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Nanoconfined Electrochemical Interfaces
The research group "Nanoconfined Electrochemical Interfaces" deals with innovative electrode materials for electrochemical energy storage systems, which are based on ion intercalation.
The Fleischmann Lab focuses on the development of novel electrode materials for electrochemical energy storage devices based on the mechanism of ion intercalation. The goals are to overcome current limitations regarding fast-charging and lifetime as well as the focus on substituting critical raw materials by more abundant elements.
Intercalation batteries such as the lithium-ion battery are based on the electrochemical insertion/intercalation of lithium ions into the negative or positive electrode during charging or discharging, respectively. The rate of this process is usually limited by the solid-state diffusion of the ions through the layered crystal lattice of the electrode.
Our lab is developing strategies to overcome the diffusion limitations by synthesizing novel electrode materials by adapting the approach of interlayer-functionalization. For this purpose, organic molecules are inserted into the crystal structure to achieve an expansion and stabilization of the interlayer. This, in turn, can result in an accelerated ion transport.
To reveal the charge storage mechanisms in the interlayer-functionalized electrode materials, the lab is establishing advanced ex situ and operando characterization methods. These include cryogenic electron microscopy, X-ray absorption spectroscopy, electrochemical quartz-crystal microbalance, and electrochemical dilatometry.
Members
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Dr. Simon FleischmannPrincipal Investigator (PI)Tel: +49 (0731) 50 34213Mail: simon.fleischmann(at)kit.edu
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Research groupNanoconfined Electrochemical Interfaces
Research
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Equipment
Equipment in the Group:
- 200 kV transmission electron microscope (Talos F200i) with STEM, symmetric dual EDS detectors, EELS, single tilt cryo-holder with cryo-transfer and double tilt cryo-holder with vacuum-transfer
- Biologic potentiostats VMP300, VMP3, VMP3e, SP300 with more than 40 measurement channels for electrochemical experiments including impedance spectroscopy
- Argon-filled glovebox (MBraun)
- Electrochemical quartz crystal microbalance with temperature control (AWSensors X1 QCMD with TCU)
- Electrochemical dilatometer EL-CELL ECD-4-nano
Selected equipment accessible at HIU:
- Laboratory X-ray absorption fine structure (XAFS) and X-ray emission (XES) spectrometer, easyXAFS300+, easyXAFS
- Comprehensive setup for slurry mixing and electrode coating
- Thermogravimetric analysis (Netzsch) with mass spectroscopy
- X-ray diffractometer (D8 Advance, Bruker) with several in situ cells
- Crossbeam 340 field-emission electron microscope with focus ion beam, Zeiss
- Several tube and box furnaces with inert / air atmospheres
- Raman spectrometer inVia, Renishaw
- LAMBDA 465 UV/Vis Spectrophotometer, PerkinElmer
- Axio Zoom.V16 optical microscope, Zeiss
Collaboration
NanoconEC (2022-2025)
The DFG-funded project “NanoconEC” (project No. 513327636) aims to create a fundamental understanding of electrochemical charge storage processes at nanoconfined interfaces. Model layered host electrode materials will be employed to study the impact of nanoconfinement geometry on the electrochemical process of lithium ion intercalation. The goal is to observe and understand whether charge storage phenomena can deviate in nanoconfinement from the strict binary of either electric double-layer capacitance or Faradaic reaction.
InfinBAT (2021-2026)
The project “InfinBAT” (grant No. 03XP0423), funded by the German Federal Ministry of Education and Research (BMBF), was awarded to Simon as part of the NanoMatFutur competition as funding for a junior research group over a duration of five years. Within the project, interlayer-functionalized materials are developed as novel electrodes in high power intercalation batteries. Skeleton Technologies acts as a consulting partner.
Daimler und Benz Stiftung (2023-2024)
The project „Development of novel electrode materials for high-power sodium-ion batteries” investigates layered metal oxide materials as cathode materials for sodium ion batteries. The project is supported by the Daimler und Benz Foundation.
Publications
01.01.2024
Zeitschriftenaufsatz
Dinda Sirshendu, Braun Tobias, Pammer Frank D., Choi Jaehoon, Fleischmann Simon, Fichtner Maximilian
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01.01.2024
Zeitschriftenaufsatz
Guo Haocheng, Wu Sicheng, Chen Wen, Su Zhen, Wang Qing, Sharma Neeraj, Rong Chengli, Fleischmann Simon, Liu Zhaoping, Zhao Chuan
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01.01.2024
Zeitschriftenaufsatz
Guo Haocheng, Elmanzalawy Mennatalla, Sivakumar Prashanth, Fleischmann Simon
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01.02.2023
Zeitschriftenaufsatz
Shin Yuyoung, Stepien Dominik, Hepp Marco, Butz Benjamin, Bresser Dominic, Fleischmann Simon
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01.01.2023
Zeitschriftenaufsatz
Elmanzalawy Mennatalla, Innocenti Alessandro, Zarrabeitia Maider, Peter Nicolas J., Passerini Stefano, Augustyn Veronica, Fleischmann Simon
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01.03.2022
Zeitschriftenaufsatz
Fleischmann Simon, Zhang Yuan, Wang Xuepeng, Cummings Peter T., Wu Jianzhong, Simon Patrice, Gogotsi Yury, Presser Volker, Augustyn Veronica
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01.01.2018
Zeitschriftenaufsatz
Schiele A., Breitung B., Mazilkin A., Schweidler S., Janek J., Gumbel S., Fleischmann S., Burakowska-Meise E., Sommer H., Brezesinski T.
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01.01.2013
Poster
Fleischmann S., Bekaert E., Emmel U., Wietelmann U., Wohlfahrt-Mehrens M.
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Group Facts
Principal Investigator (PI)
Dr. Simon Fleischmann Nanoconfined Electrochemical Interfaces Tel: +49 (0731) 50 34213 Mail: simon.fleischmann(at)kit.edu
Dr. Simon Fleischmann Nanoconfined Electrochemical Interfaces Tel: +49 (0731) 50 34213 Mail: simon.fleischmann(at)kit.edu 
