Embedded Files
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Germany)
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Germany)
LAB and RESEARCH
LAB and RESEARCH
ELECTROCHEMISTRY LAB
This lab serves as a characterization lab for energy materials and includes several one-channel potentiostats from GAMRY and two MPG2 potentiostats from Biologic with 32 Channels. Furthermore a pycnometer for porosity characterization and different prototype setups for operando investigations can be found here.
POUCH CELL LAB
This state-of-the-art lab contains a complete assembly line capable of preparing and fabricating pouch cells, including lithium/sulfur, lithium/metal, sodium-ion, and the next generation of lithium-ion solid-state batteries.
RAMAN LAB
This lab includes a multimodal operando Setup which allows to perform three different spectroscopy techniques simultaneously while the electrochemical cell is charged and discharged. Besides Raman spectroscopy, UV/vis and impedance spectroscopy can be performed in parallel.
EXPERIMENTAL EQUIPMENT
EXPERIMENTAL EQUIPMENT
Battery cell configurations for operando and multimodal characterization
OPERANDO SET-UPS
Different configurations of battery cells, holders and potentiostat connections can be adapted. This includes coin-cells, operando cells for liquid or solid-state electrolytes, and pouch cells.
Characterization of electrode volume changes in pouch cells by operando Electrochemical Dilatometry
DILATOMETER
Dilatometry can achieve precision measurements of volume changes in electrodes, based on phase changes in their internal structure upon electrochemical processes. By adjustments in the applied force, battery “breathing” can be tracked in operando mode as electrode expansion or contraction.
PYCNOMETER
This pycnometer can measure the skeletal density of porous energy materials by using precise pressure measurements. Gases like helium, argon, nitrogen or carbon dioxide can be used for this purpose.
3D printer with different print materials
3D PRINTER
For sample environment preparation and construction of operando set-ups.
Cutting CO2-laser
VERSA LASER
For sample environment preparation. This laser can be used to cut almost all plastic materials that fit onto the 30 x 40 cm cutting table. This includes PMMA, polypropylene, separator material, silicon oxide, aluminum oxide, quartz glass, different rubbers etc.
PEOPLE
PEOPLE
Group Leader
Sebastian risse
Sebastian risse
Dr. Sebastian Risse is a physicist and has been leading a research group on electrochemistry at Helmholtz-Zentrum Berlin (HZB) since 2017. He received his Ph.D. from the University of Potsdam in 2013, and after a six-month stay abroad in New Zealand, he came to HZB to take up a postdoctoral position on Li/S batteries. Besides being deputy head of the department for "Electrochemical Energy Storage" and the joint research group "operando Battery Analysis", he coordinates the battery science case for the new synchrotron BESSY III. Mr. Risse is currently coordinating two BMBF projects (SkaLiS & FestPoLiS) and is also represented in consortia of other third-party-funded projects. Furthermore, he represents the Helmholtz-Zentrum Berlin (HZB) in the "Battery European Partnership Association" (BEPA). Besides his general reviewing activities for many different journals, he is a review editor in "Frontiers in Chemical Engineering" and was responsible for a special issue on the operando analysis of batteries in the journal "Batteries". Currently, Mr. Risse is working as a lecturer at the Humboldt University in Berlin (WG Adelhelm) as part of his habilitation. His main fields of interest in analytical methods are Electrochemical Impedance Spectroscopy, Raman, UV/vis spectroscopy, small angle scattering, reflectometry, and imaging.
Postdoctoral Researcher
rebeca fortes-martín
rebeca fortes-martín
Rebeca Fortes-Martín is a chemist at in the Institute of Electrochemical Energy Storage in the Helmholtz-Zentrum Berlin (HZB). After her Master studies at the Free University of Berlin and the PhD at the University of Potsdam, she started a postdoctoral position under the guidance of Dr. Sebastian Risse concerning operando characterization of batteries. Her research focus includes Electrochemical Impedance Spectroscopy in combination with other techniques like X-ray Absorption Spectroscopy for operando and multimodal characterization of batteries.
Page updated
Report abuse