Search

Your search keyword '"Drews, Janina"' showing total 2 results
Start Over Author "Drews, Janina" Topic electric batteries
2 results on '"Drews, Janina"'

1. Modeling of Ion Agglomeration in Magnesium Electrolytes and its Impacts on Battery Performance.

Author

Drews, Janina, Danner, Timo, Jankowski, Piotr, Vegge, Tejs, García Lastra, Juan Maria, Liu, Runyu, Zhao‐Karger, Zhirong, Fichtner, Maximilian, and Latz, Arnulf

Subjects
MAGNESIUM ions, ELECTROLYTES, AGGLOMERATION (Materials), ION pairs, ELECTRODE reactions, COMPLEX ions, ELECTROLYTE solutions, ELECTRIC batteries
Abstract

The choice of electrolyte has a crucial influence on the performance of rechargeable magnesium batteries. In multivalent electrolytes an agglomeration of ions to pairs or bigger clusters may affect the transport in the electrolyte and the reaction at the electrodes. In this work the formation of clusters is included in a general model for magnesium batteries. In this model, the effect of cluster formation on transport, thermodynamics and kinetics is consistently taken into account. The model is used to analyze the effect of ion clustering in magnesium tetrakis(hexafluoroisopropyloxy)borate in dimethoxyethane as electrolyte. It becomes apparent that ion agglomeration is able to explain experimentally observed phenomena at high salt concentrations. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

2. Modeling of Ion Agglomeration in Magnesium Electrolytes and its Impacts on Battery Performance

Author

Drews, Janina, Danner, Timo, Jankowski, Piotr, Vegge, Tejs, Garc��a Lastra, Juan Maria, Liu, Runyu, Zhao���Karger, Zhirong, Fichtner, Maximilian, and Latz, Arnulf

Subjects
DDC 540 / Chemistry & allied sciences, Computational chemistry, Electrolytes, ion aggregation, Elektrolyt, Magnesium, 7. Clean energy, Electric batteries, Batterie
Abstract

Raised overpotential by clustering?! A new continuum model that considers ion aggregation is presented and applied to magnesium tetrakis(hexafluoroisopropyloxy)borate in dimethoxyethane as electrolyte. Thereby, the properties of ion clusters and their effects on the battery performance are analyzed. Simulations imply that cluster formation can be essential to explain the concentration-dependence of experimental data. The choice of electrolyte has a crucial influence on the performance of rechargeable magnesium batteries. In multivalent electrolytes an agglomeration of ions to pairs or bigger clusters may affect the transport in the electrolyte and the reaction at the electrodes. In this work the formation of clusters is included in a general model for magnesium batteries. In this model, the effect of cluster formation on transport, thermodynamics and kinetics is consistently taken into account. The model is used to analyze the effect of ion clustering in magnesium tetrakis(hexafluoroisopropyloxy)borate in dimethoxyethane as electrolyte. It becomes apparent that ion agglomeration is able to explain experimentally observed phenomena at high salt concentrations., publishedVersion

Catalog

Books, media, physical & digital resources
See catalog results