Discover and verify aging products and mechanisms of litium-ion battery (LiB)

Qualitative and quantitative evaluation of electrolyte aging, verification of recycling methods, toxicological testing

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Discover and verify aging products and mechanisms of litium-ion battery (LiB)

Münster Electrochemical Energy Technology (MEET) at the University of Münster

  • INDUSTRY

    Lithium-ion Batteries, Electronics

  • KEYWORD

    litium-ion battery, LiB, aging, recycling

  • INTRODUCTION SERVICE&PRODUCTS

    GCMS-QP2020 NX

Munster

 

We interviewed Dr. Sascha Nowak, the head of the division Analytics & Environment of the MEET battery research center in Münster. Münster Electrochemical Energy Technology (MEET) at the University of Münster is one of the foremost battery research center in Germany.

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Dr. Sascha Nowak

Dr. Sascha Nowak

The head of the division Analytics & Environment of the MEET battery research center in Münster

*Affiliates and titles of the interviewee are current as of the time of reporting.

Münster Electrochemical Energy Technology (MEET) at the University of Münster
URL https://www.uni-muenster.de/MEET/en/institute/index.html

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Could you outline the research and let us know what discovery and achievement have been made so far?

We focus on (electrolyte) aging, transition metal migration and surface investigations, recycling and 2nd life as well as toxicological aspects with regard to working safety. With many newly developed methods, we could discover and verify aging products and mechanisms. Furthermore, all applied methods were transferred to the recycling of lithium-ion batteries to ensure the identification of the recycling components and quality control during the recycling processes.

Could you introduce the research that has been particularly successful among your many advanced researches?

The competence field electrolyte aging characterizes electrolytes in their various states of operation. Aging effects are observed in terms of qualitative and quantitative investigation using different analytical methods. This also includes the synthesis of substances as standards that are not commercially available. In addition, recycling methods like extracting the electrolytes from cells are analytically developed and validated. Supercritical gases with and without the addition of solvents are being tested for the extraction of electrolyte components from spend batteries. The extraction is carried out either in an autoclave or in commercially available extraction units. To characterize the electrolyte, a wide variety of methods that focus on identification and quantification of the different degradation compounds are used. Reaction schemes are concluded from these measurements that provide a deeper understanding of the manifold processes taking place inside a battery. read more

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