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Institute of Energy and Climate Research

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Electrochemical Storage

The department focuses mainly on the development of lithium- and sodium solid state batteries as novel, improved types of batteries for stationary and mobile applications. Our research covers the full chain of the battery development, starting from the fundamentals of materials chemistry towards the battery components and complete cells.

In combining knowledge and know-how on materials and components development, which includes synthesis, thin film technologies and ceramic processing, we aim for bringing forward solid state batteries with high energy and power density.

Electrochemical StorageResearch focus of the Electrochemical Energy Storage Department

Advantages of solid state batteries

In solid state batteries, the liquid electrolyte that is usually used in conventional batteries is replaced by an ion conducting solid. Since the electrodes and other components of a battery are usually also solid, these batteries are called "solid state batteries". Solid state batteries offer many advantages: They cannot leak, are generally less toxic, and in case of failure, the components generally cannot burn or explode. Most importantly, solid electrolytes allow the use of electrode materials with voltages in excess of 5 volts because of their wider electrochemical window as well as the use of lithium metal as anode because of their chemical compatibility with lithium. All of these advantages mean an increase in energy density while maintaining the inherent safety of the battery.

Electrochemical StorageSolid electrolyte ceramic

Electrochemical StorageSolid electrolyte ceramic

Materials science expertise and worldwide collaborations

Our efforts in materials science focus on metallic anode and ceramic electrolyte and cathode materials, in particular oxide ceramics with electronic or ionic conductivity. Research and development of ceramic battery components at IEK-1 benefits from a long-standing expertise in ceramic processing and thin film technologies (see epertise). Additionally, numerous imaging and physical techniques are available for the characterization of materials and components. The knowledge chain is completed by collaborating with other institutes in order to implement electrochemical methods for measuring cells, modules, and hybrid systems under laboratory and application-relevant conditions as well as in real operation (see projects).

Electrochemical StorageGloveboxsystem with connected PVD system

Electrochemical StorageRaman microscope with in-situ battery testing cell

Recent publications

See Publications

Projects: Electrochemical Storage

EVABATT, Evaluierung fortschrittlicher Festkörperbatteriekonzepte mit hoher Sicherheit und Leistung, (JLU Gießen, Fraunhofer ICT, TU München, IEK-1 & National Cheng Kong University, Feng Chia University, National Universty of Tainan, Industrial Technology Research Institute of Taiwan, National Applied Research Laboratories) November 2017 – Oktober 2020

GrEEn, Grüne Elektrochemische Energiespeicher (RWTH Aachen, WWU Münster, IEK-1, IEK-9), September 2017 – August 2020

INDICATE, In-situ Analysis of Li-Distribution in Cathodes, (WWU Münster, IEK-1), September 2017 – August 2019

LISZUBA, Lithium-Schwefel-Feststoffbatterien als Zukunftsbatterie (JLU Gießen, TU Braunschweig, TU Berlin, IEK-1), Juli 2017 – Juni 2020

BCT, Battery Cell Technology (ContiTech Elastomer-Beschichtungen GmbH, Henkel Electronic Materials N.V., Saueressig GmbH + Co. KG, Adphos Group, FhG-IPA, Uni Stuttgart, IEK-1, WWU Münster, TU Braunschweig), Juli 2017 – Juni 2019

MEET Hi-EnD II, Materials and Components to Meet High Energy Density Batteries (RWTH Aachen, WWU Münster, IEK-1, IEK-2, IEK-9 und IEK-12), Oktober 2016 -September 2019

FELIZIA, Festelektrolyte als Enabler für Lithium-Zellen in Automobilen Anwendungen (BMW AG, BASF SE, IEK-1, IEK-12, TU München, Justus Liebig-Universität Gießen, KIT, Schott AG, VW AG), Januar 2016 – Dezember 2018

BenchBatt, Benchmarking und Validierung der Leistungsfähigkeit und Kosten von Hochenergie- und Hochvolt-Lithium-Ionen Batterien im Vergleich zu Post-Lithium-Ionen Technologien (WWU Münster, IEK-1, IEK-12, TU Braunschweig, Justus Liebig Universität Gießen), Januar 2016 – Dezember 2018

DESIREE, Defect spinels as high-energy and high-performance materials for electrochemical energy storage (IEK-1, IEK-9, RWTH, KIT), September 2014–August 2018