All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Study of the Corrosion Behavior of LiFSI Based Electrolyte for Li-Ion Cells

Author(s): Steve Michael

In coin and pouch cell setups, the corrosion/passivation phenomenon of Al and stainless steel with 1.25 M LiFSI in ethylene carbonate / ethyl methyl carbonate 30/70 wt percent electrolyte was investigated. The LiFSI electrolyte may passivate Al foil in the usual cell operation voltage window of 2.8 to 4.3 V, according to the results. In a cyclic voltammetry test, however, no passivation behaviour was found for stainless steel with an ever-increasing current response. Corrosion is a term that refers to the process of corrosion. Fe/Cr ions were discovered on the anode side, which accelerated the electrolyte degradation mechanism. In a 1.5 Ah pouch cell, the LiFSI electrolyte was put to the test for long-term cycling and quick charging. After 1000 cycles, capacity retention was 88.5 percent at 1C and 80 percent for extreme rapid charging rates, demonstrating the applicability of LiFSI in Li-ion cells without stainless steel components
Share this