Coupled mechanical and electrochemical characterization method for battery materials

authored by

J. Schmitt, F. Treuer, Franz Dietrich, Klaus Dröder, T. P. Heins, Uwe Schröder, U. Westerhoff, M. Kurrat, Annika Raatz

Abstract

A battery separator isolates anode and cathode electrically and contributes to the ionic conductivity on the one side. On the other side, it is a highly sensitive functional component concerning mechanical loads. During production as well as the operation of a battery this thin, polymer based film is stressed by compressive and tensile forces. This contribution presents an enhanced characterization method for the separator/electrolyte system under defined mechanical load. The method is based on electrochemical impedance spectroscopy (EIS). The test bench design, functionality and the sample preparation as well as the characterization procedures are shown, before experimental results are discussed. The paper aims to contribute to the refinement of EIS data interpretation and determine critical states regarding mechanical pressure of the battery separator for both, production and operation.

Organisation(s)

Institute for Assembly Technology and Robotics

External Organisation(s)

Technische Universität Braunschweig

Type

Conference contribution

Pages

395-400

No. of pages

6

Publication date

25.11.2014

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/cencon.2014.6967536 (Access: Closed)