Franziska Klein

Franziska Klein
Helmholtz-Institut Ulm | KIT-HIU · Materials Research Area

PhD

About

13
Publications
5,898
Reads
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656
Citations
Citations since 2016
8 Research Items
578 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Additional affiliations
April 2017 - present
Helmholtz-Institut Ulm
Position
  • PostDoc Position
May 2012 - December 2016
Justus-Liebig-Universität Gießen
Position
  • PhD Student

Publications

Publications (13)
Article
Full-text available
Lithium-rich transition metal disordered rock salt (DRS) oxyfluorides have the potential to lessen one large bottleneck for lithium ion batteries by improving the cathode capacity. However, irreversible reactions at the electrode/electrolyte interface have so far lead to fast capacity during electrochemical cycling. Here, we report the synthesis of...
Article
Full-text available
Recently, the ternary spinel chalcogenide MgSc2Se4 was proposed to be a promising solid‐state electrolyte in rechargeable Mg batteries. In order to test the properties of the material, we use a modified solid‐state reaction to synthesize pure MgSc2Se4. Electrochemical characterizations identify detrimental high electronic conductivities, which limi...
Article
A rigid crystal lattice, where cations occupy specific positions in the lattice, is generally regarded a critical requirement to enable Li+ diffusion in the bulk of conventional cathode materials, while disorder is generally considered as detrimental. Herein, we demonstrate that facile and reversible insertion and extraction of Li+ is possible with...
Data
Experimental file of "Electrochemical performance of CuNCN for sodium ion batteries and comparison with ZnNCN and lithium ion batteries"
Article
Full-text available
Transition metal carbodiimides (TMNCN) undergo conversion reactions during electrochemical cycling in lithium and sodium ion batteries. Micron sized copper and zinc carbodiimide powders have been prepared as single phase as confirmed by PXRD and IR and their thermal stability has been studied in air and nitrogen atmosphere. CuNCN decomposes at ∼250...
Article
Copper oxide (CuO) can be used as electrode material for lithium-ion and sodium-ion bat-teries, however, the way toward application for rechargeable systems is still long. This is mainly related to the complex nature of the electrode reaction and to ageing mechanisms that are not well understood, especially in case of sodium. Main subject of this p...
Article
Research on sodium-ion batteries (NIBs) is well motivated by the large abundance of sodium and strategies for commercializing such systems are mainly based on principles known from lithium-ion technology. From a scientific perspective it is an intriguing questions of how lithium and sodium compare in their redox chemistry with identical electrodes....
Article
Charge storage based on conversion reactions is a promising concept to store electrical energy. Many studies have been devoted to conversion reactions with lithium; however, still many scientific questions remain due to the complexity of the reaction mechanism combined with surface film formation. Replacing lithium by sodium is an attractive approa...
Article
The title compound is synthesized by solid state reaction of a stoichiometric mixture of the elements (quartz tube, 1123 K, 5 d).
Article
Full-text available
Iron vanadium sulfide (FeV2S4) was synthesized via high temperature solid state reaction and was investigated as a cheap anode material for Na and Li ion batteries. Discharge capacities as high as 723 mAhg-1 (Na) and 890 mAhg-1 (Li) were found for half-cell measurements at room temperature. The capacity of the Na-FeV2S4 system remained constant at...
Article
Full-text available
Research on sodium-ion batteries has recently been rediscovered and is currently mainly focused on finding suitable electrode materials that enable cell reactions of high energy densities combined with low cost. Naturally, an assessment of potential electrode materials requires a rational comparison with the analogue reaction in lithium-ion batteri...

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