1973-2023
University of Latvia
2015-2016
National Institute of Oceanography
2000-2011
Council of Scientific and Industrial Research
1994-2011
Indian Institute of Technology Indore
1973-2007
Institute of Minerals and Materials Technology
1992-1998
National Institute for Interdisciplinary Science and Technology
1992-1998
Advanced Materials and Processes Research Institute
1994
This paper presents the cycling of a novel low-cost Na-Zn liquid metal battery. Its 600 °C operating temperature multiple challenges that must be overcome to achieve commercial viability, both from structural and electrochemical perspective. To enable long-term battery in realistic environment, we have developed reusable, hermetically sealed, high sufficiently corrosion resistant cell concept. The design as well various approaches for assembling filling are presented. factors considered when...
In the field of electrical energy storage, liquid metal batteries (LMBs) are a promising technology. A newly invented cell concept based on sodium and zinc is currently being developed. Solutal convection understood to be highly significant flow phenomenon in those cells, causing substantial effects mass transfer-induced self-discharge. The latter great challenge for Na–Zn cells. diaphragm has often been proposed as mitigation measure, but its mode action efficacy have not reported yet, this...
<ns3:p>Background Na-Zn liquid metal batteries, which operate at 600 °C, have recently been proposed as inexpensive stationary energy storage devices. As with any other electrochemical cell, their fabrication and operation involves certain risks, need to be well understood in order minimised. Methods A risk assessment according ISO 12100 is performed the cell level for operating cells laboratory environment. Hazard identification evaluation are systematically addressed, including a thorough...
Liquid metal batteries (LMBs) are a promising candidate for large-scale stationary storage of renewably generated energy. Their Earth-abundant electrode materials and highly conductive molten salt electrolytes confer the low costs high power densities required grid-scale storage. LMB operation involves complex interplay between mass transport mechanisms, as result their performance potential operational limits not fully understood. In this study, multiphase numerical model is presented that...
Intraseasonal variability in meridional current the eastern equatorial Indian Ocean is investigated by use of results from a high‐resolution ocean general circulation model. Both simulated and observed demonstrate energy peaks two distinct time‐scales; one biweekly (6–8 d) period above thermocline other lower frequency band (20–70 within subsurface layer. In addition, intraseasonal can be seen even deep at 2000 m 4000 depths. Composite analysis field demonstrates that horizontal structure...
Liquid metal batteries have been introduced as promising option to address the needs for new energy storage technologies. Currently, based on sodium and zinc are under development a favorable due their high theoretical cell potential, readily abundant materials, cost-advantages. Nevertheless, they face problem of self-discharge, which makes it inevitable understand fluid dynamics in whole cell. Motivated by that, several types mechanic instabilities Na-Zn liquid identified discussed here. On...
This paper presents the analysis of first dynamic neutron radiography experiment that visualized motion solid particles in liquid metal, which was stirred by a system four counter-rotating magnets. The also contains quantitative results derived from images: distribution particle concentration, number admixed and velocities as functions magnet rotation speed.
[1] Analysis of long time series current meter data from a mooring at 77°E and the equator during 2003–2007, along with mean sea level anomaly data, throws light on occurrence lower-frequency (24 to 40 day) Yanai waves in upper water column central equatorial Indian Ocean (EIO) positive dipole (IOD) years 2003, 2004, 2006, 2007 its absence negative IOD year 2005. This result is contrast earlier studies that observed only higher-frequency (biweekly period) wave this region. We propose new...
Electrochemical cells employing Sodium (Na) and Zinc (Zn) electrodes a chloride salt electrolyte have been imaged by neutron radiography during cycling. The use of such abundant raw materials confers very low energy-normalised cost to the Na-Zn system, but its operation requires them be entirely molten, therefore operated at 600 {\deg}C. To suppress self-discharge that results from this all-molten configuration, porous ceramic diaphragms are used partition thereby impede movement Zn2+ ions...
Abstract Multiple configurations of synchronously rotating permanent magnet cylinders magnetized across the axes are proposed for liquid metal stirring homogenization as well pumping. Universal analytical model is used an initial parameter analysis. Then experimental setups were built to perform physical modelling industrial applications, e.g. large-scale metallurgical furnaces. Velocity distribution in was measured using different methods: Ultrasound Doppler anemometry and potential...
A new technique for retrieval of sea surface salinity (SSS) from space‐borne satellite measurements Outgoing Longwave Radiation (OLR) through the ‘Effective Oceanic Layer (EOL)’ is explained in this paper. The OLR used to study convection over land and ocean. This based on idea that intense ocean associated with warmer temperatures maintained by low salinities formed due large riverine input compounded convection‐induced precipitation. augments situ SSS measurements. preliminary assessment...
Dispersion of particles to produce metal matrix nanocomposites (MMNC) can be achieved by means ultrasonic vibration the melt using ultrasound transducers. However, a direct transfer this method steel composites is not feasible because much higher working temperature. Therefore, an inductive technology for contactless treatment acoustic cavitation was developed. This report describes samples produced assess feasibility proposed nano-particle separation in steel. Stainless with inclusions...
Batteries with liquid metal electrodes are attractive candidates for sustainable energy‐storage applications due to low manufacturing cost and high recyclability. These batteries should be developed lower operating temperature, higher cell voltage, membrane‐free configuration. Herein, a new type of relying on alkali metals iodide is demonstrated. As proof‐of‐concept study, metal‐iodide (A‐AI) constructed by facile assembly introducing current collectors, LiI–LiCl–KI–CsI salt mixture, an...