Coupled mechanical and electrochemical characterization method for battery materials

verfasst von

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.

Organisationseinheit(en)

Institut für Montagetechnik und Industrierobotik

Externe Organisation(en)

Technische Universität Braunschweig

Typ

Aufsatz in Konferenzband

Seiten

395-400

Anzahl der Seiten

6

Publikationsdatum

25.11.2014

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Energieanlagenbau und Kraftwerkstechnik, Erneuerbare Energien, Nachhaltigkeit und Umwelt

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1109/cencon.2014.6967536 (Zugang: Geschlossen)